Union City, Hudson County · New Jersey

Can you build an ADU in Union City, NJ?

An accessory dwelling unit (ADU), a granny flat, in-law suite, or backyard home, can add rental income or family space. Whether Union City 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.

Check if your Union City lot qualifies, free

Union City zoning & ADU rules

Max height (residential)

12 ft

We've mapped Union City'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…

How long a permit takes in Union City

From 918 real Union City permits in the New Jersey DCA record. The largest group, multiple family dwellings, dormitories, etc., takes a median of 103 days from filing to issue (n=406). This is elapsed time, not review hours: it includes the waiting and the corrections.

Project type	Permits	Fastest 25%	Median	Slowest 25%
Multiple family dwellings, dormitories, etc.	406	44d	103d	250d
One and two family units, 5 lodgers or less each	253	36d	84d	200d
Business Uses	168	46d	105d	258d
Accessory buildings and miscellaneous structures	46	115d	193d	319d
International Residential Code	34	27d	112d

Accessory dwelling units (ADUs) in Union City, New Jersey

New Jersey has no single statewide ADU law. Each of the state's 564 municipalities, Union City (Hudson County, NJ) included, sets its own zoning for accessory dwelling units (granny flats, in-law suites, backyard homes). Whether you can build one in Union City, how big, and how tall depends on the town's ordinance and your specific lot. We've mapped Union City's residential zoning: buildings are capped around 12 ft. Your ADU follows the town's accessory-structure standards on top of that.

Backyard homes that could fit a Union City lot

Our proven designs, each fitted to your lot, then made yours (trim, color, layout). Photorealistic renderings of the real thing, not stock photos.

ADU FAQ

Can I build an ADU in Union City, NJ?

Union City 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 Union City address to see for sure, free.

How much does an ADU cost in Union City?

A detached ADU in Union City 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 Union City 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 Union City?

Some NJ towns require owner-occupancy; others (like Jersey City) don't. We check Union City's specific ordinance for you when you run your address.

See exactly what your Union City lot allows

Enter your address and we read Union City’s zoning against your parcel and tell you if an ADU fits, how big, and what it could earn. Free.