diff --git a/.gitignore b/.gitignore
index 7c4441c..a9b7e78 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ yarn.lock
 *.js
 *.js.map
 .nyc_output/
+node_modules/
\ No newline at end of file
diff --git a/src/is-my-room/index.ts b/src/is-my-room/index.ts
new file mode 100644
index 0000000..59de9da
--- /dev/null
+++ b/src/is-my-room/index.ts
@@ -0,0 +1,21 @@
+import { isRoomVisible } from '@open-screeps/is-room-visible';
+
+export function isMyRoom(roomName: string | Room): boolean {
+	let room: Room;
+
+	if (typeof roomName === 'string') {
+		if (!isRoomVisible(roomName)) {
+			return false;
+		}
+
+		room = Game.rooms[roomName];
+	} else {
+		room = roomName;
+	}
+
+	if (room.controller === undefined) {
+		return false;
+	}
+
+	return room.controller.my;
+}
diff --git a/src/is-my-room/package.json b/src/is-my-room/package.json
new file mode 100644
index 0000000..64ceb61
--- /dev/null
+++ b/src/is-my-room/package.json
@@ -0,0 +1,49 @@
+{
+  "name": "@open-screeps/is-my-room",
+  "version": "0.0.0-development",
+  "description": "Check wether a room is yours",
+  "main": "index.js",
+  "scripts": {
+    "lint": "tslint -p ./tsconfig.json",
+    "test": "tsc && nyc ava",
+    "prepare": "npm test",
+    "release": "semantic-release -e semantic-release-monorepo"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/postcrafter/open-screeps.git"
+  },
+  "files": [
+    "index.{d.ts,js,js.map}"
+  ],
+  "keywords": [
+    "screeps",
+    "open-screeps"
+  ],
+  "author": "Adam Laycock",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/postcrafter/open-screeps/issues"
+  },
+  "homepage": "https://github.com/postcrafter/open-screeps/src/is-my-room#readme",
+  "dependencies": {
+    "@types/screeps": "^0.0.0",
+    "@open-screeps/is-room-visible": "^1.0.0"
+  },
+  "devDependencies": {
+    "ava": "^0.24.0",
+    "condition-circle": "^2.0.1",
+    "nyc": "^11.3.0",
+    "semantic-release": "^11.0.2",
+    "semantic-release-monorepo": "^4.0.0",
+    "tslint": "^5.9.1",
+    "tslint-config-airbnb": "^5.4.2",
+    "typescript": "^2.6.2"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "release": {
+    "verifyConditions": "condition-circle"
+  }
+}
diff --git a/src/is-my-room/readme.md b/src/is-my-room/readme.md
new file mode 100644
index 0000000..d3168ca
--- /dev/null
+++ b/src/is-my-room/readme.md
@@ -0,0 +1,20 @@
+# is-my-room
+> Check wether a room is yours
+
+## Install
+```sh
+$ npm install @open-screeps/is-my-room
+```
+
+## Usage
+```typescript
+import { isMyRoom } from '@open-screeps/is-my-room';
+
+const myRooms = _.filter(Game.rooms, room => isMyRoom(room))
+```
+
+## Related
+- [is-room-visible](https://github.com/PostCrafter/open-screeps/tree/master/src/is-room-visible)
+
+## License
+[MIT](../../license.md)
diff --git a/src/is-my-room/test.ts b/src/is-my-room/test.ts
new file mode 100644
index 0000000..55445f2
--- /dev/null
+++ b/src/is-my-room/test.ts
@@ -0,0 +1,35 @@
+import ava from 'ava';
+
+import { isMyRoom } from './index';
+
+declare const global: any;
+
+function stubGame() {
+	global.Game = {
+		rooms: {
+			W1N1: {
+				controller: {
+					my: true,
+				},
+			},
+			W2N1: {
+				controller: {
+					my: false,
+				},
+			},
+			W3N1: {},
+		},
+	};
+}
+
+ava('Should only return true for owned rooms', (t) => {
+	stubGame();
+
+	t.true(isMyRoom('W1N1'));
+	t.false(isMyRoom('W2N1'));
+	t.false(isMyRoom('W3N1'));
+	t.false(isMyRoom('E1N1'));
+	t.true(isMyRoom(Game.rooms['W1N1']));
+	t.false(isMyRoom(Game.rooms['W3N1']));
+	t.false(isMyRoom(''));
+});
diff --git a/src/is-my-room/tsconfig.json b/src/is-my-room/tsconfig.json
new file mode 100644
index 0000000..9536a0f
--- /dev/null
+++ b/src/is-my-room/tsconfig.json
@@ -0,0 +1,3 @@
+{
+  "extends": "../../tsconfig.base.json"
+}