Atkinson basement finishing — local context
In Atkinson we dry the basement before we finish it. The town sits in a pond-fed corner of Rockingham County — drained west by tributaries of the Spicket River and east by the Little River (both run to the Merrimack), and it shares the 532-acre Big Island Pond with Derry and Hampstead (Wikipedia; GPS Nautical Charts). That high water table is why our basement finishing work starts with the Forever Dry System, not drywall. Then the finishing facts: we charge $30,000–$200,000 depending on scope, run a single crew, and finish a typical job in 4–24 weeks. We pull the building permit ourselves through Atkinson's Building Inspector, Brian Boyle, at 19 Academy Avenue (Town of Atkinson). Adding a below-grade bedroom triggers IRC R310 — a 5.7 sq ft egress opening — so an egress window ($8,000–$15,000) is part of the plan. On Atkinson's $555,200 median home value (ACS 2024), finished square footage compounds.
What a recent customer said
"We had a wonderful experience working with 603 to have our basement finished. From the initial walk down with Chris to through the project execution phase. Ray and his crew were fantastic, communicative, hardworking, and great attention to detail. Their pricing was competitive and quality was exceptional." — Kristen Youcis, 5★
Frequently asked questions
Do I need a permit to finish my basement in Atkinson, NH?
Yes. Permits are issued locally by the Town of Atkinson Building Inspector & Code Enforcement office — Brian Boyle, Town Hall, 19 Academy Avenue, Atkinson, NH 03811, (603) 234-0721. 603 Basement Solutions pulls the building permit for you; you don't file it yourself.
Can I put a bedroom in my finished Atkinson basement?
Yes, but it must meet egress code. New Hampshire enforces IRC R310 (2018 IRC, adopted statewide under RSA 155-A), so every below-grade sleeping room needs an emergency escape opening of at least 5.7 sq ft net clear, minimum 24 inches high and 20 inches wide, with the sill no more than 44 inches above the finished floor. That usually means adding an egress window ($8,000–$15,000).
Why does my Atkinson basement take on water before finishing?
Atkinson is a high-water-table, pond-fed town — it drains west by tributaries of the Spicket River and east by the Little River (both to the Merrimack) and shares the 532-acre Big Island Pond with Derry and Hampstead (Wikipedia; GPS Nautical Charts). That's why we waterproof with the Forever Dry System before any finishing work begins.