diff --git a/tools/finalization/localonly-steps.sh b/tools/finalization/localonly-steps.sh
new file mode 100755
index 0000000..6107b3e
--- /dev/null
+++ b/tools/finalization/localonly-steps.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+set -ex
+
+function finalize_locally() {
+    local top="$(dirname "$0")"/../../../..
+    source $top/build/make/tools/finalization/environment.sh
+
+    # default target to modify tree and build SDK
+    local m="$top/build/soong/soong_ui.bash --make-mode TARGET_PRODUCT=aosp_arm64 TARGET_BUILD_VARIANT=userdebug DIST_DIR=out/dist"
+
+    # adb keys
+    $m adb
+    LOGNAME=android-eng HOSTNAME=google.com "$top/out/host/linux-x86/bin/adb" keygen "$top/vendor/google/security/adb/${FINAL_PLATFORM_VERSION}.adb_key"
+
+    # Build Platform SDKs.
+    $top/build/soong/soong_ui.bash --make-mode TARGET_PRODUCT=sdk TARGET_BUILD_VARIANT=userdebug sdk dist sdk_repo DIST_DIR=out/dist
+
+    # Build Modules SDKs.
+    TARGET_BUILD_VARIANT=userdebug UNBUNDLED_BUILD_SDKS_FROM_SOURCE=true DIST_DIR=out/dist "$top/vendor/google/build/mainline_modules_sdks.sh"
+
+    # Update prebuilts.
+    "$top/prebuilts/build-tools/path/linux-x86/python3" -W ignore::DeprecationWarning "$top/prebuilts/sdk/update_prebuilts.py" --local_mode -f ${FINAL_PLATFORM_SDK_VERSION} -e ${FINAL_MAINLINE_EXTENSION} --bug 1 1
+}
+
+finalize_locally