This is the most popular type of real estate and the category that most people are familiar with. According to Accrue Real Estate, residential involves any property available for domestic residence or non-business purposes. There are a wide array of options and categories to choose from in this type of real estate. It’s no surprise both renting and leasing constitute the largest sector of the United States' economy. Within residential, there are single-family houses, multi-family houses,  condominiums, townhouses, cooperatives, houseboats, Duplex, triplex, fourplex, vacation homes.