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NH Custom Builder describes itself as an Amherst, NH building company that builds custom homes and takes on whole-home renovations, additions, kitchen and bath remodels and selective commercial construction across southern New Hampshire. Its website names Steven Desmarais as owner and Dave Hanlon as co-owner. The About page says the company has served Amherst and the surrounding towns since 2018, while the site's schema.org description says since 2011. A recent Google reviewer, writing as someone who has been in the construction business, says they have worked with the firm's crews many times on residential and commercial properties, on both new construction and renovation. A recent customer had high expectations on detail and quality for an outbuilding and says the team exceeded them. On r/newhampshire, a commenter wrote that if you're near Amherst, NH Custom Builder are great. A 2019 customer said Dave Hanlon and his team took on a job at their home that was the result of another company's bad contracting work, and did it in a way meant to be as unobtrusive as possible. A 2019 customer said Dave kept constant contact, stayed on the subcontractors to move the project along, and that his team kept the job site clean. A 2017 customer said they hired Dave and his team to renovate two bathrooms and build a custom pergola for the back yard. A 2017 customer said Dave did the finish work on their master bathroom and finished the job 2 weeks early.
Typical your area range for this kind of work, from regional averages — not a quote from NH Custom Builder. 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
“If you’re near Amherst, NH Custom Builder are great”
Any friends or members of our Souhegan Valley Communities that are considering building or remodeling commercial or residential properties, we would, without question, recommend NH Custom Builders. We have had numerous opportunities to work with the crews at this firm, on both residential and commercial properties, new construction and renovation work. They treat your project as though it was being built for themselves. They can definitely understand your vision, can communicate their understanding of your vision, make recommendations for potential improvements, and are able read your plans and specifications to complete any project perfectly. Having been in the construction business ourselves we are a client who "wants what we want" and doesn't want anyone cutting corners. NH Custom Builders crews are the Best!
I had high expectations regarding attention to detail and quality of work for an outbuilding. The team at NH Custom Builder definitely exceeded those expectations
Good group of guys here! Highly Recommended.
We had a situation at our home that was the result of some (other company's) bad contracting work. Dave Hanlon and his team came in and did a job that few would touch and went the extra mile to do it in a way that was as unobtrusive and disruptive as possible. The entire team was respectful of us and our home and they did their work diligently and well. We are so thankful that we found them and can confidently recommend them for your house building or improvement needs!
I have done a lot of projects over the years with many different contractors and have never been 100% happy, its either lack of communication, lack of completion, or just poor craftsmanship. Dealing with Dave on this project has been none of the above. He has kept constant contact, always replies when i have questions, and stays on the sub contractors to move the project along. His team has done an amazing job keeping the job site clean, and with great attention to detail. When there is an issue Dave is on top of it and finds the solution to make it right. I would highly recommend the NH Customer Builder Team!
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2 changes recorded — last scanned Sep 30, 2026.