Renovation costs and rules, city by city in New England

We publish a city page only after we've written the local permit authority, contract law, housing stock, and cost math for it — so every page below reflects that specific market, not a national average with a city name swapped in.

Kitchen remodeling

A full kitchen remodel replaces cabinets, counters, appliances, flooring, and lighting, and usually touches plumbing and electrical. The spread between a modest refresh and a gut renovation with a moved wall is the widest of any room in the house.

Bathroom remodeling

Bathrooms are small but dense: plumbing, waterproofing, tile, ventilation, and electrical all land in a few dozen square feet. Cost per square foot runs higher than almost any other room, and the difference between a good and a bad job is mostly invisible waterproofing work.

Home addition

An addition is new construction attached to an existing building, which means it carries every trade at once plus the hardest part — tying new structure, roof, and systems into old ones that were never built to current code.

Basement finishing

Finishing a basement is the cheapest new living space most houses can gain — but only when moisture, egress, and ceiling height are handled first. In New England the pre-work (water management and code headroom) is what separates a basement that lasts from one that gets gutted after the first wet spring.

Whole-home renovation

A whole-home renovation is several projects run as one: kitchen, baths, systems, and finishes under a single schedule and a single contract. The savings versus doing rooms one at a time are real — but so is the planning burden, and the bid comparison problem is harder than for any single-room job.

Deck

A deck is the most permit-sensitive outdoor project a homeowner takes on — footings below frost line, ledger attachment to the house, and railings are all inspected, and all three are where cheap bids cut corners. In New England the frost depth alone separates a real bid from a guess.

Garage

A garage addition is a small building with a full-size permit process: zoning, setbacks, foundation, framing, and often a driveway and electrical service decision. Attached garages add a code fire-separation requirement that detached ones avoid — a fork in the design that changes both price and approvals.

Sunroom

A sunroom sits between an addition and an outdoor project, and the price swings with one decision: three-season or four-season. A four-season room is an addition in every sense — foundation, insulation, HVAC, and full code compliance — while a three-season room skips most of that and gives up winter use.