ADU rules in Hoboken

Hoboken's zoning chapter contains no ADU authorization. Full-text searches of the city's ecode360 code for 'accessory dwelling unit', 'accessory dwelling' and 'accessory unit' each return zero results. No more than one principal building is permitted per lot except for planned developments, and the accessory building section regulates only placement and setbacks of accessory buildings, never authorizing them as dwellings. The single narrow exception: in the R-1 district, on through lots on the west side of Hudson Street that front on both Hudson Street and Court Street, an accessory building may measure 30 feet above average grade 'but shall not exceed one dwelling over grade-level parking or another permitted use'; the code defines this 'accessory apartment' as a single dwelling unit above a one-story accessory residential garage with direct access from Court Street.

No attached or internal ADU category exists in the code. An accessory structure attached to a principal building 'shall comply in all respects with the requirements of this chapter applicable to principal buildings', so any added unit is simply part of the principal building. Adding a dwelling unit to an existing building is handled as an ordinary conversion to a two-family or multifamily residential building where 'residential buildings' are a permitted principal use (R-1, R-2, R-3), not as an ADU: conversion from any use to a permitted use is allowed provided all requirements for the new use, including required off-street parking, are met and a new certificate of occupancy is obtained.

Verified from the R-1 district bulk standards; no square-footage cap for the dwelling itself is stated anywhere in Chapter 196.

Not addressed anywhere in the code. Because Hoboken has no ADU authorization, no owner occupancy standard for accessory units exists; the accessory apartment definition and the Court Street provision are silent on occupancy, and a full-text search of the code for 'owner occupancy' returns zero results.

Read directly from the minimum off-street parking table (residential buildings row, amended 2-18-1998 by Ord. No. R-294), the conversions section, and the R-1 district parking standard.

There is no ADU permit path because no district lists an accessory dwelling as a permitted or conditional use. Accessory uses in the R districts are limited to items such as private garages, home occupations, signs, wireless antennas, and 'other uses customarily incidental to principal uses'; the conditional use article (§§ 196-36 to 196-38) contains no accessory dwelling standard in any of its subsections A through DD. Adding a unit as a conversion to a permitted residential use requires meeting all requirements for the new use plus a new certificate of occupancy from the Zoning Officer.

Verified by full-text searches of the ecode360 code (guide HO0741, legislation through 7-8-2026) and by reading § 155-2 and Chapter 158. Chapter 196's general references point to rental housing (Ch. 154) and, in a cross-reference the code has not updated, rooming houses (Ch. 158); the former rooming house chapter was repealed 2-15-2023 by Ord. No. B-537 and Chapter 158 now holds Ord. No. B-750 of 4-2-2025 and Ord. No. B-781 of 7-9-2025. None of the eight adopted-but-uncodified ordinances in the ecode360 New Laws bank regulates rentals.