The V&A states the obvious:
Homes: The home is the most common form of building in the world. Whether housing a large family or just one person, all homes are arranged around domestic routines and activities. Local traditions affect the ways in which private and public rooms are designed. The size and individuality of our homes may also say something about our social standing.
The V&A’s Architecture section isn’t that great, but the entrance does feature an extraordinary isometric drawing of St. Paul’s Cathedral. Would love to get a print of this!
Regarding houses, one of my favourites is Mies van der Rohe’s Farnsworth House.