101 Sim Lane Real Estates - Provides a variety of images and downloads. - http://simlane.webelation.net/
About: The Sims Homes - Offers a log cabin collection, small starter homes, and large family houses. - http://compsimgames.about.com/library/files/thesims/blshome1.htm
SDevil's Sims Houses - Large and small homes sorted by lot number. Each is available furnished or unfurnished, and most have plain wallpapers and floors, and little landscaping. Some require expansion packs. - http://sdsims.bluenotecafe.org/
Nerva - A collection of ancient Roman villas. - http://www.antonius.20m.com/