ArchNet is a member-driven website that contains a digital library of images that deal with architecture and urban planning in a very easily searchable database. There are often plans, sections and elevations to accompany the general views of the buildings. It also allows participation and collaboration amongst members, and is free to join.
I have found that there is strong documentation of projects and the search feature is quite easy to use.
Access to the Digital Library is found through a link on the left hand side, and that is also where the search feature is located. Clicking on the search feature and typing in housing gets me to projects in Africa and Iran, places that are less well documented in this School’s collection.
The Images link within the Digital Library gets me to a list of architecture by Collection, or by Country, Building Type or Building Style. They also include Gardens and Urban Design and Development. And you can download the images.
My favorite website for the week: archnet.org