diff --git a/beacon-chain/rpc/eth/shared/BUILD.bazel b/beacon-chain/rpc/eth/shared/BUILD.bazel
index 4642f04b26a9..19f1180f52ec 100644
--- a/beacon-chain/rpc/eth/shared/BUILD.bazel
+++ b/beacon-chain/rpc/eth/shared/BUILD.bazel
@@ -40,7 +40,10 @@ go_library(
 
 go_test(
     name = "go_default_test",
-    srcs = ["errors_test.go"],
+    srcs = [
+        "errors_test.go",
+        "request_test.go",
+    ],
     embed = [":go_default_library"],
     deps = [
         "//beacon-chain/rpc/lookup:go_default_library",
diff --git a/beacon-chain/rpc/eth/shared/request.go b/beacon-chain/rpc/eth/shared/request.go
index 3a925b407c80..45386e4e0306 100644
--- a/beacon-chain/rpc/eth/shared/request.go
+++ b/beacon-chain/rpc/eth/shared/request.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"net/http"
 	"strconv"
+	"strings"
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/gorilla/mux"
@@ -15,15 +16,15 @@ import (
 )
 
 func UintFromQuery(w http.ResponseWriter, r *http.Request, name string, required bool) (string, uint64, bool) {
-	raw := r.URL.Query().Get(name)
-	if raw == "" && !required {
+	trimmed := strings.ReplaceAll(r.URL.Query().Get(name), " ", "")
+	if trimmed == "" && !required {
 		return "", 0, true
 	}
-	v, valid := ValidateUint(w, name, raw)
+	v, valid := ValidateUint(w, name, trimmed)
 	if !valid {
 		return "", 0, false
 	}
-	return raw, v, true
+	return trimmed, v, true
 }
 
 func UintFromRoute(w http.ResponseWriter, r *http.Request, name string) (string, uint64, bool) {
diff --git a/beacon-chain/rpc/eth/shared/request_test.go b/beacon-chain/rpc/eth/shared/request_test.go
new file mode 100644
index 000000000000..3937a8b7b52f
--- /dev/null
+++ b/beacon-chain/rpc/eth/shared/request_test.go
@@ -0,0 +1,96 @@
+package shared
+
+import (
+	"math"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestUintFromQuery_BuilderBoostFactor(t *testing.T) {
+	type args struct {
+		raw string
+	}
+	tests := []struct {
+		name      string
+		args      args
+		wantRaw   string
+		wantValue uint64
+		wantOK    bool
+	}{
+		{
+			name: "builder boost factor of 0 returns 0",
+			args: args{
+				raw: "0",
+			},
+			wantRaw:   "0",
+			wantValue: 0,
+			wantOK:    true,
+		},
+		{
+			name:      "builder boost factor of the default, 100 returns 100",
+			args:      args{raw: "100"},
+			wantRaw:   "100",
+			wantValue: 100,
+			wantOK:    true,
+		},
+		{
+			name:      "builder boost factor max uint64 returns max uint64",
+			args:      args{raw: "18446744073709551615"},
+			wantRaw:   "18446744073709551615",
+			wantValue: math.MaxUint64,
+			wantOK:    true,
+		},
+		{
+			name:      "builder boost factor as a percentage returns error",
+			args:      args{raw: "0.30"},
+			wantRaw:   "",
+			wantValue: 0,
+			wantOK:    false,
+		},
+		{
+			name:      "builder boost factor negative int returns error",
+			args:      args{raw: "-100"},
+			wantRaw:   "",
+			wantValue: 0,
+			wantOK:    false,
+		},
+		{
+			name:      "builder boost factor max uint64 +1 returns error",
+			args:      args{raw: "18446744073709551616"},
+			wantRaw:   "",
+			wantValue: 0,
+			wantOK:    false,
+		},
+		{
+			name:      "builder boost factor of invalid string returns error",
+			args:      args{raw: "asdf"},
+			wantRaw:   "",
+			wantValue: 0,
+			wantOK:    false,
+		},
+		{
+			name:      "builder boost factor of number bigger than uint64 string returns error",
+			args:      args{raw: "9871398721983721908372190837219837129803721983719283798217390821739081273918273918273918273981273982139812739821"},
+			wantRaw:   "",
+			wantValue: 0,
+			wantOK:    false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			query := "builder_boost_factor"
+			bbreq := httptest.NewRequest("GET", "/eth/v3/validator/blocks/{slot}?builder_boost_factor="+tt.args.raw, nil)
+			w := httptest.NewRecorder()
+			got, got1, got2 := UintFromQuery(w, bbreq, query, false)
+			if got != tt.wantRaw {
+				t.Errorf("UintFromQuery() got = %v, wantRaw %v", got, tt.wantRaw)
+			}
+			if got1 != tt.wantValue {
+				t.Errorf("UintFromQuery() got1 = %v, wantRaw %v", got1, tt.wantValue)
+			}
+			if got2 != tt.wantOK {
+				t.Errorf("UintFromQuery() got2 = %v, wantRaw %v", got2, tt.wantOK)
+			}
+		})
+	}
+}
diff --git a/beacon-chain/rpc/eth/validator/BUILD.bazel b/beacon-chain/rpc/eth/validator/BUILD.bazel
index c5678bdedcee..d817a3c10f80 100644
--- a/beacon-chain/rpc/eth/validator/BUILD.bazel
+++ b/beacon-chain/rpc/eth/validator/BUILD.bazel
@@ -46,6 +46,7 @@ go_library(
         "@io_opencensus_go//trace:go_default_library",
         "@org_golang_google_grpc//codes:go_default_library",
         "@org_golang_google_grpc//status:go_default_library",
+        "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library",
     ],
 )
 
diff --git a/beacon-chain/rpc/eth/validator/handlers_block.go b/beacon-chain/rpc/eth/validator/handlers_block.go
index 6ba739f77243..805633a1c11b 100644
--- a/beacon-chain/rpc/eth/validator/handlers_block.go
+++ b/beacon-chain/rpc/eth/validator/handlers_block.go
@@ -19,6 +19,7 @@ import (
 	eth "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 	"go.opencensus.io/trace"
+	"google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 type blockType uint8
@@ -155,6 +156,15 @@ func (s *Server) ProduceBlockV3(w http.ResponseWriter, r *http.Request) {
 	rawGraffiti := r.URL.Query().Get("graffiti")
 	rawSkipRandaoVerification := r.URL.Query().Get("skip_randao_verification")
 
+	var bbFactor *wrapperspb.UInt64Value // default the factor via fall back
+	rawBbFactor, bbValue, ok := shared.UintFromQuery(w, r, "builder_boost_factor", false)
+	if !ok {
+		return
+	}
+	if rawBbFactor != "" {
+		bbFactor = &wrapperspb.UInt64Value{Value: bbValue}
+	}
+
 	slot, valid := shared.ValidateUint(w, "slot", rawSlot)
 	if !valid {
 		return
@@ -182,10 +192,11 @@ func (s *Server) ProduceBlockV3(w http.ResponseWriter, r *http.Request) {
 	}
 
 	s.produceBlockV3(ctx, w, r, &eth.BlockRequest{
-		Slot:         primitives.Slot(slot),
-		RandaoReveal: randaoReveal,
-		Graffiti:     graffiti,
-		SkipMevBoost: false,
+		Slot:               primitives.Slot(slot),
+		RandaoReveal:       randaoReveal,
+		Graffiti:           graffiti,
+		SkipMevBoost:       false,
+		BuilderBoostFactor: bbFactor,
 	}, any)
 }
 
diff --git a/beacon-chain/rpc/prysm/v1alpha1/validator/proposer.go b/beacon-chain/rpc/prysm/v1alpha1/validator/proposer.go
index c34215ceee94..744151d26edd 100644
--- a/beacon-chain/rpc/prysm/v1alpha1/validator/proposer.go
+++ b/beacon-chain/rpc/prysm/v1alpha1/validator/proposer.go
@@ -38,7 +38,8 @@ import (
 var eth1DataNotification bool
 
 const (
-	eth1dataTimeout = 2 * time.Second
+	eth1dataTimeout           = 2 * time.Second
+	defaultBuilderBoostFactor = uint64(100)
 )
 
 // GetBeaconBlock is called by a proposer during its assigned slot to request a block to sign
@@ -108,7 +109,12 @@ func (vs *Server) GetBeaconBlock(ctx context.Context, req *ethpb.BlockRequest) (
 	}
 	sBlk.SetProposerIndex(idx)
 
-	if err = vs.BuildBlockParallel(ctx, sBlk, head, req.SkipMevBoost); err != nil {
+	builderBoostFactor := defaultBuilderBoostFactor
+	if req.BuilderBoostFactor != nil {
+		builderBoostFactor = req.BuilderBoostFactor.Value
+	}
+
+	if err = vs.BuildBlockParallel(ctx, sBlk, head, req.SkipMevBoost, builderBoostFactor); err != nil {
 		return nil, errors.Wrap(err, "could not build block in parallel")
 	}
 
@@ -128,7 +134,7 @@ func (vs *Server) GetBeaconBlock(ctx context.Context, req *ethpb.BlockRequest) (
 	return vs.constructGenericBeaconBlock(sBlk, bundleCache.get(req.Slot))
 }
 
-func (vs *Server) BuildBlockParallel(ctx context.Context, sBlk interfaces.SignedBeaconBlock, head state.BeaconState, skipMevBoost bool) error {
+func (vs *Server) BuildBlockParallel(ctx context.Context, sBlk interfaces.SignedBeaconBlock, head state.BeaconState, skipMevBoost bool, builderBoostFactor uint64) error {
 	// Build consensus fields in background
 	var wg sync.WaitGroup
 	wg.Add(1)
@@ -186,7 +192,7 @@ func (vs *Server) BuildBlockParallel(ctx context.Context, sBlk interfaces.Signed
 		}
 	}
 
-	if err := setExecutionData(ctx, sBlk, localPayload, builderPayload, builderKzgCommitments); err != nil {
+	if err := setExecutionData(ctx, sBlk, localPayload, builderPayload, builderKzgCommitments, builderBoostFactor); err != nil {
 		return status.Errorf(codes.Internal, "Could not set execution data: %v", err)
 	}
 
diff --git a/beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix.go b/beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix.go
index 0d8a411ddc33..c1e64fad3072 100644
--- a/beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix.go
+++ b/beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix.go
@@ -41,7 +41,7 @@ var emptyTransactionsRoot = [32]byte{127, 254, 36, 30, 166, 1, 135, 253, 176, 24
 const blockBuilderTimeout = 1 * time.Second
 
 // Sets the execution data for the block. Execution data can come from local EL client or remote builder depends on validator registration and circuit breaker conditions.
-func setExecutionData(ctx context.Context, blk interfaces.SignedBeaconBlock, localPayload, builderPayload interfaces.ExecutionData, builderKzgCommitments [][]byte) error {
+func setExecutionData(ctx context.Context, blk interfaces.SignedBeaconBlock, localPayload, builderPayload interfaces.ExecutionData, builderKzgCommitments [][]byte, builderBoostFactor uint64) error {
 	_, span := trace.StartSpan(ctx, "ProposerServer.setExecutionData")
 	defer span.End()
 
@@ -80,9 +80,17 @@ func setExecutionData(ctx context.Context, blk interfaces.SignedBeaconBlock, loc
 		}
 
 		// Use builder payload if the following in true:
-		// builder_bid_value * 100 > local_block_value * (local-block-value-boost + 100)
+		// builder_bid_value * builderBoostFactor(default 100) > local_block_value * (local-block-value-boost + 100)
 		boost := params.BeaconConfig().LocalBlockValueBoost
-		higherValueBuilder := builderValueGwei*100 > localValueGwei*(100+boost)
+		higherValueBuilder := builderValueGwei*builderBoostFactor > localValueGwei*(100+boost)
+		if boost > 0 && builderBoostFactor != defaultBuilderBoostFactor {
+			log.WithFields(logrus.Fields{
+				"localGweiValue":       localValueGwei,
+				"localBoostPercentage": boost,
+				"builderGweiValue":     builderValueGwei,
+				"builderBoostFactor":   builderBoostFactor,
+			}).Warn("Proposer: both local boost and builder boost are using non default values")
+		}
 
 		// If we can't get the builder value, just use local block.
 		if higherValueBuilder && withdrawalsMatched { // Builder value is higher and withdrawals match.
@@ -98,13 +106,15 @@ func setExecutionData(ctx context.Context, blk interfaces.SignedBeaconBlock, loc
 				"localGweiValue":       localValueGwei,
 				"localBoostPercentage": boost,
 				"builderGweiValue":     builderValueGwei,
+				"builderBoostFactor":   builderBoostFactor,
 			}).Warn("Proposer: using local execution payload because higher value")
 		}
 		span.AddAttributes(
 			trace.BoolAttribute("higherValueBuilder", higherValueBuilder),
-			trace.Int64Attribute("localGweiValue", int64(localValueGwei)),     // lint:ignore uintcast -- This is OK for tracing.
-			trace.Int64Attribute("localBoostPercentage", int64(boost)),        // lint:ignore uintcast -- This is OK for tracing.
-			trace.Int64Attribute("builderGweiValue", int64(builderValueGwei)), // lint:ignore uintcast -- This is OK for tracing.
+			trace.Int64Attribute("localGweiValue", int64(localValueGwei)),         // lint:ignore uintcast -- This is OK for tracing.
+			trace.Int64Attribute("localBoostPercentage", int64(boost)),            // lint:ignore uintcast -- This is OK for tracing.
+			trace.Int64Attribute("builderGweiValue", int64(builderValueGwei)),     // lint:ignore uintcast -- This is OK for tracing.
+			trace.Int64Attribute("builderBoostFactor", int64(builderBoostFactor)), // lint:ignore uintcast -- This is OK for tracing.
 		)
 		return setLocalExecution(blk, localPayload)
 	default: // Bellatrix case.
diff --git a/beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix_test.go b/beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix_test.go
index 6910095090ce..a35a646119f4 100644
--- a/beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix_test.go
+++ b/beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix_test.go
@@ -2,6 +2,7 @@ package validator
 
 import (
 	"context"
+	"math"
 	"math/big"
 	"testing"
 	"time"
@@ -96,7 +97,7 @@ func TestServer_setExecutionData(t *testing.T) {
 		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
-		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments))
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, defaultBuilderBoostFactor))
 		e, err := blk.Block().Body().Execution()
 		require.NoError(t, err)
 		require.Equal(t, uint64(1), e.BlockNumber()) // Local block
@@ -156,7 +157,7 @@ func TestServer_setExecutionData(t *testing.T) {
 		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
-		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments))
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, defaultBuilderBoostFactor))
 		e, err := blk.Block().Body().Execution()
 		require.NoError(t, err)
 		require.Equal(t, uint64(1), e.BlockNumber()) // Local block because incorrect withdrawals
@@ -219,11 +220,137 @@ func TestServer_setExecutionData(t *testing.T) {
 		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
-		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments))
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, defaultBuilderBoostFactor))
 		e, err := blk.Block().Body().Execution()
 		require.NoError(t, err)
 		require.Equal(t, uint64(2), e.BlockNumber()) // Builder block
 	})
+	t.Run("Max builder boost factor should return builder", func(t *testing.T) {
+		blk, err := blocks.NewSignedBeaconBlock(util.NewBlindedBeaconBlockCapella())
+		require.NoError(t, err)
+		require.NoError(t, vs.BeaconDB.SaveRegistrationsByValidatorIDs(ctx, []primitives.ValidatorIndex{blk.Block().ProposerIndex()},
+			[]*ethpb.ValidatorRegistrationV1{{FeeRecipient: make([]byte, fieldparams.FeeRecipientLength), Timestamp: uint64(time.Now().Unix()), Pubkey: make([]byte, fieldparams.BLSPubkeyLength)}}))
+		ti, err := slots.ToTime(uint64(time.Now().Unix()), 0)
+		require.NoError(t, err)
+		sk, err := bls.RandKey()
+		require.NoError(t, err)
+		wr, err := ssz.WithdrawalSliceRoot(withdrawals, fieldparams.MaxWithdrawalsPerPayload)
+		require.NoError(t, err)
+		builderValue := bytesutil.ReverseByteOrder(big.NewInt(1e9).Bytes())
+		bid := &ethpb.BuilderBidCapella{
+			Header: &v1.ExecutionPayloadHeaderCapella{
+				FeeRecipient:     make([]byte, fieldparams.FeeRecipientLength),
+				StateRoot:        make([]byte, fieldparams.RootLength),
+				ReceiptsRoot:     make([]byte, fieldparams.RootLength),
+				LogsBloom:        make([]byte, fieldparams.LogsBloomLength),
+				PrevRandao:       make([]byte, fieldparams.RootLength),
+				BaseFeePerGas:    make([]byte, fieldparams.RootLength),
+				BlockHash:        make([]byte, fieldparams.RootLength),
+				TransactionsRoot: bytesutil.PadTo([]byte{1}, fieldparams.RootLength),
+				ParentHash:       params.BeaconConfig().ZeroHash[:],
+				Timestamp:        uint64(ti.Unix()),
+				BlockNumber:      2,
+				WithdrawalsRoot:  wr[:],
+			},
+			Pubkey: sk.PublicKey().Marshal(),
+			Value:  bytesutil.PadTo(builderValue, 32),
+		}
+		d := params.BeaconConfig().DomainApplicationBuilder
+		domain, err := signing.ComputeDomain(d, nil, nil)
+		require.NoError(t, err)
+		sr, err := signing.ComputeSigningRoot(bid, domain)
+		require.NoError(t, err)
+		sBid := &ethpb.SignedBuilderBidCapella{
+			Message:   bid,
+			Signature: sk.Sign(sr[:]).Marshal(),
+		}
+		vs.BlockBuilder = &builderTest.MockBuilderService{
+			BidCapella:    sBid,
+			HasConfigured: true,
+			Cfg:           &builderTest.Config{BeaconDB: beaconDB},
+		}
+		wb, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockCapella())
+		require.NoError(t, err)
+		chain := &blockchainTest.ChainService{ForkChoiceStore: doublylinkedtree.New(), Genesis: time.Now(), Block: wb}
+		vs.ForkFetcher = chain
+		vs.ForkchoiceFetcher.SetForkChoiceGenesisTime(uint64(time.Now().Unix()))
+		vs.TimeFetcher = chain
+		vs.HeadFetcher = chain
+
+		b := blk.Block()
+		localPayload, _, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		require.NoError(t, err)
+		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
+		require.NoError(t, err)
+		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, math.MaxUint64))
+		e, err := blk.Block().Body().Execution()
+		require.NoError(t, err)
+		require.Equal(t, uint64(2), e.BlockNumber()) // builder block
+	})
+	t.Run("Builder builder has higher value but forced to local payload with builder boost factor", func(t *testing.T) {
+		blk, err := blocks.NewSignedBeaconBlock(util.NewBlindedBeaconBlockCapella())
+		require.NoError(t, err)
+		require.NoError(t, vs.BeaconDB.SaveRegistrationsByValidatorIDs(ctx, []primitives.ValidatorIndex{blk.Block().ProposerIndex()},
+			[]*ethpb.ValidatorRegistrationV1{{FeeRecipient: make([]byte, fieldparams.FeeRecipientLength), Timestamp: uint64(time.Now().Unix()), Pubkey: make([]byte, fieldparams.BLSPubkeyLength)}}))
+		ti, err := slots.ToTime(uint64(time.Now().Unix()), 0)
+		require.NoError(t, err)
+		sk, err := bls.RandKey()
+		require.NoError(t, err)
+		wr, err := ssz.WithdrawalSliceRoot(withdrawals, fieldparams.MaxWithdrawalsPerPayload)
+		require.NoError(t, err)
+		builderValue := bytesutil.ReverseByteOrder(big.NewInt(1e9).Bytes())
+		bid := &ethpb.BuilderBidCapella{
+			Header: &v1.ExecutionPayloadHeaderCapella{
+				FeeRecipient:     make([]byte, fieldparams.FeeRecipientLength),
+				StateRoot:        make([]byte, fieldparams.RootLength),
+				ReceiptsRoot:     make([]byte, fieldparams.RootLength),
+				LogsBloom:        make([]byte, fieldparams.LogsBloomLength),
+				PrevRandao:       make([]byte, fieldparams.RootLength),
+				BaseFeePerGas:    make([]byte, fieldparams.RootLength),
+				BlockHash:        make([]byte, fieldparams.RootLength),
+				TransactionsRoot: bytesutil.PadTo([]byte{1}, fieldparams.RootLength),
+				ParentHash:       params.BeaconConfig().ZeroHash[:],
+				Timestamp:        uint64(ti.Unix()),
+				BlockNumber:      2,
+				WithdrawalsRoot:  wr[:],
+			},
+			Pubkey: sk.PublicKey().Marshal(),
+			Value:  bytesutil.PadTo(builderValue, 32),
+		}
+		d := params.BeaconConfig().DomainApplicationBuilder
+		domain, err := signing.ComputeDomain(d, nil, nil)
+		require.NoError(t, err)
+		sr, err := signing.ComputeSigningRoot(bid, domain)
+		require.NoError(t, err)
+		sBid := &ethpb.SignedBuilderBidCapella{
+			Message:   bid,
+			Signature: sk.Sign(sr[:]).Marshal(),
+		}
+		vs.BlockBuilder = &builderTest.MockBuilderService{
+			BidCapella:    sBid,
+			HasConfigured: true,
+			Cfg:           &builderTest.Config{BeaconDB: beaconDB},
+		}
+		wb, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockCapella())
+		require.NoError(t, err)
+		chain := &blockchainTest.ChainService{ForkChoiceStore: doublylinkedtree.New(), Genesis: time.Now(), Block: wb}
+		vs.ForkFetcher = chain
+		vs.ForkchoiceFetcher.SetForkChoiceGenesisTime(uint64(time.Now().Unix()))
+		vs.TimeFetcher = chain
+		vs.HeadFetcher = chain
+
+		b := blk.Block()
+		localPayload, _, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		require.NoError(t, err)
+		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
+		require.NoError(t, err)
+		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, 0))
+		e, err := blk.Block().Body().Execution()
+		require.NoError(t, err)
+		require.Equal(t, uint64(1), e.BlockNumber()) // local block
+	})
 	t.Run("Builder configured. Local block has higher value", func(t *testing.T) {
 		blk, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockCapella())
 		require.NoError(t, err)
@@ -234,14 +361,14 @@ func TestServer_setExecutionData(t *testing.T) {
 		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
-		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments))
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, defaultBuilderBoostFactor))
 		e, err := blk.Block().Body().Execution()
 		require.NoError(t, err)
 		require.Equal(t, uint64(3), e.BlockNumber()) // Local block
 
 		require.LogsContain(t, hook, "builderGweiValue=1 localBoostPercentage=0 localGweiValue=2")
 	})
-	t.Run("Builder configured. Local block and boost has higher value", func(t *testing.T) {
+	t.Run("Builder configured. Local block and local boost has higher value", func(t *testing.T) {
 		cfg := params.BeaconConfig().Copy()
 		cfg.LocalBlockValueBoost = 1 // Boost 1%.
 		params.OverrideBeaconConfig(cfg)
@@ -255,7 +382,7 @@ func TestServer_setExecutionData(t *testing.T) {
 		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
-		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments))
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, defaultBuilderBoostFactor))
 		e, err := blk.Block().Body().Execution()
 		require.NoError(t, err)
 		require.Equal(t, uint64(3), e.BlockNumber()) // Local block
@@ -277,7 +404,7 @@ func TestServer_setExecutionData(t *testing.T) {
 		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.ErrorIs(t, consensus_types.ErrNilObjectWrapped, err) // Builder returns fault. Use local block
 		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
-		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments))
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, defaultBuilderBoostFactor))
 		e, err := blk.Block().Body().Execution()
 		require.NoError(t, err)
 		require.Equal(t, uint64(4), e.BlockNumber()) // Local block
@@ -385,7 +512,7 @@ func TestServer_setExecutionData(t *testing.T) {
 
 		localPayload, _, err := vs.getLocalPayload(ctx, blk.Block(), denebTransitionState)
 		require.NoError(t, err)
-		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments))
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, defaultBuilderBoostFactor))
 
 		got, err := blk.Block().Body().BlobKzgCommitments()
 		require.NoError(t, err)
diff --git a/proto/prysm/v1alpha1/BUILD.bazel b/proto/prysm/v1alpha1/BUILD.bazel
index a9882592bd39..754d0428baea 100644
--- a/proto/prysm/v1alpha1/BUILD.bazel
+++ b/proto/prysm/v1alpha1/BUILD.bazel
@@ -35,6 +35,7 @@ proto_library(
         "@com_google_protobuf//:any_proto",
         "@com_google_protobuf//:descriptor_proto",
         "@com_google_protobuf//:empty_proto",
+        "@com_google_protobuf//:wrappers_proto",
         "@com_google_protobuf//:timestamp_proto",
         "@googleapis//google/api:annotations_proto",
     ],
@@ -156,6 +157,7 @@ go_proto_library(
         "@org_golang_google_protobuf//runtime/protoimpl:go_default_library",
         "@org_golang_google_protobuf//types/descriptorpb:go_default_library",
         "@org_golang_google_protobuf//types/known/emptypb:go_default_library",
+        "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library",
         "@org_golang_google_protobuf//types/known/timestamppb:go_default_library",
     ],
 )
@@ -176,6 +178,7 @@ go_proto_library(
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
         "@googleapis//google/api:annotations_go_proto",
         "@io_bazel_rules_go//proto/wkt:descriptor_go_proto",
+        "@io_bazel_rules_go//proto/wkt:wrappers_go_proto",
         "@io_bazel_rules_go//proto/wkt:timestamp_go_proto",
         "@org_golang_google_protobuf//types/descriptorpb:go_default_library",
         "@org_golang_google_protobuf//types/known/emptypb:go_default_library",
diff --git a/proto/prysm/v1alpha1/validator.pb.go b/proto/prysm/v1alpha1/validator.pb.go
index 0e98790e0015..021c31c4083e 100755
--- a/proto/prysm/v1alpha1/validator.pb.go
+++ b/proto/prysm/v1alpha1/validator.pb.go
@@ -20,6 +20,7 @@ import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	emptypb "google.golang.org/protobuf/types/known/emptypb"
+	wrapperspb "google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 const (
@@ -1257,10 +1258,11 @@ type BlockRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Slot         github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.Slot `protobuf:"varint,1,opt,name=slot,proto3" json:"slot,omitempty" cast-type:"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.Slot"`
-	RandaoReveal []byte                                                            `protobuf:"bytes,2,opt,name=randao_reveal,json=randaoReveal,proto3" json:"randao_reveal,omitempty" ssz-size:"48"`
-	Graffiti     []byte                                                            `protobuf:"bytes,3,opt,name=graffiti,proto3" json:"graffiti,omitempty" ssz-size:"32"`
-	SkipMevBoost bool                                                              `protobuf:"varint,4,opt,name=skip_mev_boost,json=skipMevBoost,proto3" json:"skip_mev_boost,omitempty"`
+	Slot               github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.Slot `protobuf:"varint,1,opt,name=slot,proto3" json:"slot,omitempty" cast-type:"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.Slot"`
+	RandaoReveal       []byte                                                            `protobuf:"bytes,2,opt,name=randao_reveal,json=randaoReveal,proto3" json:"randao_reveal,omitempty" ssz-size:"48"`
+	Graffiti           []byte                                                            `protobuf:"bytes,3,opt,name=graffiti,proto3" json:"graffiti,omitempty" ssz-size:"32"`
+	SkipMevBoost       bool                                                              `protobuf:"varint,4,opt,name=skip_mev_boost,json=skipMevBoost,proto3" json:"skip_mev_boost,omitempty"`
+	BuilderBoostFactor *wrapperspb.UInt64Value                                           `protobuf:"bytes,5,opt,name=builder_boost_factor,json=builderBoostFactor,proto3" json:"builder_boost_factor,omitempty"`
 }
 
 func (x *BlockRequest) Reset() {
@@ -1323,6 +1325,13 @@ func (x *BlockRequest) GetSkipMevBoost() bool {
 	return false
 }
 
+func (x *BlockRequest) GetBuilderBoostFactor() *wrapperspb.UInt64Value {
+	if x != nil {
+		return x.BuilderBoostFactor
+	}
+	return nil
+}
+
 type ProposeResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -2978,7 +2987,9 @@ var file_proto_prysm_v1alpha1_validator_proto_rawDesc = []byte{
 	0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61,
 	0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1b, 0x67, 0x6f, 0x6f,
 	0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x65, 0x6d, 0x70,
-	0x74, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1b, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f,
+	0x74, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65,
+	0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x77, 0x72, 0x61, 0x70, 0x70, 0x65,
+	0x72, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1b, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f,
 	0x65, 0x74, 0x68, 0x2f, 0x65, 0x78, 0x74, 0x2f, 0x6f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e,
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x27, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x70, 0x72, 0x79,
 	0x73, 0x6d, 0x2f, 0x76, 0x31, 0x61, 0x6c, 0x70, 0x68, 0x61, 0x31, 0x2f, 0x62, 0x65, 0x61, 0x63,
@@ -3251,8 +3262,8 @@ var file_proto_prysm_v1alpha1_validator_proto_rawDesc = []byte{
 	0x65, 0x78, 0x52, 0x0e, 0x76, 0x61, 0x6c, 0x69, 0x64, 0x61, 0x74, 0x6f, 0x72, 0x49, 0x6e, 0x64,
 	0x65, 0x78, 0x12, 0x2a, 0x0a, 0x11, 0x69, 0x73, 0x5f, 0x73, 0x79, 0x6e, 0x63, 0x5f, 0x63, 0x6f,
 	0x6d, 0x6d, 0x69, 0x74, 0x74, 0x65, 0x65, 0x18, 0x08, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0f, 0x69,
-	0x73, 0x53, 0x79, 0x6e, 0x63, 0x43, 0x6f, 0x6d, 0x6d, 0x69, 0x74, 0x74, 0x65, 0x65, 0x22, 0xe0,
-	0x01, 0x0a, 0x0c, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12,
+	0x73, 0x53, 0x79, 0x6e, 0x63, 0x43, 0x6f, 0x6d, 0x6d, 0x69, 0x74, 0x74, 0x65, 0x65, 0x22, 0xb0,
+	0x02, 0x0a, 0x0c, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12,
 	0x59, 0x0a, 0x04, 0x73, 0x6c, 0x6f, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x42, 0x45, 0x82,
 	0xb5, 0x18, 0x41, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x70, 0x72,
 	0x79, 0x73, 0x6d, 0x61, 0x74, 0x69, 0x63, 0x6c, 0x61, 0x62, 0x73, 0x2f, 0x70, 0x72, 0x79, 0x73,
@@ -3266,7 +3277,12 @@ var file_proto_prysm_v1alpha1_validator_proto_rawDesc = []byte{
 	0x32, 0x52, 0x08, 0x67, 0x72, 0x61, 0x66, 0x66, 0x69, 0x74, 0x69, 0x12, 0x24, 0x0a, 0x0e, 0x73,
 	0x6b, 0x69, 0x70, 0x5f, 0x6d, 0x65, 0x76, 0x5f, 0x62, 0x6f, 0x6f, 0x73, 0x74, 0x18, 0x04, 0x20,
 	0x01, 0x28, 0x08, 0x52, 0x0c, 0x73, 0x6b, 0x69, 0x70, 0x4d, 0x65, 0x76, 0x42, 0x6f, 0x6f, 0x73,
-	0x74, 0x22, 0x38, 0x0a, 0x0f, 0x50, 0x72, 0x6f, 0x70, 0x6f, 0x73, 0x65, 0x52, 0x65, 0x73, 0x70,
+	0x74, 0x12, 0x4e, 0x0a, 0x14, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x65, 0x72, 0x5f, 0x62, 0x6f, 0x6f,
+	0x73, 0x74, 0x5f, 0x66, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0b, 0x32,
+	0x1c, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75,
+	0x66, 0x2e, 0x55, 0x49, 0x6e, 0x74, 0x36, 0x34, 0x56, 0x61, 0x6c, 0x75, 0x65, 0x52, 0x12, 0x62,
+	0x75, 0x69, 0x6c, 0x64, 0x65, 0x72, 0x42, 0x6f, 0x6f, 0x73, 0x74, 0x46, 0x61, 0x63, 0x74, 0x6f,
+	0x72, 0x22, 0x38, 0x0a, 0x0f, 0x50, 0x72, 0x6f, 0x70, 0x6f, 0x73, 0x65, 0x52, 0x65, 0x73, 0x70,
 	0x6f, 0x6e, 0x73, 0x65, 0x12, 0x25, 0x0a, 0x0a, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x5f, 0x72, 0x6f,
 	0x6f, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x42, 0x06, 0x8a, 0xb5, 0x18, 0x02, 0x33, 0x32,
 	0x52, 0x09, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x52, 0x6f, 0x6f, 0x74, 0x22, 0x3a, 0x0a, 0x13, 0x50,
@@ -3963,18 +3979,19 @@ var file_proto_prysm_v1alpha1_validator_proto_goTypes = []interface{}{
 	(*SignedBeaconBlockBellatrix)(nil),                         // 51: ethereum.eth.v1alpha1.SignedBeaconBlockBellatrix
 	(*SignedBeaconBlockCapella)(nil),                           // 52: ethereum.eth.v1alpha1.SignedBeaconBlockCapella
 	(*SignedBeaconBlockDeneb)(nil),                             // 53: ethereum.eth.v1alpha1.SignedBeaconBlockDeneb
-	(*AggregateAttestationAndProof)(nil),                       // 54: ethereum.eth.v1alpha1.AggregateAttestationAndProof
-	(*SignedAggregateAttestationAndProof)(nil),                 // 55: ethereum.eth.v1alpha1.SignedAggregateAttestationAndProof
-	(*SyncCommitteeMessage)(nil),                               // 56: ethereum.eth.v1alpha1.SyncCommitteeMessage
-	(*emptypb.Empty)(nil),                                      // 57: google.protobuf.Empty
-	(*GenericSignedBeaconBlock)(nil),                           // 58: ethereum.eth.v1alpha1.GenericSignedBeaconBlock
-	(*Attestation)(nil),                                        // 59: ethereum.eth.v1alpha1.Attestation
-	(*SignedVoluntaryExit)(nil),                                // 60: ethereum.eth.v1alpha1.SignedVoluntaryExit
-	(*SignedContributionAndProof)(nil),                         // 61: ethereum.eth.v1alpha1.SignedContributionAndProof
-	(*SignedValidatorRegistrationsV1)(nil),                     // 62: ethereum.eth.v1alpha1.SignedValidatorRegistrationsV1
-	(*GenericBeaconBlock)(nil),                                 // 63: ethereum.eth.v1alpha1.GenericBeaconBlock
-	(*AttestationData)(nil),                                    // 64: ethereum.eth.v1alpha1.AttestationData
-	(*SyncCommitteeContribution)(nil),                          // 65: ethereum.eth.v1alpha1.SyncCommitteeContribution
+	(*wrapperspb.UInt64Value)(nil),                             // 54: google.protobuf.UInt64Value
+	(*AggregateAttestationAndProof)(nil),                       // 55: ethereum.eth.v1alpha1.AggregateAttestationAndProof
+	(*SignedAggregateAttestationAndProof)(nil),                 // 56: ethereum.eth.v1alpha1.SignedAggregateAttestationAndProof
+	(*SyncCommitteeMessage)(nil),                               // 57: ethereum.eth.v1alpha1.SyncCommitteeMessage
+	(*emptypb.Empty)(nil),                                      // 58: google.protobuf.Empty
+	(*GenericSignedBeaconBlock)(nil),                           // 59: ethereum.eth.v1alpha1.GenericSignedBeaconBlock
+	(*Attestation)(nil),                                        // 60: ethereum.eth.v1alpha1.Attestation
+	(*SignedVoluntaryExit)(nil),                                // 61: ethereum.eth.v1alpha1.SignedVoluntaryExit
+	(*SignedContributionAndProof)(nil),                         // 62: ethereum.eth.v1alpha1.SignedContributionAndProof
+	(*SignedValidatorRegistrationsV1)(nil),                     // 63: ethereum.eth.v1alpha1.SignedValidatorRegistrationsV1
+	(*GenericBeaconBlock)(nil),                                 // 64: ethereum.eth.v1alpha1.GenericBeaconBlock
+	(*AttestationData)(nil),                                    // 65: ethereum.eth.v1alpha1.AttestationData
+	(*SyncCommitteeContribution)(nil),                          // 66: ethereum.eth.v1alpha1.SyncCommitteeContribution
 }
 var file_proto_prysm_v1alpha1_validator_proto_depIdxs = []int32{
 	49, // 0: ethereum.eth.v1alpha1.StreamBlocksResponse.phase0_block:type_name -> ethereum.eth.v1alpha1.SignedBeaconBlock
@@ -3988,79 +4005,80 @@ var file_proto_prysm_v1alpha1_validator_proto_depIdxs = []int32{
 	45, // 8: ethereum.eth.v1alpha1.DutiesResponse.duties:type_name -> ethereum.eth.v1alpha1.DutiesResponse.Duty
 	45, // 9: ethereum.eth.v1alpha1.DutiesResponse.current_epoch_duties:type_name -> ethereum.eth.v1alpha1.DutiesResponse.Duty
 	45, // 10: ethereum.eth.v1alpha1.DutiesResponse.next_epoch_duties:type_name -> ethereum.eth.v1alpha1.DutiesResponse.Duty
-	54, // 11: ethereum.eth.v1alpha1.AggregateSelectionResponse.aggregate_and_proof:type_name -> ethereum.eth.v1alpha1.AggregateAttestationAndProof
-	55, // 12: ethereum.eth.v1alpha1.SignedAggregateSubmitRequest.signed_aggregate_and_proof:type_name -> ethereum.eth.v1alpha1.SignedAggregateAttestationAndProof
-	0,  // 13: ethereum.eth.v1alpha1.ValidatorInfo.status:type_name -> ethereum.eth.v1alpha1.ValidatorStatus
-	46, // 14: ethereum.eth.v1alpha1.DoppelGangerRequest.validator_requests:type_name -> ethereum.eth.v1alpha1.DoppelGangerRequest.ValidatorRequest
-	47, // 15: ethereum.eth.v1alpha1.DoppelGangerResponse.responses:type_name -> ethereum.eth.v1alpha1.DoppelGangerResponse.ValidatorResponse
-	48, // 16: ethereum.eth.v1alpha1.PrepareBeaconProposerRequest.recipients:type_name -> ethereum.eth.v1alpha1.PrepareBeaconProposerRequest.FeeRecipientContainer
-	0,  // 17: ethereum.eth.v1alpha1.AssignValidatorToSubnetRequest.status:type_name -> ethereum.eth.v1alpha1.ValidatorStatus
-	56, // 18: ethereum.eth.v1alpha1.AggregatedSigAndAggregationBitsRequest.msgs:type_name -> ethereum.eth.v1alpha1.SyncCommitteeMessage
-	16, // 19: ethereum.eth.v1alpha1.ValidatorActivationResponse.Status.status:type_name -> ethereum.eth.v1alpha1.ValidatorStatusResponse
-	0,  // 20: ethereum.eth.v1alpha1.DutiesResponse.Duty.status:type_name -> ethereum.eth.v1alpha1.ValidatorStatus
-	19, // 21: ethereum.eth.v1alpha1.BeaconNodeValidator.GetDuties:input_type -> ethereum.eth.v1alpha1.DutiesRequest
-	19, // 22: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamDuties:input_type -> ethereum.eth.v1alpha1.DutiesRequest
-	7,  // 23: ethereum.eth.v1alpha1.BeaconNodeValidator.DomainData:input_type -> ethereum.eth.v1alpha1.DomainRequest
-	57, // 24: ethereum.eth.v1alpha1.BeaconNodeValidator.WaitForChainStart:input_type -> google.protobuf.Empty
-	9,  // 25: ethereum.eth.v1alpha1.BeaconNodeValidator.WaitForActivation:input_type -> ethereum.eth.v1alpha1.ValidatorActivationRequest
-	13, // 26: ethereum.eth.v1alpha1.BeaconNodeValidator.ValidatorIndex:input_type -> ethereum.eth.v1alpha1.ValidatorIndexRequest
-	15, // 27: ethereum.eth.v1alpha1.BeaconNodeValidator.ValidatorStatus:input_type -> ethereum.eth.v1alpha1.ValidatorStatusRequest
-	17, // 28: ethereum.eth.v1alpha1.BeaconNodeValidator.MultipleValidatorStatus:input_type -> ethereum.eth.v1alpha1.MultipleValidatorStatusRequest
-	21, // 29: ethereum.eth.v1alpha1.BeaconNodeValidator.GetBeaconBlock:input_type -> ethereum.eth.v1alpha1.BlockRequest
-	58, // 30: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeBeaconBlock:input_type -> ethereum.eth.v1alpha1.GenericSignedBeaconBlock
-	38, // 31: ethereum.eth.v1alpha1.BeaconNodeValidator.PrepareBeaconProposer:input_type -> ethereum.eth.v1alpha1.PrepareBeaconProposerRequest
-	39, // 32: ethereum.eth.v1alpha1.BeaconNodeValidator.GetFeeRecipientByPubKey:input_type -> ethereum.eth.v1alpha1.FeeRecipientByPubKeyRequest
-	24, // 33: ethereum.eth.v1alpha1.BeaconNodeValidator.GetAttestationData:input_type -> ethereum.eth.v1alpha1.AttestationDataRequest
-	59, // 34: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeAttestation:input_type -> ethereum.eth.v1alpha1.Attestation
-	26, // 35: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitAggregateSelectionProof:input_type -> ethereum.eth.v1alpha1.AggregateSelectionRequest
-	28, // 36: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSignedAggregateSelectionProof:input_type -> ethereum.eth.v1alpha1.SignedAggregateSubmitRequest
-	60, // 37: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeExit:input_type -> ethereum.eth.v1alpha1.SignedVoluntaryExit
-	30, // 38: ethereum.eth.v1alpha1.BeaconNodeValidator.SubscribeCommitteeSubnets:input_type -> ethereum.eth.v1alpha1.CommitteeSubnetsSubscribeRequest
-	34, // 39: ethereum.eth.v1alpha1.BeaconNodeValidator.CheckDoppelGanger:input_type -> ethereum.eth.v1alpha1.DoppelGangerRequest
-	57, // 40: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncMessageBlockRoot:input_type -> google.protobuf.Empty
-	56, // 41: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSyncMessage:input_type -> ethereum.eth.v1alpha1.SyncCommitteeMessage
-	2,  // 42: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncSubcommitteeIndex:input_type -> ethereum.eth.v1alpha1.SyncSubcommitteeIndexRequest
-	3,  // 43: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncCommitteeContribution:input_type -> ethereum.eth.v1alpha1.SyncCommitteeContributionRequest
-	61, // 44: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSignedContributionAndProof:input_type -> ethereum.eth.v1alpha1.SignedContributionAndProof
-	36, // 45: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamSlots:input_type -> ethereum.eth.v1alpha1.StreamSlotsRequest
-	37, // 46: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamBlocksAltair:input_type -> ethereum.eth.v1alpha1.StreamBlocksRequest
-	62, // 47: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitValidatorRegistrations:input_type -> ethereum.eth.v1alpha1.SignedValidatorRegistrationsV1
-	41, // 48: ethereum.eth.v1alpha1.BeaconNodeValidator.AssignValidatorToSubnet:input_type -> ethereum.eth.v1alpha1.AssignValidatorToSubnetRequest
-	42, // 49: ethereum.eth.v1alpha1.BeaconNodeValidator.AggregatedSigAndAggregationBits:input_type -> ethereum.eth.v1alpha1.AggregatedSigAndAggregationBitsRequest
-	20, // 50: ethereum.eth.v1alpha1.BeaconNodeValidator.GetDuties:output_type -> ethereum.eth.v1alpha1.DutiesResponse
-	20, // 51: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamDuties:output_type -> ethereum.eth.v1alpha1.DutiesResponse
-	8,  // 52: ethereum.eth.v1alpha1.BeaconNodeValidator.DomainData:output_type -> ethereum.eth.v1alpha1.DomainResponse
-	11, // 53: ethereum.eth.v1alpha1.BeaconNodeValidator.WaitForChainStart:output_type -> ethereum.eth.v1alpha1.ChainStartResponse
-	10, // 54: ethereum.eth.v1alpha1.BeaconNodeValidator.WaitForActivation:output_type -> ethereum.eth.v1alpha1.ValidatorActivationResponse
-	14, // 55: ethereum.eth.v1alpha1.BeaconNodeValidator.ValidatorIndex:output_type -> ethereum.eth.v1alpha1.ValidatorIndexResponse
-	16, // 56: ethereum.eth.v1alpha1.BeaconNodeValidator.ValidatorStatus:output_type -> ethereum.eth.v1alpha1.ValidatorStatusResponse
-	18, // 57: ethereum.eth.v1alpha1.BeaconNodeValidator.MultipleValidatorStatus:output_type -> ethereum.eth.v1alpha1.MultipleValidatorStatusResponse
-	63, // 58: ethereum.eth.v1alpha1.BeaconNodeValidator.GetBeaconBlock:output_type -> ethereum.eth.v1alpha1.GenericBeaconBlock
-	22, // 59: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeBeaconBlock:output_type -> ethereum.eth.v1alpha1.ProposeResponse
-	57, // 60: ethereum.eth.v1alpha1.BeaconNodeValidator.PrepareBeaconProposer:output_type -> google.protobuf.Empty
-	40, // 61: ethereum.eth.v1alpha1.BeaconNodeValidator.GetFeeRecipientByPubKey:output_type -> ethereum.eth.v1alpha1.FeeRecipientByPubKeyResponse
-	64, // 62: ethereum.eth.v1alpha1.BeaconNodeValidator.GetAttestationData:output_type -> ethereum.eth.v1alpha1.AttestationData
-	25, // 63: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeAttestation:output_type -> ethereum.eth.v1alpha1.AttestResponse
-	27, // 64: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitAggregateSelectionProof:output_type -> ethereum.eth.v1alpha1.AggregateSelectionResponse
-	29, // 65: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSignedAggregateSelectionProof:output_type -> ethereum.eth.v1alpha1.SignedAggregateSubmitResponse
-	23, // 66: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeExit:output_type -> ethereum.eth.v1alpha1.ProposeExitResponse
-	57, // 67: ethereum.eth.v1alpha1.BeaconNodeValidator.SubscribeCommitteeSubnets:output_type -> google.protobuf.Empty
-	35, // 68: ethereum.eth.v1alpha1.BeaconNodeValidator.CheckDoppelGanger:output_type -> ethereum.eth.v1alpha1.DoppelGangerResponse
-	1,  // 69: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncMessageBlockRoot:output_type -> ethereum.eth.v1alpha1.SyncMessageBlockRootResponse
-	57, // 70: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSyncMessage:output_type -> google.protobuf.Empty
-	4,  // 71: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncSubcommitteeIndex:output_type -> ethereum.eth.v1alpha1.SyncSubcommitteeIndexResponse
-	65, // 72: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncCommitteeContribution:output_type -> ethereum.eth.v1alpha1.SyncCommitteeContribution
-	57, // 73: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSignedContributionAndProof:output_type -> google.protobuf.Empty
-	5,  // 74: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamSlots:output_type -> ethereum.eth.v1alpha1.StreamSlotsResponse
-	6,  // 75: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamBlocksAltair:output_type -> ethereum.eth.v1alpha1.StreamBlocksResponse
-	57, // 76: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitValidatorRegistrations:output_type -> google.protobuf.Empty
-	57, // 77: ethereum.eth.v1alpha1.BeaconNodeValidator.AssignValidatorToSubnet:output_type -> google.protobuf.Empty
-	43, // 78: ethereum.eth.v1alpha1.BeaconNodeValidator.AggregatedSigAndAggregationBits:output_type -> ethereum.eth.v1alpha1.AggregatedSigAndAggregationBitsResponse
-	50, // [50:79] is the sub-list for method output_type
-	21, // [21:50] is the sub-list for method input_type
-	21, // [21:21] is the sub-list for extension type_name
-	21, // [21:21] is the sub-list for extension extendee
-	0,  // [0:21] is the sub-list for field type_name
+	54, // 11: ethereum.eth.v1alpha1.BlockRequest.builder_boost_factor:type_name -> google.protobuf.UInt64Value
+	55, // 12: ethereum.eth.v1alpha1.AggregateSelectionResponse.aggregate_and_proof:type_name -> ethereum.eth.v1alpha1.AggregateAttestationAndProof
+	56, // 13: ethereum.eth.v1alpha1.SignedAggregateSubmitRequest.signed_aggregate_and_proof:type_name -> ethereum.eth.v1alpha1.SignedAggregateAttestationAndProof
+	0,  // 14: ethereum.eth.v1alpha1.ValidatorInfo.status:type_name -> ethereum.eth.v1alpha1.ValidatorStatus
+	46, // 15: ethereum.eth.v1alpha1.DoppelGangerRequest.validator_requests:type_name -> ethereum.eth.v1alpha1.DoppelGangerRequest.ValidatorRequest
+	47, // 16: ethereum.eth.v1alpha1.DoppelGangerResponse.responses:type_name -> ethereum.eth.v1alpha1.DoppelGangerResponse.ValidatorResponse
+	48, // 17: ethereum.eth.v1alpha1.PrepareBeaconProposerRequest.recipients:type_name -> ethereum.eth.v1alpha1.PrepareBeaconProposerRequest.FeeRecipientContainer
+	0,  // 18: ethereum.eth.v1alpha1.AssignValidatorToSubnetRequest.status:type_name -> ethereum.eth.v1alpha1.ValidatorStatus
+	57, // 19: ethereum.eth.v1alpha1.AggregatedSigAndAggregationBitsRequest.msgs:type_name -> ethereum.eth.v1alpha1.SyncCommitteeMessage
+	16, // 20: ethereum.eth.v1alpha1.ValidatorActivationResponse.Status.status:type_name -> ethereum.eth.v1alpha1.ValidatorStatusResponse
+	0,  // 21: ethereum.eth.v1alpha1.DutiesResponse.Duty.status:type_name -> ethereum.eth.v1alpha1.ValidatorStatus
+	19, // 22: ethereum.eth.v1alpha1.BeaconNodeValidator.GetDuties:input_type -> ethereum.eth.v1alpha1.DutiesRequest
+	19, // 23: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamDuties:input_type -> ethereum.eth.v1alpha1.DutiesRequest
+	7,  // 24: ethereum.eth.v1alpha1.BeaconNodeValidator.DomainData:input_type -> ethereum.eth.v1alpha1.DomainRequest
+	58, // 25: ethereum.eth.v1alpha1.BeaconNodeValidator.WaitForChainStart:input_type -> google.protobuf.Empty
+	9,  // 26: ethereum.eth.v1alpha1.BeaconNodeValidator.WaitForActivation:input_type -> ethereum.eth.v1alpha1.ValidatorActivationRequest
+	13, // 27: ethereum.eth.v1alpha1.BeaconNodeValidator.ValidatorIndex:input_type -> ethereum.eth.v1alpha1.ValidatorIndexRequest
+	15, // 28: ethereum.eth.v1alpha1.BeaconNodeValidator.ValidatorStatus:input_type -> ethereum.eth.v1alpha1.ValidatorStatusRequest
+	17, // 29: ethereum.eth.v1alpha1.BeaconNodeValidator.MultipleValidatorStatus:input_type -> ethereum.eth.v1alpha1.MultipleValidatorStatusRequest
+	21, // 30: ethereum.eth.v1alpha1.BeaconNodeValidator.GetBeaconBlock:input_type -> ethereum.eth.v1alpha1.BlockRequest
+	59, // 31: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeBeaconBlock:input_type -> ethereum.eth.v1alpha1.GenericSignedBeaconBlock
+	38, // 32: ethereum.eth.v1alpha1.BeaconNodeValidator.PrepareBeaconProposer:input_type -> ethereum.eth.v1alpha1.PrepareBeaconProposerRequest
+	39, // 33: ethereum.eth.v1alpha1.BeaconNodeValidator.GetFeeRecipientByPubKey:input_type -> ethereum.eth.v1alpha1.FeeRecipientByPubKeyRequest
+	24, // 34: ethereum.eth.v1alpha1.BeaconNodeValidator.GetAttestationData:input_type -> ethereum.eth.v1alpha1.AttestationDataRequest
+	60, // 35: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeAttestation:input_type -> ethereum.eth.v1alpha1.Attestation
+	26, // 36: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitAggregateSelectionProof:input_type -> ethereum.eth.v1alpha1.AggregateSelectionRequest
+	28, // 37: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSignedAggregateSelectionProof:input_type -> ethereum.eth.v1alpha1.SignedAggregateSubmitRequest
+	61, // 38: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeExit:input_type -> ethereum.eth.v1alpha1.SignedVoluntaryExit
+	30, // 39: ethereum.eth.v1alpha1.BeaconNodeValidator.SubscribeCommitteeSubnets:input_type -> ethereum.eth.v1alpha1.CommitteeSubnetsSubscribeRequest
+	34, // 40: ethereum.eth.v1alpha1.BeaconNodeValidator.CheckDoppelGanger:input_type -> ethereum.eth.v1alpha1.DoppelGangerRequest
+	58, // 41: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncMessageBlockRoot:input_type -> google.protobuf.Empty
+	57, // 42: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSyncMessage:input_type -> ethereum.eth.v1alpha1.SyncCommitteeMessage
+	2,  // 43: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncSubcommitteeIndex:input_type -> ethereum.eth.v1alpha1.SyncSubcommitteeIndexRequest
+	3,  // 44: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncCommitteeContribution:input_type -> ethereum.eth.v1alpha1.SyncCommitteeContributionRequest
+	62, // 45: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSignedContributionAndProof:input_type -> ethereum.eth.v1alpha1.SignedContributionAndProof
+	36, // 46: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamSlots:input_type -> ethereum.eth.v1alpha1.StreamSlotsRequest
+	37, // 47: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamBlocksAltair:input_type -> ethereum.eth.v1alpha1.StreamBlocksRequest
+	63, // 48: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitValidatorRegistrations:input_type -> ethereum.eth.v1alpha1.SignedValidatorRegistrationsV1
+	41, // 49: ethereum.eth.v1alpha1.BeaconNodeValidator.AssignValidatorToSubnet:input_type -> ethereum.eth.v1alpha1.AssignValidatorToSubnetRequest
+	42, // 50: ethereum.eth.v1alpha1.BeaconNodeValidator.AggregatedSigAndAggregationBits:input_type -> ethereum.eth.v1alpha1.AggregatedSigAndAggregationBitsRequest
+	20, // 51: ethereum.eth.v1alpha1.BeaconNodeValidator.GetDuties:output_type -> ethereum.eth.v1alpha1.DutiesResponse
+	20, // 52: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamDuties:output_type -> ethereum.eth.v1alpha1.DutiesResponse
+	8,  // 53: ethereum.eth.v1alpha1.BeaconNodeValidator.DomainData:output_type -> ethereum.eth.v1alpha1.DomainResponse
+	11, // 54: ethereum.eth.v1alpha1.BeaconNodeValidator.WaitForChainStart:output_type -> ethereum.eth.v1alpha1.ChainStartResponse
+	10, // 55: ethereum.eth.v1alpha1.BeaconNodeValidator.WaitForActivation:output_type -> ethereum.eth.v1alpha1.ValidatorActivationResponse
+	14, // 56: ethereum.eth.v1alpha1.BeaconNodeValidator.ValidatorIndex:output_type -> ethereum.eth.v1alpha1.ValidatorIndexResponse
+	16, // 57: ethereum.eth.v1alpha1.BeaconNodeValidator.ValidatorStatus:output_type -> ethereum.eth.v1alpha1.ValidatorStatusResponse
+	18, // 58: ethereum.eth.v1alpha1.BeaconNodeValidator.MultipleValidatorStatus:output_type -> ethereum.eth.v1alpha1.MultipleValidatorStatusResponse
+	64, // 59: ethereum.eth.v1alpha1.BeaconNodeValidator.GetBeaconBlock:output_type -> ethereum.eth.v1alpha1.GenericBeaconBlock
+	22, // 60: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeBeaconBlock:output_type -> ethereum.eth.v1alpha1.ProposeResponse
+	58, // 61: ethereum.eth.v1alpha1.BeaconNodeValidator.PrepareBeaconProposer:output_type -> google.protobuf.Empty
+	40, // 62: ethereum.eth.v1alpha1.BeaconNodeValidator.GetFeeRecipientByPubKey:output_type -> ethereum.eth.v1alpha1.FeeRecipientByPubKeyResponse
+	65, // 63: ethereum.eth.v1alpha1.BeaconNodeValidator.GetAttestationData:output_type -> ethereum.eth.v1alpha1.AttestationData
+	25, // 64: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeAttestation:output_type -> ethereum.eth.v1alpha1.AttestResponse
+	27, // 65: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitAggregateSelectionProof:output_type -> ethereum.eth.v1alpha1.AggregateSelectionResponse
+	29, // 66: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSignedAggregateSelectionProof:output_type -> ethereum.eth.v1alpha1.SignedAggregateSubmitResponse
+	23, // 67: ethereum.eth.v1alpha1.BeaconNodeValidator.ProposeExit:output_type -> ethereum.eth.v1alpha1.ProposeExitResponse
+	58, // 68: ethereum.eth.v1alpha1.BeaconNodeValidator.SubscribeCommitteeSubnets:output_type -> google.protobuf.Empty
+	35, // 69: ethereum.eth.v1alpha1.BeaconNodeValidator.CheckDoppelGanger:output_type -> ethereum.eth.v1alpha1.DoppelGangerResponse
+	1,  // 70: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncMessageBlockRoot:output_type -> ethereum.eth.v1alpha1.SyncMessageBlockRootResponse
+	58, // 71: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSyncMessage:output_type -> google.protobuf.Empty
+	4,  // 72: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncSubcommitteeIndex:output_type -> ethereum.eth.v1alpha1.SyncSubcommitteeIndexResponse
+	66, // 73: ethereum.eth.v1alpha1.BeaconNodeValidator.GetSyncCommitteeContribution:output_type -> ethereum.eth.v1alpha1.SyncCommitteeContribution
+	58, // 74: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitSignedContributionAndProof:output_type -> google.protobuf.Empty
+	5,  // 75: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamSlots:output_type -> ethereum.eth.v1alpha1.StreamSlotsResponse
+	6,  // 76: ethereum.eth.v1alpha1.BeaconNodeValidator.StreamBlocksAltair:output_type -> ethereum.eth.v1alpha1.StreamBlocksResponse
+	58, // 77: ethereum.eth.v1alpha1.BeaconNodeValidator.SubmitValidatorRegistrations:output_type -> google.protobuf.Empty
+	58, // 78: ethereum.eth.v1alpha1.BeaconNodeValidator.AssignValidatorToSubnet:output_type -> google.protobuf.Empty
+	43, // 79: ethereum.eth.v1alpha1.BeaconNodeValidator.AggregatedSigAndAggregationBits:output_type -> ethereum.eth.v1alpha1.AggregatedSigAndAggregationBitsResponse
+	51, // [51:80] is the sub-list for method output_type
+	22, // [22:51] is the sub-list for method input_type
+	22, // [22:22] is the sub-list for extension type_name
+	22, // [22:22] is the sub-list for extension extendee
+	0,  // [0:22] is the sub-list for field type_name
 }
 
 func init() { file_proto_prysm_v1alpha1_validator_proto_init() }
diff --git a/proto/prysm/v1alpha1/validator.proto b/proto/prysm/v1alpha1/validator.proto
index c99a3fb0ce6e..05cff205c88b 100644
--- a/proto/prysm/v1alpha1/validator.proto
+++ b/proto/prysm/v1alpha1/validator.proto
@@ -17,6 +17,7 @@ package ethereum.eth.v1alpha1;
 
 import "google/api/annotations.proto";
 import "google/protobuf/empty.proto";
+import "google/protobuf/wrappers.proto";
 
 import "proto/eth/ext/options.proto";
 
@@ -566,6 +567,9 @@ message BlockRequest {
 
     // Signal server to skip outsourcing block request from mev-boost/relayer so that returned block will always be a local block.
     bool skip_mev_boost = 4;
+
+    // Percentage multiplier to apply to the builder's payload value when choosing between a builder payload header and payload from the paired execution node
+    google.protobuf.UInt64Value builder_boost_factor = 5;
 }
 
 message ProposeResponse {