Long Island · North Shore & Gold Coast
Cornerstone Private Builders takes on a small number of custom homes each year — built with the materials, methods, and attention that make a house worth keeping for generations.
Start a ConversationOur Approach
We deliberately limit our work to two or three homes per year. Every project gets a principal on site, direct trade relationships, and decisions documented before the walls close — not discovered after they do.
A principal of the firm manages your project directly under a construction management model — transparent budgets, competitive trade bids, and no hidden markups buried in a lump sum.
Engineered framing where precision matters, structural blocking where walls meet, and layout standards that make tile, cabinetry, and millwork land perfectly — details spec builders skip.
Every wall is photographed before it closes. Blocking, wiring, and plumbing locations are recorded permanently, so your home comes with a record no other builder hands over.
Closed-cell insulation, radiant heat with room-by-room control, and waterproofing systems chosen for the next fifty years — not the next open house.
One trade owns each critical system, end to end. When the roofer owns every waterproofing layer, there is never a gap between responsibilities.
We build exclusively in the villages we know — their boards, their inspectors, their approval processes, and their standards.
Current Work
Photography of our current projects is being prepared. In the meantime, our portfolio page outlines the work underway.
We begin conversations well before ground breaks. If you are planning a custom home on the North Shore, we would be glad to talk.
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