diff --git a/ui/build/build.go b/ui/build/build.go
index 2022e50..b9bd898 100644
--- a/ui/build/build.go
+++ b/ui/build/build.go
@@ -112,9 +112,19 @@
 // checkBazelMode fails the build if there are conflicting arguments for which bazel
 // build mode to use.
 func checkBazelMode(ctx Context, config Config) {
-	if config.bazelProdMode && config.bazelDevMode {
+	count := 0
+	if config.bazelProdMode {
+		count++
+	}
+	if config.bazelDevMode {
+		count++
+	}
+	if config.bazelStagingMode {
+		count++
+	}
+	if count > 1 {
 		ctx.Fatalln("Conflicting bazel mode.\n" +
-			"Do not specify both --bazel-mode and --bazel-mode-dev")
+			"Do not specify more than one of --bazel-mode and --bazel-mode-dev and --bazel-mode-staging ")
 	}
 }
 
diff --git a/ui/build/config.go b/ui/build/config.go
index f6f5b46..cde8d5d 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -100,8 +100,9 @@
 
 	pathReplaced bool
 
-	bazelProdMode bool
-	bazelDevMode  bool
+	bazelProdMode    bool
+	bazelDevMode     bool
+	bazelStagingMode bool
 
 	// Set by multiproduct_kati
 	emptyNinjaFile bool
@@ -721,6 +722,8 @@
 			c.bazelProdMode = true
 		} else if arg == "--bazel-mode-dev" {
 			c.bazelDevMode = true
+		} else if arg == "--bazel-mode-staging" {
+			c.bazelStagingMode = true
 		} else if len(arg) > 0 && arg[0] == '-' {
 			parseArgNum := func(def int) int {
 				if len(arg) > 2 {
@@ -1115,7 +1118,7 @@
 }
 
 func (c *configImpl) BazelBuildEnabled() bool {
-	return c.bazelProdMode || c.bazelDevMode
+	return c.bazelProdMode || c.bazelDevMode || c.bazelStagingMode
 }
 
 func (c *configImpl) StartRBE() bool {
diff --git a/ui/build/config_test.go b/ui/build/config_test.go
index 150ec35..9ea5110 100644
--- a/ui/build/config_test.go
+++ b/ui/build/config_test.go
@@ -1008,6 +1008,7 @@
 		useBazel            bool
 		bazelDevMode        bool
 		bazelProdMode       bool
+		bazelStagingMode    bool
 		expectedBuildConfig *smpb.BuildConfig
 	}{
 		{
@@ -1084,6 +1085,17 @@
 			},
 		},
 		{
+			name:             "bazel mixed build from staging mode",
+			environ:          Environment{},
+			bazelStagingMode: true,
+			expectedBuildConfig: &smpb.BuildConfig{
+				ForceUseGoma:    proto.Bool(false),
+				UseGoma:         proto.Bool(false),
+				UseRbe:          proto.Bool(false),
+				BazelMixedBuild: proto.Bool(true),
+			},
+		},
+		{
 			name:      "specified targets",
 			environ:   Environment{},
 			useBazel:  true,
@@ -1118,10 +1130,11 @@
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
 			c := &configImpl{
-				environ:       &tc.environ,
-				bazelDevMode:  tc.bazelDevMode,
-				bazelProdMode: tc.bazelProdMode,
-				arguments:     tc.arguments,
+				environ:          &tc.environ,
+				bazelDevMode:     tc.bazelDevMode,
+				bazelProdMode:    tc.bazelProdMode,
+				bazelStagingMode: tc.bazelStagingMode,
+				arguments:        tc.arguments,
 			}
 			config := Config{c}
 			checkBazelMode(ctx, config)
diff --git a/ui/build/soong.go b/ui/build/soong.go
index 28c6ec9..c87f993 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -260,6 +260,9 @@
 	if config.bazelDevMode {
 		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--bazel-mode-dev")
 	}
+	if config.bazelStagingMode {
+		mainSoongBuildExtraArgs = append(mainSoongBuildExtraArgs, "--bazel-mode-staging")
+	}
 
 	mainSoongBuildInvocation := primaryBuilderInvocation(
 		config,