PITTSBURGH -- Howard Hanna Real Estate Services will host its 15th annual Open House Extravaganza, where it will have a showcase of more than 4,000 houses in four states Sunday, April 25.The event, which runs from 1 to 4 p.m. is the only event of its kind in the United States, says Howard W. "Hoddy" Hanna III, president and chief executive officer.Participants can register to win $2,004 toward the closing costs of a house, Hanna says. Tours from each of Howard Hanna's offices in greater Pittsburgh, its Youngstown, Ohio and Erie, Pa., markets, as well as southern New York and northern West Virginia, will be available for those interested. Homes from each of Smythe, Cramer's offices in greater Cleveland will also be available. Open houses will feature all price ranges and styles, including new construction. Loan officers will be available to help pre-qualifying buyers and answer questions about financing.Hanna stated, "Sunday, April 25th, will be the biggest day in American real estate with our company hosting more than 4,000 homes open for the viewing public. These properties will range from one-bedroom condominiums, to farms, to townhouses, to estates and all styles and prices in between. Hanna Financial Services will have mortgage loan officers approving loans for prospective buyers right in the homes and at all our office locations. It will be a spectacular day!"Howard Hanna Real Estate Services and Smythe, Cramer Co. form the ninth largest full-service real estate company and the fourth largest privately held real estate company in the United States. It is a full-service company that specializes in residential and commercial brokerage services, mortgages, closing and title insurance, home building and land development, appraisal services, insurance services and corporate relocation. The combined company has 105 offices across Pennsylvania, Ohio, New York and West Virginia, and employs more than 3,000 sales associates and staff. Visit www.howardhanna.com or www.smythecramer.com."