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Mark has been actively engaged in the real estate business in the New York Metropolitan area and Connecticut for over fifty 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 First Service) 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 the New York metropolitan area.

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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 forty 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 400 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 Greenbergs to rescue animals.

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In 2014, Mark Greenberg was the Republican nominee in the 5th Congressional District, devoting much time and effort and personal funds to share his considerable business expertise with the country.

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Mark is both a ski-racing  and soccer Dad in his spare time spending considerable time following his kids to the race mountains and the soccer tournaments. The love of soccer has led him to build a 95,000 square foot soccer facility called Day Hill Dome (www.dayhilldome.com) which is located in Windsor Connecticut.

 

Most recent acquisitions include 500 Day Hill Road, Windsor, approvals for 300 apartments and 18,500 square feet of retail space, 1 Targeting Center, Windsor, approvals for 200 apartments and 7,000 square feet of retail space, 1 Griffin Road, Windsor, an office building containing 450,000 square feet, and 82 Hopmeadow Street, Simsbury, an office building containing 220,000 square feet and development land.