The real estate (real property) industry involves the buying, selling and renting of land, buildings and housing. Business opportunities in the industry are divided into four distinct fields: (1) sales, (2) management, (3) development, (4) acquisition and analysis. Although crossover among these sectors is possible, most businesses specialize in a specific area. Examples of real estate businesses include: home preparation service, real estate appraiser, real estate agency, abstracting service, architect, association management service, boarding house operator, for sale by owner specialist, real estate investor, relocation consultant, vacation rentals broker, etc.