Verified record
Forty-two permitted projects sit behind Hampden Design + Construction on BuildZoom, which scores the Newton firm 95. It is David Cohen's company — his site says he founded it in 2003 and still leads it as principal — and it builds custom homes, renovations and additions rather than small repairs. Its Massachusetts home improvement contractor registration is active, held by the corporation itself. The company's site also says Cohen is a licensed construction supervisor and a licensed building inspector. The written accounts run 2014 to 2019, and what they have in common is money talk. A May 2014 Houzz reviewer called the bidding process transparent and the price competitive with comparable contractors, and said the finished work came in on budget. A second Houzz review that same month described a remodel plus an addition and praised the crew for being on time and knowing their craft. The 2019 account is unusual: it came from the architects on a Boston Commercial Wharf condominium renovation, who wrote that David and his team were easy to work with from start to finish and laid out pricing options. That is a design professional's view of how the firm runs a job, which is worth something on a custom build where a builder and an architect have to get along. Houzz carries nine sets of project photos if you want to see finished work first. For a Newton-area homeowner planning a custom house, a gut renovation or an addition, Hampden fits the kind of job that needs one contractor managing the whole arc. Ask for references from projects completed in the past year or two, and get the construction supervisor licence number and a certificate of insurance in writing before you sign.
“Hampden Design + Construction, led by the homeowner’s brother, David Cohen, stepped in for a special home renovation project.”
We worked with David Cohen, Hampden Design+Construction, on a Boston Commercial Wharf condominium complete renovation project. We were the Architects for the project. From start to finish, David and his team were very easy to work with. They provided pricing and pricing options to the Owner to save money. The Owner delayed the project for over a year and David and his team hung in there the whole way. The final build out was beautiful and was published in Boston Home - November 2019 magazine. Great job ! - I highly recommend Hampden Design+Construction and hope we can work with them again in the future. Clear Creek Architect P.C.
Dave Cohen (Hampden Design) is simply the best contractor I have ever used. He is professional, reliable and honest. The bidding process was transparent and his price was competitive with other comparable contractors. His end work product was spectacular and on budget. When a few problems arose, he came back to solve them, long after the job was done and fully paid. I would not even consider using a different contractor for my next project and I recommend him strongly and without reservation.
We hired Hampden Design and Construction to remodel and add an addition to our home. Dave Cohen and his crew did a fantastic job. They are professional, dedicated, on time quality work. Their knowledge and craftsmanship are exceptional. From the initial planning through to the end details they were thoughtful, thorough and on budget.
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1 change recorded — last scanned Sep 8, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Hampden Design & Construction. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$23,000 – $35,000
Typical remodeling project around $29,000
Energy retrofit expertise5.0
Named project managers4.8
Custom built-ins4.2
Bathroom renovations3.4
Repeat clients across 5+ years4.4
Hospital renovation project3.2