Congrats on the new home. As @Linn mentioned, our Support staff would be happy to assist you in getting you setup with your new Rachio. In order to establish you as the new user, you'll just need to have your device serial number handy. You can find it on the sticker on the front of your Rachio after removing the faceplate.
Feel free to contact us by email or give us a call at 1-844-4-RACHIO.
Hope you have a great rest of your day!