Langone Site Services builds turn-key ADUs and handles excavation, site work, and septic in Sanford, Maine. Springvale is part of the city. Call (978) 987-0089.
Sanford follows Maine LD 2003. An ADU still has to meet the space and bulk rules of its zone. Shoreland rules can apply near the Mousam. The town can amend the ordinance, so we read your parcel before anyone prices the dirt work.
Sanford is the largest city in York County by land area, and Springvale is part of it. Maine LD 2003, 30-A MRSA 4364-B, requires a path for at least one ADU on a lot with a single-family, two- or three-unit home. The district setbacks we verified are in the table below.
Maine LD 2003 - at least one ADU on a lot with a single-family, two- or three-unit home
Sanford is the largest city in York County by land area. ADUs follow the district setbacks. We pull the zone on your parcel before we price the site work.
| District | Front | Side | Rear | Lot / cover |
|---|---|---|---|---|
| RDprimaryResidential DevelopmentFront 25 ft. If the street has a uniform existing setback, new work holds that line. Accessory structures can drop to 2 ft side/rear in listed cases. | 25 ft | 10 ft | 10 ft | - |
| RRRural ResidentialFront depends on the street: arterial 75 ft, collector / existing local 40 ft, proposed local 25 ft. Combined side setbacks 40 ft. | 25-75 ft | 15 ft | 15 ft | 2 acres (density) |
Verified 2026-08-22 against Sanford Code, Article XI Zone Requirements (eCode360). Towns amend ordinances, so confirm with the land-use office before you build. Official source
These three cover a 525 sq ft one-story, a 600 sq ft one-story, and an 800 sq ft two-bedroom plan. Ella's Retreat and The Ossipee are larger. We only price those if the city allows the footprint.
525 sq ft, 1 bed / 1 bath, 30×18, one story.
View this model600 sq ft, 1 bed / 1 bath, 30×20, one story.
View this model800 sq ft, 2 bed / 1 bath, 40×20, one story.
View this modelA downtown-edge lot and a larger South Sanford parcel are different jobs. The Wakefield is 525 sq ft on one floor. The Newfield is 600 sq ft on one floor. The Shapleigh is 800 sq ft with two bedrooms. We confirm the zone before you pick.
Price a Sanford ADUExcavation, access roads, and septic are the usual Sanford tickets, with the fleet from West Newfield. We'll look at the ground, the access, and the utilities on your lot.
ExcavationSanford's core is more often on city utilities. The septic jobs are the rural edges toward Springvale and South Sanford. Design on those edges starts at the published $700, and conventional work starts at $18,000.
Septic installationSanford site work is access-road cuts and pads on the bigger South Sanford parcels, plus tight access closer to downtown.
Site workEvery town we cover is listed on the service area page.
We will read the ordinance against your parcel, look at what the ground will take for septic and access, and come back to you with a figure rather than a range.
