Highly functional architectural design.
Turn-key general contracting service.
High-end, sustainable, full-home renovations and new construction.
Our working relationship:
We establish the client as the executive decision maker to take their home from concept to completion.
Meet clients goals for form, function, and budget.
Jeffrey McMahon Design & Build, LLC works extensively in New York City, Philadelphia and upstate and is a licensed and insured general contracting company.
Check out our recent feature in the New York Times, here:
Renovating a Rental with the Future in Mind
"Jeffrey's work was exceptional in every way -- the planning, the communication, the execution and follow through. I have worked with (and for) many contractors and builders; Jeffrey and his team are better than anyone else with whom I've had contact. The level of attention to detail and professionalism that he elicits from his team is the best I've seen. All this said, however, the aspect of Jeffery's work that most stands out is his artful, elegant design."-Luke Massie
"Jeffrey has excellent taste, and is always considerate of the environment, of the locale and of the aesthetic."-Jamie B.
"Jeffrey McMahon is imaginative, honest, hardworking, and capable of solving complex design and engineering problems. His approach is straightforward and his staff is professional and caring. I've worked with this company on several occasions: he has transformed my house, listened carefully to what I wanted, and brought in skilled craftspeople to get it done."-NR Popkin
"Jeffrey is both highly creative and also highly efficient -- he listened to our needs and constraints, and designed solutions that were both highly functional and absolutely gorgeous."-Rona Buchatler
"Jeffrey was patient and methodical in making sure we both understood each other and that the objectives and goals of the project were clear. He consulted me along the way on all decisions big and small and the base project was completed on time and on budget (and we had a tight 3-month schedule for completion!). He and his team were super attentive, responsive, and conscientious."-Alison Besunder
"Jeffrey provided a level of expertise and guidance that has been unprecedented in my experience working with contractors, architects, or designers. He provided technical expertise on matters related to heating, flooring, insulation, furniture, and color. His style is beautiful and artistic. He is decisive in a way that makes the process painless. His sense of color transformed our house. Jeffrey hand-built our dining room table, coffee table, media cabinet, desk, and side tables using reclaimed wood and steel. His workmanship transformed our house. His work is incredible and he is an absolute pleasure to be around."-Carrie Brownstein