Real Estate & Housing: Related Web Sites

Homes.com - nationwide directory of houses for sale, real estate listings, home financing, and mortgage companies and brokers.
National Association of Home Builders - site includes a section on economic and housing data.
National Association of Realtors - industry trade association. Site includes a section on real estate law and policy.
American Real Estate Society (ARES) - society of and for practicing professionals and real estate professors.