Square One Development Group builds and renovates architect-led, estate-scale homes for clients in Potomac and across Montgomery County — the kind of singular residences that reward a builder of the highest standard.
Room to build something singular.
Potomac’s larger, often wooded lots invite ambitious, ground-up custom homes — and the complexity that comes with them: grading and drainage, deep basements and lower-level program, pools and outdoor structures, and the long-span, light-filled spaces clients want today. This is the kind of work we specialize in: difficult sites and demanding details, executed without compromise.
Our homes have earned national AIA honors and International Architecture Awards and been published in Dwell, Interior Design, and Architectural Record. We bring that same standard to estate-scale work in Potomac — new construction and whole-house renovations alike. Nearby, in Bethesda, we built Jigsaw, the recipient of a national AIA Institute Honor Award. Explore the full portfolio for the range of what we build.
Estate projects reward early involvement. Engaging in preconstruction, we partner with you and your architect on estimating, value engineering, and phasing so the design survives the budget. And when the home is complete, the relationship continues through Square One Care. See our full approach on the custom homes page.