Mark O'Brien Development
A 400 SF tree house perched 20 feet high built on three trees for my 5 kids. Complete with spray foam insulation electricity, three walk out terraces, vermont wood burning stove and glow in the dark stars on the ceiling.
Mark O'Brien had his development career as a licensed New Home Builder in Greenwich Connecticut since 2000, building $5,000,000 modular homes using all modular construction, from multi home subdivisions to Brownstone restoration. Working extensively with a wide range of Engineers, Architects and contractors to navigate the complexities of NYC's Department of Buildings and deliver on time and on budget. From multi home subdivisions to Brownstone restoration. Mark O'Brien Development is responsible for over $100,000,000 in property development including, home renovation to ground up development.