The Washington Office of Berkshire Hathaway HomeServices The Preferred Realty is located in the heart of the City of Washington.  Open since 1999, the office has successfully helped clients in Washington, Greene, Fayette, and Allegheny County move in, out, and around the area for over 20 years.  With a reputation of excellence in customer service, The Preferred Realty offers full-service real estate solutions that cover every step of the home buying and selling process.