ADU builder, excavation, and residential site work for Dover homeowners. Based 40 minutes away in West Newfield, Maine, Langone Site Services delivers turn-key ADU builds, custom homes, excavation, and septic systems across Strafford County.
Dover sits on the Cocheco River at the heart of New Hampshire's Seacoast region, minutes from Portsmouth, UNH, and the coast. It has some of the strongest ADU demand in the state driven by rising home prices, a transient professional workforce, and aging-in-place needs.
Dover ADUs rent for premium rates — a finished 1-bed detached unit typically earns $1,800-$2,400/month long-term, with short-term rental potential significantly higher near downtown and the river walk. We've delivered ADUs in Dover neighborhoods from downtown to Garrison Hill.
Dover properties often include challenging grades, old fill, and bedrock close to surface — especially on the Garrison Hill and south-end slopes. We rock-hammer when needed, handle engineered retaining walls, and coordinate with Dover's public works for tie-ins.
Under NH's HB 577 (2025), Dover must allow one ADU — attached or detached — by right wherever single-family homes are permitted, with no special exception required and no size cap below 950 sq ft. Shoreland zoning still applies near the Cocheco River.
Check My LotYes. We build turn-key ADUs in Dover from $135,000, with all 7 models priced up front and most builds finished in about 8 weeks. Dover ADUs rent for premium rates — a finished 1-bed detached unit typically earns $1,800-$2,400/month long-term, with short-term rental potential significantly higher near downtown and the river walk. We've delivered ADUs in Dover neighborhoods from downtown to Garrison Hill.
Under NH's HB 577 (2025), Dover must allow one ADU — attached or detached — by right wherever single-family homes are permitted, with no special exception required and no size cap below 950 sq ft. Shoreland zoning still applies near the Cocheco River.
Dover properties often include challenging grades, old fill, and bedrock close to surface — especially on the Garrison Hill and south-end slopes. We rock-hammer when needed, handle engineered retaining walls, and coordinate with Dover's public works for tie-ins.
Dover is about 40 minutes from our West Newfield, Maine shop, so it's well within our core service area — meaning fast site visits and no long-haul mobilization charges. Call (978) 987-0089 or use our free instant pricing tool to get started.
Full service area includes 45+ towns within 30 miles of West Newfield, ME. See the full service area map.
More permitting, pricing, and rental answers in the blog — All guides.
Free consultation, real pricing, permitting handled. Recent work: ADU builds and site work in Dover neighborhoods.
Or email dylan@langonesiteservices.com