Verified record
Colburn & Grove Custom Construction is a two-man outfit -- literally, both named Rob -- based in Dunstable and building additions, kitchens, and custom carpentry around Groton and greater Boston. Robert Colburn and Robert Grove met working on high-end custom homes in Boston and Concord before starting the company together, bringing more than 35 years of combined building experience with them. The story that keeps repeating across their Google reviews is the same one: homeowners hand them something ambitious -- a full first-floor gut renovation, a deck turned into a four-season room, a 30-year-old kitchen gutted and rebuilt in three weeks -- and they deliver it on schedule with finish work that gets specifically remembered. One customer describes Rob planing reclaimed beams into a custom firebox liner for a design they'd never built before; another recalls him chasing down the right stone slab to match a backsplash. All 11 of their Google ratings are five stars, spanning 2024 through mid-2026, and several homeowners came back to hire them again for a second project. Reviewers keep mentioning money and schedule transparency -- regular updates on where a project stood financially, work finished on time and within budget, subcontractors showing up when promised. An interior designer who works with contractors regularly singled out their attention to detail and timeliness. Their Houzz profile lists a home improvement license number (065-650) and confirms the same Dunstable address and service list -- additions, kitchen and bath remodeling, decks, and custom carpentry -- though that number hasn't been independently verified against the state registry, so it's worth asking to see current proof before signing anything. The Houzz page also shows three project photos but no reviews yet, so Google is really where their track record lives. For a homeowner planning a real renovation -- an addition, a full kitchen, a four-season room -- rather than a quick fix, Colburn & Grove looks like a solid call: confirm current licensing and insurance directly, get a written schedule and payment plan, and use their own project photos and past clients to get a feel for finish quality before committing.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Colburn & Grove Custom 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
Rob and Rob (and Randy!) were wonderful for our 1,500 sq ft first floor gut renovation including kitchen remodeling. The team was fast, efficient, kind, provided high quality workmanship, and fun to talk to generally. Two stand outs: reused beams to plane 1” liner for custom firebox next to fireplace - worked with me to go with a design they hadn’t seen but executed flawlessly, second was extra effort Rob put in to get the right stone slab for our backsplash - he followed up a bunch of times with stone place to get it right going above and beyond. We are certainly having them back for next round of projects - great guys all around and recommend them!
Rob, Rob, and Randy are truly exceptional! They take immense pride in their craftsmanship, and their communication throughout every stage of the project was outstanding. What started as transforming our deck into a beautiful four-season room quickly became so much more. As someone who can be a bit indecisive, I asked if they could also build a three-season porch beneath the deck. They were incredibly accommodating and went above and beyond to bring my vision to life. Their level of skill is nothing short of remarkable. One of the biggest challenges was building the four-season room around our kitchen vent. Another contractor had previously told us it couldn't be done and that the room couldn't extend beyond the vent. Colburn & Grove never hesitated—they simply found a solution. Their creativity, expertise, and confidence in their craft were truly impressive. Beyond their incredible workmanship, Rob, Rob, and Randy were an absolute pleasure to have around. They were professional, hardworking, kind, and genuinely great people. By the end of the project, we had not only a stunning new living space but also friendships we truly value. We couldn't be more grateful for the outstanding work they did. We'll miss seeing their smiling faces first thing in the morning, but we'll enjoy the beautiful spaces they created for many years to come. Thank you, Rob, Rob, Randy for making our dream a reality! 🤗💗🤗 Laura & Michael Ps. Photos coming soon!!
As an interior design professional, we work with a lot of contractors and I cannot say enough great things about the Colburn & Grove team. Their craftsmanship, attention to detail, and timeliness were 2nd to none, and I am so proud of how our collaborative project turned out. They do beautiful work, and I can't wait for The Freshmaker and C&G teams to work together again!
Top notch service and quality. Very responsive and willing to spend the time to answer questions. Always on-time! They did exactly what they promised and weren’t satisfied until we were satisfied. We love the finished product and would highly recommend Colburn and Grove!
These guys are great to work with. Their combination of creativity, skill, and dedication were key to the success of our recent projects.
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2 changes recorded — last scanned Sep 8, 2026.
Detailed craftsmanship5.0
Renovates century-old structures5.0
Detailed workmanship5.0
Bathroom & kitchen remodels4.9
Basement finishing3.5