Real Estate Firm Gateside Corporation Relocates To Malkin Properties’ 500 Mamaroneck Ave. in Harrison

HARRISON, N.Y. – December 9, 2011 – (RealEstateRama) — Gateside Corporation, a commercial and residential real estate development and investment company, has sold its offices in Rye, NY, and will relocate to Malkin Properties’ 500 Mamaroneck Avenue …