Rittenhouse Realty Advisors is now GREA Mid-Atlantic. GREA Mid-Atlantic is a Philadelphia based real estate advisory firm with an extensive focus in the brokerage of multi-family communities throughout the northeast region of the United States. We stand for uncompromising integrity and respect. Our tightly integrated conflict-free approach and superior client service puts our clients’ best interests first ensuring every transaction supports our clients’ real estate objectives. With this approach we build on our ability to create enduring, long lasting, trusting relationships and true partnerships.