ADU builder, excavation, and site work for Rochester, East Rochester, and Gonic. Based 30 minutes away in West Newfield, Maine, Langone Site Services delivers turn-key ADU builds, custom homes, excavation, and septic systems across Strafford County.
Rochester is New Hampshire's sixth-largest city and a dense residential market sitting 15 minutes from Dover and 30 minutes from Portsmouth. Lot supply is tight, single-family zoning dominates, and ADUs have become the primary vehicle for multi-generational living and rental income across the city's neighborhoods.
A detached ADU in Rochester typically rents long-term for $1,400-$1,800/month with very low vacancy given the tight Strafford County housing market. Many of our Rochester clients are parents building for adult children or adult kids building for aging parents — multi-generational cost savings often exceed $2,500/month vs separate housing.
Rochester lots are often compact with existing utilities, mature landscaping, and buried obstacles. Our smaller excavator fleet and owned trucking let us work clean in tight backyards, relocate utilities efficiently, and finish grade without tearing up neighboring property.
Under New Hampshire's HB 577 (2025), Rochester must allow one ADU — attached or detached — by right on any lot zoned for single-family use, with no special exception or conditional use permit, and no size cap below 950 sq ft. Permitting timelines in Rochester are typically 45-75 days when plans arrive complete.
Check My LotYes. We build turn-key ADUs in Rochester from $135,000, with all 7 models priced up front and most builds finished in about 8 weeks. A detached ADU in Rochester typically rents long-term for $1,400-$1,800/month with very low vacancy given the tight Strafford County housing market. Many of our Rochester clients are parents building for adult children or adult kids building for aging parents — multi-generational cost savings often exceed $2,500/month vs separate housing.
Under New Hampshire's HB 577 (2025), Rochester must allow one ADU — attached or detached — by right on any lot zoned for single-family use, with no special exception or conditional use permit, and no size cap below 950 sq ft. Permitting timelines in Rochester are typically 45-75 days when plans arrive complete.
Rochester lots are often compact with existing utilities, mature landscaping, and buried obstacles. Our smaller excavator fleet and owned trucking let us work clean in tight backyards, relocate utilities efficiently, and finish grade without tearing up neighboring property.
Rochester is about 30 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: multi-generational ADU builds in Rochester and Gonic.
Or email dylan@langonesiteservices.com