Unlike Winterfell, this was just to house himself, and now her. Even if they added a child to it, there'd be room still for more. If it ever came to expanding their little family, a new home would be procured, though he had a feeling by that time, they'd have moved to another part of the world to avoid him and his unaging being detected. "Without central heating and air conditioning, it'd be too cold when winter hits as well. Especially this close to the water."