Delivering The Finest Homes on the East End
Mark Lumley Builder constructs custom homes and leads major renovations across the Hamptons and the East End of Long Island. We work alongside architects and owners from the earliest stages of every project — before the plans are finalized, before the ground is broken — and we stay involved through completion. It is that depth of involvement, from pre-construction through delivery, that determines how a home performs and how long it lasts.
Custom Homes Taking Shape on the East End
No two projects are alike. What stays consistent is the process behind them — the early conversations, the pre-construction research, and the hands-on involvement that carries through from the first site walk to final delivery. Below is a look at two custom homes currently under construction by Mark Lumley Builder.
Shelter Island | Architect: London A+D
10,000 Sq Ft Main House | 2,500 Sq Ft Guest House
2 Car Detached Garage | Pool
Shelter Island | Architect: A+M+L Architecture
Interior Design: Stephens Design Group
Landscape Architect: Edmund Hollander
10,000 Sq Ft Main House | 2,500 Sq Ft Guest House
2 Car Detached Garage | Pool
Tennis Court & Pavillion
Shelter Island | Architect: A+M+L Architecture
Interior Design: Stephens Design Group
Landscape Architect: Edmund Hollander
10,000 Sq Ft Main House | 2,500 Sq Ft Guest House
2 Car Detached Garage | Pool
Tennis Court & Pavillion
Two Decades of Custom Construction on the East End of Long Island
Mark Lumley Builder has been constructing custom homes and leading major renovations throughout The Hamptons and the East End of Long Island for over two decades. Our team guides every project from first conversation through final walkthrough. That continuity, and the deep knowledge it builds over time, is what our clients rely on.