diff --git a/build_prod_apk.sh b/build_prod_apk.sh
index a78c64f..709d3f2 100755
--- a/build_prod_apk.sh
+++ b/build_prod_apk.sh
@@ -6,12 +6,31 @@ ENV_FILE="env/prod.json"
 OUTPUT_DIR="build/outputs"
 APK_SRC="build/app/outputs/flutter-apk/app-release.apk"
 APK_DEST="$OUTPUT_DIR/rentaldrivego-release.apk"
+LOCAL_PROPERTIES="android/local.properties"
+
+resolve_flutter() {
+  if command -v flutter &>/dev/null; then
+    command -v flutter
+    return 0
+  fi
+
+  if [[ -f "$LOCAL_PROPERTIES" ]]; then
+    local sdk_path
+    sdk_path="$(sed -n 's/^flutter\.sdk=//p' "$LOCAL_PROPERTIES" | head -n 1)"
+    if [[ -n "$sdk_path" && -x "$sdk_path/bin/flutter" ]]; then
+      echo "$sdk_path/bin/flutter"
+      return 0
+    fi
+  fi
+
+  return 1
+}
 
 # ── Checks ────────────────────────────────────────────────────────────────────
 cd "$(dirname "$0")"
 
-if ! command -v flutter &>/dev/null; then
-  echo "❌  flutter not found in PATH"
+if ! FLUTTER_BIN="$(resolve_flutter)"; then
+  echo "❌  flutter not found in PATH or $LOCAL_PROPERTIES"
   exit 1
 fi
 
@@ -22,13 +41,13 @@ fi
 
 # ── Build ─────────────────────────────────────────────────────────────────────
 echo "▶  Cleaning previous build..."
-flutter clean
+"$FLUTTER_BIN" clean
 
 echo "▶  Fetching dependencies..."
-flutter pub get
+"$FLUTTER_BIN" pub get
 
 echo "▶  Building release APK (production)..."
-flutter build apk --release --dart-define-from-file="$ENV_FILE"
+"$FLUTTER_BIN" build apk --release --dart-define-from-file="$ENV_FILE"
 
 # ── Copy to output ────────────────────────────────────────────────────────────
 mkdir -p "$OUTPUT_DIR"