Accessory Structures in Mahwah, NJ (2026)
2 verified accessory structures rules for Mahwah, New Jersey, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Mahwah permits accessory apartments as a conditional accessory use in all residential zones under Chapter 24 (Zoning) of the Township Code. Section 24-4.1(d) authorizes the use, while Section 24-6.1(j) sets the conditions: one accessory apartment per single-family residence, 400 to 800 square feet, no more than 30% of the habitable living space, a maximum of three occupants, and the principal building must be owner-occupied at all times. After July 1, 1997, no new affordable accessory apartments may be created.
Mahwah Accessory Apartment (ADU) Rules
Heavy RestrictionsShed Rules
Mahwah Township's zoning code regulates residential sheds by size, with smaller utility sheds allowed close to property lines and larger accessory structures held to stricter setbacks and height limits.
Mahwah Shed Setback, Height and Size Standards
Some RestrictionsLooking for Bergen County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Mahwah city rules.
Accessory Structures in Bergen County →