USConstruction.com and ModSpace.com are good websites to find used construction trailers for sale, as of 2015. Other sources include Richie Bros. Auctioneers, Hale Trailer Brake and Wheel and eBay.
U.S. Construction Trailers sells used office trailers for construction building sites. The trailer sizes include 8-foot, 10-foot and 12-foot models. The trailers, which are located throughout the United States, are delivered directly to the job site.
ModSpace has new and used construction office trailers for sale and for rent. The modular trailers are ideal for construction job sites, industrial plant shutdowns and swing space. Ritchie Bros. Auctioneers sells new and used office trailers from brands that include Ameri-Tech, Atco and Abris Mobiles.