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In an April 2025 Google review, a customer wrote that Dow Construction completely renovated their kitchen in Bartlett, NH, in 2024, and that Colton Dow, whom they name as the owner, met with them multiple times during planning to discuss every detail. Dow Construction is based at 66 Main St in Conway, NH, describes itself on its website as a home builder dedicated to craftsmanship, sustainability and lasting value, and holds 4.7 stars from 18 Google ratings. In a January 2026 Google review, a customer wrote that they worked through their condo renovation largely remote and that Colton and team hit their timeline so they could spend the holidays in their new home. An April 2025 reviewer wrote that they decided to finish their basement with no idea where to start, and that Colton managed all of the subcontractors for them. Another April 2025 reviewer, who lived two hours away, wrote that Colt took on a three season porch under a metal roof with varying angles that other contractors had balked at, sent pictures and called for clarification, and finished when promised at the agreed price. In a June 2025 review, a customer wrote that Colton was their contractor for a rainwater catchment system, diagnosed problems that arose from the engineer's design, and arranged a no-cost repair of a manufacturer's defect in the cistern. A June 2025 reviewer wrote that a job to repair rotted trim board uncovered water damage and structural damage from carpenter ants, and that Colton's crew persevered as the scope changed. In a May 2026 Google review, a customer wrote that they had worked with Colton since last summer and were finally breaking ground on their build. A May 2026 reviewer wrote that Colton and his crew had done several projects at their lake house, from custom projects to a storm door installation. In a one-star May 2026 Google review, a customer wrote that Colton's crew framed a two car garage addition with a large living area above and was about to start siding when they were pulled off never to return; the reviewer wrote that Colton framed multiple windows and garage doors wrong, that a letter from his lawyer told the reviewer not to contact him directly, that they hired a crew out of Boston to finish, and that he still owes them $5000. In a one-star April 2026 review, a customer wrote that they hired Colton Dow, that he sent over a guy who had no idea what was going on, and that the work cost them money to fix.
Where do I begin..? I had a business plan with Colton for months to put a two car garage addition onto my house with a large living area above. His crew, which were extremely hard working guys with amazing brains brought my project to a point of the framing aspects completed and were just about to start siding when they were pulled off never to return. Colton then continues to lie to me and reassure me that they would be back on multiple occasions and continued to change the date. Finally he lied and blamed the hold up on the fact that the lead Carpenter didn't like me.. the true reason is Colton himself showed up for a few days and framed multiple windows and garage doors wrong. When I said something about it to him he had his crew fix his mistakes and ran away angry. I finally sent him a message to speak man to man only to receive a letter from his lawyer telling me not to contact Colton directly anymore. I then had to hire a crew out of Boston to finish my project. Colton is a complete scam artist that has never actually built a home with his own hands in his life. And don't let his sleazy smiled project manager father fool you either. Do not give your money to this guy he still owes me $5000
We have been working with Colton at Dow Construction since last summer and are finally breaking ground on our build. Throughout the entire process he has been thorough, attentive, responsive, and very knowledgeable. He has taken the time to answer our questions and has been especially helpful with the things that are important to us. We’ve had a great experience so far and would absolutely recommend him to anyone looking for a builder.
Colton and his crew have done several projects at my lake house, ranging from custom projects to standard storm door installation. For the custom projects, Colton was super helpful generating ideas for design. He does a great job of listening and understanding what I wanted and then talking it through to the best solution. His work is top quality, and I couldn’t have asked for better workmanship. He finished projects on time and on budget and always communicated clearly throughout on progress. Two thumbs up with no hesitation!
Did a terrible job. I hired Colton Dow and he sent over a guy who had no idea what was going on. Did a terrible job and cost me money to fix. Colton doesn't actually work he just sits a home collecting clients money and has guys come mess your house up. I'll never use him again.
Simply put, we made the right choice in working with Dow for our condo renovation. Colton and team were excellent in all aspects including project management, communication, managing budget, working through changes/issues, quality of work, and importantly, hitting our timeline so that we could spend the holidays in our new home. We worked through our renovation largely remote, and from the start it was clear that we had a trustworthy and knowledgeable partner that could achieve our vision and help us make good decisions along the way. Highly recommend.
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2 changes recorded — last scanned Oct 30, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from Dow Construction. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$20,200 – $30,800
Typical remodeling project around $25,500
