Verified record
One Source Construction is a Southborough general contractor built for MetroWest additions, kitchens and bathrooms — and it comes with a paper trail few small remodelers carry: an active Massachusetts home-improvement-contractor registration, active state Woman Business Enterprise and Minority Business Enterprise certifications good through February 2027, and a website that lists DCAMM prime general-building certification for public and commercial work alongside OSHA and REAPP credentials. Its written record is a run of five 5-star Houzz reviews, all from 2018. The most detailed, from May 2018, describes a homeowner who had "all but given up hope of finding a contractor" before hiring the company for a structural addition — extending a half-floor above a garage — and specifically praised its cost estimates, change-order handling, and having licenses, insurance and a proper contract in place before work began. An October 2018 review credits project manager Todd Uminsky and site manager Steve Wass with a kitchen finished on time and on budget, calling the communication throughout "fast and easy." Three more 2018 reviews echo the same pattern — a bathroom done at a fair price and pace, a crew that kept clients posted on timelines, cost changes and subcontractor visits, and a repeat referrer who called the workmanship and responsiveness consistently strong. Since every account on file dates to 2018, it's worth asking for references from a more recent project before signing a contract.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from One Source Construction, LLC. 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
Tony has been a pleasure to work with. He is very responsive, got the work done in our bathroom at a reasonable time and price! We will work with him again!!!
We love our new kitchen and I would recommend Todd Uminsky and our project site manager Steve Wass to anyone. We were on time and on budget, communication was fast and easy throughout and all of the work was done beautifully. Steve was really concerned about getting things done right and extremely responsive to any questions or problems we had, and was a pleasure to work with. Thanks so much!
Entire crew was courteous and professional the entire length of the project, always keeping us up to date on timelines, unexpected cost changes, when subcontractors would arrive, etc. Work was top notch.
Extremely professional in every detail. Look no further! I had all but given up hope of finding a contractor to do a modest structural improvement to my house (extending an existing half-floor above my car bays). Out of a large number of contractors listed on various web sites, One Source was the only company I found that has everything in place: reasonable and intelligent estimate of costs and reliable and consistent change orders as requested or required; legal details (all licenses and insurance certificates in the right names and immediately available and a legitimate and fair contract); subcontractors (ready and available to come, return and meet reasonable schedules); construction knowledge (made key suggestions to improve the final result with obvious understanding of the project's needs for a phased home improvement); online invoicing and payment; and timely securing of permits and inspections. I am an extremely demanding customer, and One Source Construction provided as close to a perfect construction experience as I could expect. Moreover, they are nice people to work with. They will be my only call when I'm ready for this project's next phase!
I have referred Once Source on various occasions and their work and professionalism is outstanding. Great workmanship, very responsive to client needs. Solid General Contractor for residential applications
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Aug 8, 2026.
Kitchen ceiling repaired after water damage4.9
Load-bearing wall replacement with steel girder4.6
Two-tier deck redone around a pool4.3
Accessible room built over a garage4.6
56 years in businessNot yet rated
