Long Island's Custom Home Builder

Design-build simply means the people who design your project and the people who build it work for one company, from the same budget from day one.

In the traditional approach, homeowners pay an architect to draw plans, then bid those plans to contractors, and too often discover the design costs far more than expected. Months are lost redrawing. With Keystone's design-build approach, budget, design, engineering, and construction reality are on the table together at the first meeting. The plan you fall in love with is a plan you can actually afford to build, and the company that promised the number is the one swinging the hammers.

It also matters for the paperwork. Long Island towns each have their own permit applications, zoning rules, and inspection sequences. Because we design with those requirements in mind, our plans move through building departments faster, and you are never left coordinating between an architect in one office and a builder in another. Add in our in-house HVAC, plumbing, and electrical trades, and every decision, from where the ductwork runs to which wall holds the panel, is made once, correctly, under one roof.