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Wall Twp, Monmouth County · New Jersey
Can you build an ADU in Wall Twp, NJ?
An accessory dwelling unit (ADU), a granny flat, in-law suite, or backyard home, can add rental income or family space. Whether Wall Twp 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.
Wall Twp zoning & ADU rules
Max height (residential)
35 ft
Max stories
2.5
Min lot area
10,000 sf
We've mapped Wall Twp'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: wall-twp-nj Schedule of Zone Requirements, zone R-10: maximum height 35 feet / 2.5 stories. Read from the ordinance…
Wall Twp’s ADU rules, cited
- Wall Twp does not currently permit ADUs by right, so a variance may be needed.
Sources: Township of Wall Code Chapter 140 (Land Use and Development Regulations), Supp 36 (June 2026), read 2026-10-03 from ecode360 (WA1959): Attachment 2, Schedule of Permitted and Conditional Uses for Residential Zone Districts (amended through Ord. 1-2026); Section 140-140A ('Any use not specifically permitted in § 140-139 is prohibited except as noted in § 140-141'); Section 140-200D ('No accessory building shall be used for residential purposes by any person or persons, including members of the family of the occupants of the principal building, except as otherwise specifically permitted herein'); Section 140-112 ('Except for multifamily and nonresidential uses, no more than one principal building and its accessory buildings shall hereafter be erected on any one lot').
See exactly what your lot allowsAccessory dwelling units (ADUs) in Wall Twp, New Jersey
New Jersey has no single statewide ADU law. Each of the state's 564 municipalities, Wall Twp (Monmouth County, NJ) included, sets its own zoning for accessory dwelling units (granny flats, in-law suites, backyard homes). Whether you can build one in Wall Twp, how big, and how tall depends on the town's ordinance and your specific lot. We've mapped Wall Twp's residential zoning: buildings are capped around 35 ft / 2.5 stories, with a minimum lot area near 10,000 sf. Your ADU follows the town's accessory-structure standards on top of that.
Backyard homes that could fit a Wall Twp lot
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ADU FAQ
Can I build an ADU in Wall Twp, NJ?
Wall Twp 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 Wall Twp address to see for sure, free.
How much does an ADU cost in Wall Twp?
A detached ADU in Wall Twp typically runs $150,000 to $300,000+ all-in depending on size, site, and finishes. The build is financed and the rent helps carry the loan. You own the home.
Do I need to live on-site to build an ADU in Wall Twp?
Some NJ towns require owner-occupancy; others (like Jersey City) don't. We check Wall Twp's specific ordinance for you when you run your address.
See exactly what your Wall Twp lot allows
Enter your address and we read Wall Twp’s zoning against your parcel and tell you if an ADU fits, how big, and what it could earn. Free.
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