The first guests always arrive late and lost
A housewarming has a problem no other party has: the address is new to everyone, including whoever's trying to tell you how to reach it. Guests circle the block, park two roads away, and arrive flustered. The invitation page settles it โ it carries the address, the way in, and where to leave the car, in words and in a map they can open from their phone on the corner.
There's no housewarming design to switch on yet, so you start from the nearest party setup and rewrite it as your own. The general toolkit is what a first night at a new place needs: a shareable page, replies tracked against names, plus-ones inside a limit, reminders, and a clear place to spell out directions and what to bring.