Square One Development Group builds and renovates architect-led homes for clients in McLean and across Northern Virginia — award-winning work, on demanding sites, executed with discretion.
Estate-scale design in Northern Virginia.
McLean’s wooded, often sloping lots and estate-scale ambitions call for a builder comfortable with complexity — hillside foundations, structural glass, dramatic cantilevers, deep lower levels, and the integrated systems a contemporary home of this caliber demands. That is precisely the work we’ve built across Virginia, and the standard we bring to McLean.
Wildcat Mountain and Liminal House are both Virginia homes and recipients of International Architecture Awards. Blue Ridge House, designed by Tom Kundig of Olson Kundig, is a steel-framed home over the Virginia valley — board-formed concrete core, cantilevered wings, and a moving glass wall — published in Dwell. Together they show what we bring to ambitious Virginia sites.
The most valuable work happens before a wall goes up. Engaging early in preconstruction, we protect the design and the budget; through construction, an open process keeps you informed; and after move-in, Square One Care keeps the home performing. See the full approach on our custom homes page.