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Typical your area range for this kind of work, from regional averages — not a quote from White Birch Builders, Inc.. 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
A 14-by-16-foot living room addition is one of the projects White Birch customers describe. In a June 2026 Google review, the homeowner credited Marie and Dennis with being transparent and accessible throughout that work, including for small needs. White Birch says it designs and builds custom homes, develops small communities, and handles additions and remodeling across southern New Hampshire. Its website identifies Merrimack as its base and Marie and Dennis Zibolis as its owners. The company says it has crafted custom homes in southern New Hampshire for more than 30 years and helped hundreds of homeowners build. Its stated service area includes Merrimack, Nashua, Hollis, Litchfield, Amherst, Londonderry and Moultonborough. BBB dates the corporation's start to 1988 and lists an A+ grade and accreditation since August 2016. Another June 2026 Google reviewer described a custom home build, saying the team responded to questions, communicated clearly when changes arose, stayed on top of the budget and delivered on schedule. A customer writing in May 2026 about their first custom build singled out Marie for support, guidance and responses to texts at any day or time. That reviewer said they still kept in touch with the contractors four years later and continued using their carpenter, tile installer and painter for ongoing projects. In a December 2025 review, a homeowner described adding a breezeway, a two-car garage with a room above it, and a workshop behind it. They praised communication, schedule, budget and quality, said problems arose but were resolved, and would bring the builders back for another project.
“Cant say enough good things about White Dick Builders.”
We added a 14x16 living room addition to our home. Marie and Dennis were so helpful all the way through. Very transparent and accessible for even the smallest needs throughout our project. They are extremely knowledgeable about all aspects of building. One of the only contractors I would trust in the area. Will definitely use again!
White Birch is an exceptional builder with a truly talented team of craftsman. They not only met but exceeded our expectations in building our custom home. Throughout the process, they were responsive to all our questions, communicated clearly whenever changes arose, stayed on top of the budget and delivered on schedule. I cannot recommend Marie and Dennis highly enough.
I can’t recommend this builder enough! I worked with Marie and Dennis for my first custom build, and they were wonderful to work with. They are super responsive and were beyond helpful throughout the entire process. I feel really lucky to have had Marie to lean on for support, guidance, suggestions and just about anything at nearly every hour of the day. I could text her any day or time of the week, and she would respond. Even now! All the contractors were great, and I still keep in touch with them now too, 4 years later! I use my carpenter, tile installer, and painter regularly for ongoing projects. I fully trust White Birch and would recommend them to anyone. This is a family business, so they actually care and you build a relationship with them. They take the time to help me understand all my options and ensure I’m happy with everything. If I were to do any build or project again, I wouldn’t go with anyone else.
We added a breezeway, two car garage with a room over it and a workshop behind. Communication, schedule, budget, quality were all top notch.I was happy with all the subcontractors that came through. There were the inevitable problems, but they were all resolved to my satisfaction. They treated our addition like it was their own house. I trust these guys, and would bring them back for another project, no question about it.
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2 changes recorded — last scanned Sep 30, 2026.