Eplans.com is a website that sells blueprints for houses.
This might not seem that helpful but if you want a characters house you can make selections based on what sort of house you want them to live in.
Then browse through the results and find the house you want. Then you can view the blueprints and have a room layout for that house, which can help with visualising the space they live in.
It makes describing generic homes so much easier.
‘Urban Nomads is the first book about an upcoming and hard-to-define new lifestyle. It sheds a light on possible new ways of living, working, cooking, and medical care in an age of increasing flexibility. The book is a huge catalogue of movable micro buildings and well-designed solutions for on-the-go living experiences, all based around themes like instant housing, instant cooking, instant exhibition, and instant help.’