ADU builds, excavation, zoning, septic, and commercial construction in Maine and New Hampshire. Published accessory dwelling unit prices are on the ADU model list.
LD 2003 is no longer the whole Maine story. LD 1829 (2025) and LD 2173 (April 2026) change density, sprinklers, and town deadlines. NH HB 577 (effective July 1, 2025) requires attached or detached ADUs by right.
ReadReal 2026 pricing for turn-key ADU builds in Maine and New Hampshire - The Bean starts at $147,000; The Ossipee starts at $388,000. Ten published models.
ReadTen turn-key models $147,000–$388,000, with the plan, the size and the figure published together.
ReadLakes Region ADU builds from the West Newfield crew. Ten published models $147,000–$388,000. Wolfeboro, Ossipee, Alton, Laconia.
ReadWhat clearing a lot in southern Maine or New Hampshire actually involves, what changes the price, and why a per-acre figure is the wrong thing to shop on.
ReadA factory price and a turn-key price can look alike until the ground is priced. Here is what to check in either quote before you sign.
ReadThe Maine numbers that are published here, the reason there is no New Hampshire starting price, and what decides which system your lot needs.
ReadMaine's ADU legislation requires municipalities to permit accessory dwelling units on most residential lots. Here's what it means for your property.
ReadWe do not publish verified owner rents. Starting prices for the ten models are on this site. Rent, vacancy, taxes, and financing are a separate conversation.
ReadErosion and sediment control belongs in the site plan. This page does not publish a certificate number. Ask what applies to your lot.
ReadCost, permitting timeline, and long-term implications of private septic vs. town sewer for an ADU in Maine or New Hampshire.
ReadDevelopers, municipalities, and property managers - here's how to vet a commercial site contractor in New England.
ReadFrost, frozen ground, and snow logistics - what to know when timing your 2026 build.
ReadWe do not promise a fixed number of weeks. Permits, utilities, weather, and the lot decide the schedule. Ask for a timeline on your site.
ReadThe exact 10-point land feasibility checklist we use before recommending any ADU or custom-home purchase in Maine or NH.
ReadHow to finance an ADU build in Maine or NH - pros, cons, and typical terms for each of four financing paths.
ReadA transparent look at custom home pricing in 2026 southern Maine. What is included, what drives cost up, and where to save.
ReadLand clearing, bulk earthmoving, and foundation prep - a non-technical guide for first-time homeowners.
ReadNH homeowners are adding backyard cottages to house aging parents and adult children. Here's why the trend is accelerating.
ReadSeven questions worth asking before anything gets signed, and what a straight answer to each one sounds like.
ReadAirbnb / VRBO income potential for ADUs across southern Maine - town by town.
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