Allen, Williford and Seale is a real estate appraisal firm specializing in property valuation, with its corporate headquarters located in Houston. Its services include market research, appraisal reports and reviews, litigation support, and continuing education. Established in 1977, it has been involved in nationwide projects, such as pipeline and utility easements, railroad and highway right of ways, salt domes, fiber optics and airports. It has appraised all types of property, including subdivisions, apartments, office, retail, industrial space, entertainment facilities, agricultural and vacant acreage, and special purpose land. Allen, Williford and Seale has also conducted appraisals for federal, state and local agencies, and the private sector.