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South River, Middlesex County · New Jersey
Can you build an ADU in South River, NJ?
An accessory dwelling unit (ADU), a granny flat, in-law suite, or backyard home, can add rental income or family space. Whether South River allows one, and how big, comes down to the town’s zoning and your specific lot. Here’s what we know, and how to check yours.
South River zoning & ADU rules
Max height (residential)
65 ft
We've mapped South River's residential zoning. An ADU on your lot follows the town's accessory-structure standards: check your specific address for the exact size, height, and setback it allows.
Source: HEIGHT / STORY…
Accessory dwelling units (ADUs) in South River, New Jersey
New Jersey has no single statewide ADU law. Each of the state's 564 municipalities, South River (Middlesex County, NJ) included, sets its own zoning for accessory dwelling units (granny flats, in-law suites, backyard homes). Whether you can build one in South River, how big, and how tall depends on the town's ordinance and your specific lot. We've mapped South River's residential zoning: buildings are capped around 65 ft. Your ADU follows the town's accessory-structure standards on top of that.
Backyard homes that could fit a South River lot
Our proven designs, each fitted to your lot, then made yours (trim, color, layout). Photorealistic renderings of the real thing, not stock photos.
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ADU FAQ
Can I build an ADU in South River, NJ?
South River sets its own ADU rules, and we've mapped its residential zoning. Whether your specific lot qualifies, and how big an ADU it allows, comes down to your parcel's size, setbacks, and the accessory-structure standards. Check your South River address to see for sure, free.
How much does an ADU cost in South River?
A detached ADU in South River typically runs $150,000 to $300,000+ all-in depending on size, site, and finishes. Because the build is financed, you can add rental income to your South River property without paying the build cost up front, and the rent helps carry the loan.
Do I need to live on-site to build an ADU in South River?
Some NJ towns require owner-occupancy; others (like Jersey City) don't. We check South River's specific ordinance for you when you run your address.
See exactly what your South River lot allows
Enter your address and we read South River’s zoning against your parcel and tell you if an ADU fits, how big, and what it could earn. Free.
Check if your South River lot qualifies, free