Verified record
No state license for this trade. New Hampshire doesn't license or register general contractor / remodelingbusinesses, so there's no state registry to check. That's true of every general contractor / remodeling business in the state, not a mark against this one. Insurance is self-reported.
- A+ BBB ratingAccredited business
- 2 reviews in the last 6 monthsNo negatives
- 19 customer photosOf completed work
Highlights
- An early siding finish — a 2026 customer said it finished almost a week early
- A finished basement — a recent customer says 820 square feet became a finished level
- A pest issue flagged — a 2023 customer said Derek told them at once
AlphaCon Building Group is a Hudson, New Hampshire general contractor, per its BBB profile, and a recent Google customer says it turned 820 square feet of unfinished basement into a finished level with a family room, office, home gym, 3/4 bath, bar nook and storage room. The company's website says it is family-owned, led by owner Derek Leclair, and has provided home building and remodeling services for more than 30 years. It names Windham, Bedford, Hudson, Pelham, Nashua, Hollis and Salem in its service area. A recent customer says Derek and Noah were easy to work with on a small ADU that was completed on time and on budget. In a 2026 review, a customer said Alphacon committed to a finish date on new siding and completed all the work almost a week early. A 2026 customer said Derek and his team replaced all the windows in their front office. In a 2025 review, a customer said Derek explained the different roofing materials and options before AlphaCon replaced their roof, and checked in after the project was completed. A 2025 customer said Alphacon did their 2nd-story, 12x16 composite deck, and that the crew cleaned up after themselves at the end of each day. A 2024 customer said AlphaCon turned a 3-season porch into an all-season sunroom, and that Derek made the adjustments needed to comply with building codes. In a 2023 review, a customer said they hired AlphaCon to help build their new home, and that Derek helped them choose a lot. That 2023 customer said the lawn did not come in well late in the season and that Derek said he would come back in the spring. In a 2023 review, a customer said Derek noticed potential pest issues while replacing a window and told them at once. A 2023 customer said the company did a complete remodel of a house while they lived 80+ miles away, and finished early. In a 2019 Houzz review, a customer said AlphaCon built a 24x24 carport with an attached canopy.
What does a remodeling project cost in Greater Nashua?
Typical your area range for this kind of work, from regional averages — not a quote from AlphaCon Building Group 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
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