Real Estate Headquarters Company of Gresham has been purchased from its founder, Donna Burlingame, by Diana Allmer, a broker with the company. Allmer has a 14 year background in real estate sales as well as 12 years as a manager in the foreclosure and R.E.O. group at US Bank. Burlingame will remain with the company as a broker and consultant and will concentrate in real estate sales and development. Real Estate Headquarters Company is a full service real estate company, with individual brokers specializing in various areas of new construction, with builders and developers, re-sale homes, first-time homebuyers, investor properties and foreclosure properties.