Mark Greenberg has been actively engaged in the real estate business in the New York Metropolitan area and Connecticut for over forty-five years. Initially, he acquired regulated rental apartment buildings and converted them to cooperatives and condominiums. In 1978, he formed Mark Greenberg Real Estate Co. Inc. (which has since been merged with Charles H. Greenthal & Co, ) a management and sales company to handle his own properties. MGRE Co. then also managed third party buildings and has asset managed many properties for lenders over the years. He still owns approximately 200 rental, co-operative and condo apartments and 25,000 square feet of retail space.
In 1989, Mark began to develop single family residential property in Connecticut. He successfully developed Greenbriar and Birchwood Estates in Litchfield County. He is still a substantial landowner in Litchfield County, where he has resided for over the past thirty five years. He also then formed MGRE CO. LLC (CT), a company which manages his Connecticut holdings.
In 1997, Mark began to acquire commercial property in Connecticut. He now owns approximately 2,000,000 square feet of retail, office, mixed use and industrial space, and over 1,000 acres of developable land in Connecticut.
In 2004, Mark and Linda Greenberg began devoting much effort to the development of a no-kill animal shelter and in 2010, after the expenditure of over $5,000,000 a 36,000 square foot shelter was built in Bloomfield Connecticut which is the culmination of a decades-long mission by the Greenberg's to rescue animals.
In 2014, Mark Greenberg was the Republican nomination in the 5th Congressional District, devoting much time and effort and personal funds to share his considerable business expertise with the country.
Mark is a soccer Dad in his spare time spending considerable time following his kids on the Rush circuit in Connecticut and is on the national Board of Directors for Rush. This love of soccer has led him to pursue a 100,000 square foot soccer facility which will be located in Windsor Connecticut.