7 architect-designed, turn-key models — 384 to 981 sq ft. Built on your lot by our own crew in about 8 weeks. Site prep, foundation, utilities, and premium finishes all included in the price you see.
Display models coming soon — three of these models are under construction right now. Soon you'll be able to walk a finished Langone ADU before you build yours.
Reserve a WalkthroughEach all-in price covers the base build, foundation, on-lot utility runs, permits, design, and standard finishes. Town water/sewer tap fees vary and are quoted separately.
Our entry point — a 384 sq ft one-bed. Fastest to permit, fastest to keys, lowest all-in price in the lineup.
600 sq ft, one bed, at the best price-per-foot in the lineup. The smart-money pick for rental income.
Premium one-bed with an attached garage — the full finish package, built for the family member living there full-time.
Cathedral great room, open vault ceiling, more daylight. A one-bed that lives much bigger than its footprint.
Two beds, two full baths, two floors. Rentable to two tenants without a fight over the bathroom.
Our largest 2-bed / 1-bath, two stories with a deep footprint and generous bedrooms.
981 sq ft, 2 bed / 2 bath premium spec — our top-of-the-line layout with room to spread out.
Price reflects a level, clear building area and a 20′ tie-in to existing well & septic. Tie-ins to town utilities or system upgrades are quoted separately.
Thinking of renting it out?
See estimated rent, monthly cash flow, and payback for any model — free, no email.
These aren't optional add-ons — they're what ships in every ADU we build.
Maine's statewide ADU law lets most single-family lots add at least one accessory dwelling unit by right — and New Hampshire's RSA 674:71-73 does the same across the border. If you own the lot, you likely have the right to build.
Check My Town's RulesLangone Site Services turn-key ADU pricing runs from $135,000 (The Bean — 384 sq ft) to $294,300 (Ella's Retreat — 981 sq ft, 2 bed / 2 bath). Every price is all-in — site prep, foundation, utilities, HVAC, and interior finishes included.
Most Langone ADU builds finish in about 8 weeks once utilities are at the property line and permits are in hand — excavation, foundation, framing, hookups, and full interior finish.
Yes — Maine now requires towns to allow at least one ADU on most single-family lots, and New Hampshire does the same under RSA 674:71-73. Langone handles all town-level permitting coordination.
Within ~30 miles of West Newfield, Maine — covering most of southern Maine (Sanford, Kennebunk, York County) and the New Hampshire Seacoast & Lakes Region (Rochester, Dover, Wolfeboro).
Get instant pricing for your lot, or book a free 20-minute build consult — we review your site, recommend the right model, and hand you a real budget. No sales rep, no pressure.