Meet our investors. Call for Offers will be November 25th. The only online marketplace that allows investors to buy leased single-family homes without interrupting tenant occupancy. If you want to buy a single-tenant home that’s already leased, Roofstock’s marketplace offers a variety of properties at different price points. LoopNet is a website that allows you to search commercial real estate for sale and for lease. You can also sign up for something called SearchAssist by Realtor.