ADU rules in Union City, NJ β also called accessory dwelling unit regulations or granny flat ordinances β cover setbacks, owner-occupancy, parking, and permit requirements.
Union City allows ADUs under the 2024 NJ ADU mandate (N.J.S.A. 52:27D-123.16, effective 2025) and Chapter 223 (LDO). ADUs are permitted by right on lots with single or two-family homes. Chapter 223 provides local ADU implementation standards including building permits and Certificate of Occupancy.
The 2024 NJ ADU mandate (N.J.S.A. 52:27D-123.16) requires municipalities to allow ADUs by right on lots with single or two-family homes, with no owner-occupancy requirement, parking minimums waived, and ministerial processing (no discretionary review, deemed approved if not acted on within 60 days). Chapter 223 (LDO, amended 2019) implements local ADU rules. All ADUs require building permits and a Certificate of Occupancy under Chapter 426 (Building Construction Standards). Given Union City's extreme density and existing multi-family character, ADU implementation requires zoning office consultation. Contact Union City Zoning/Building at (201) 348-5731.
Unpermitted ADU: stop-work order, mandatory permits, fines.
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Side-by-side rule comparisons with other cities in Hudson County.
See how other cities in Hudson County handle adu rules.
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