diff --git a/ui/build/bazel.go b/ui/build/bazel.go
new file mode 100644
index 0000000..c5702c0
--- /dev/null
+++ b/ui/build/bazel.go
@@ -0,0 +1,54 @@
+// Copyright 2020 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package build
+
+import (
+	"path/filepath"
+	"strings"
+)
+
+func runBazel(ctx Context, config Config) {
+	// "droid" is the default ninja target.
+	outputGroups := "droid"
+	if len(config.ninjaArgs) > 0 {
+		// At this stage, the residue slice of args passed to ninja
+		// are the ninja targets to build, which can correspond directly
+		// to ninja_build's output_groups.
+		outputGroups = strings.Join(config.ninjaArgs, ",")
+	}
+
+	bazelExecutable := filepath.Join("tools", "bazel")
+	args := []string{
+		"build",
+		"--verbose_failures",
+		"--show_progress_rate_limit=0.05",
+		"--color=yes",
+		"--curses=yes",
+		"--show_timestamps",
+		"--announce_rc",
+		"--output_groups=" + outputGroups,
+		"//:" + config.TargetProduct() + "-" + config.TargetBuildVariant(),
+	}
+
+	cmd := Command(ctx, config, "bazel", bazelExecutable, args...)
+
+	cmd.Environment.Set("DIST_DIR", config.DistDir())
+	cmd.Environment.Set("SHELL", "/bin/bash")
+
+	ctx.Println(cmd.Cmd)
+	cmd.Dir = filepath.Join(config.OutDir(), "..")
+	ctx.Status.Status("Starting Bazel..")
+	cmd.RunAndStreamOrFatal()
+}