Mark offers a luxury real estate experience serving NYC, with over 25 years of residential development, sales, and brokerage experience.
Combining development and brokerage, Mark is responsible for leading the development and sale of over $375 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 $65 million 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.
We’re always growing our team.
I am lucky enough to have a beautiful family of five children. We love to adventure, travel and explore new cities. Adventure is in the O'Brien blood, so we picked up and moved to New Zealand. Coming from New York City and Greenwich, CT, we appreciated the vastness of New Zealand and welcomed the change of pace. Although New Zealand will always have a place in my heart, New York City will always be my home. All of my ventures have been inspired by my children... maybe even the vodka.
With over 30 years of experience in New York City, Mark O’Brien Real Estate understands the subtle nuances of each neighborhood. Discovering hidden gems is our passion, and we’re dedicated to creating real value for our loyal clientele.