• MLS# OLRS-0036805ID
  • Townhouse
  • Beds: 6
  • Baths: 5
  • Built: 1901

Combining development and brokerage, Mark is responsible for leading the development and sale of over $175 Million of real estate transactions primarily in NYC, Greenwich CT, and New Zealand. Build Me a Brownstone has been building, restoring, and renovating homes since 1999.


With over $45,000,000 in ground up construction, with experience using modular and precast construction, historic Brownstone restoration and residential renovations, Build me a Brownstone has been recognized by the HOBI Awards and Press in Life and Leisure, Remix Magazine, Huffington Post, and Home Style Magazine.


Prior to real estate, Mark founded and built Network Dynamics Inc. in 1986, an Executive Search and Consulting Business headquartered in NYC with 16 employees and over 150 contract consultants on staff with clients such as IBM, EDS, and Merrill Lynch. This was sold in 1999 and launched into residential development and brokerage. Graduate of Iona College in New Rochelle, NY.


Were always growing our team.

Courtesy of MARK O'BRIEN DEVELOPMENT LLC

  • Garden
  • Pets: Yes

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RLS IDX data and RLS VOW data display by Sherman NYC – Manhattan & Riverdale

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