The English Mediaeval House by Margaret Wood is pretty good and (at least over here in the UK) a very reasonable price (hardback from £1.10).
I have a 1994 edition and it is very useful- 576pp. 117 figures- b/w plans, drawing of features and buildings, interiors and exteriors. There are 32 plates of engravings, most with several pictures on each - giving 54 b/w illustrations and 60 photographic plates, most pages conatining multiple photographs to give over 140 b/w photographs.
The photographs are mostly by the author and the book was first published in 1965, so the quality of photographic reproduction may not be quite as expected now, but it covers a lot of ground in detail.