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Tewksbury, Hunterdon County · New Jersey
Can you build an ADU in Tewksbury, NJ?
An accessory dwelling unit (ADU), a granny flat, in-law suite, or backyard home, can add rental income or family space. Whether Tewksbury 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.
Tewksbury zoning & ADU rules
Max height (residential)
35 ft
We've mapped Tewksbury'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: Article VII Section 711 · https://library.municode.com/nj/tewksbury_township (via Composite Zoning 2024 (NJ), ArcGIS FeatureServer, accessed 2026-08-11)
Accessory dwelling units (ADUs) in Tewksbury, New Jersey
New Jersey has no single statewide ADU law. Each of the state's 564 municipalities, Tewksbury (Hunterdon County, NJ) included, sets its own zoning for accessory dwelling units (granny flats, in-law suites, backyard homes). Whether you can build one in Tewksbury, how big, and how tall depends on the town's ordinance and your specific lot. We've mapped Tewksbury's residential zoning: buildings are capped around 35 ft. Your ADU follows the town's accessory-structure standards on top of that.
Backyard homes that could fit a Tewksbury lot
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ADU FAQ
Can I build an ADU in Tewksbury, NJ?
Tewksbury 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 Tewksbury address to see for sure, free.
How much does an ADU cost in Tewksbury?
A detached ADU in Tewksbury 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 Tewksbury 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 Tewksbury?
Some NJ towns require owner-occupancy; others (like Jersey City) don't. We check Tewksbury's specific ordinance for you when you run your address.
See exactly what your Tewksbury lot allows
Enter your address and we read Tewksbury’s zoning against your parcel and tell you if an ADU fits, how big, and what it could earn. Free.
Check if your Tewksbury lot qualifies, free