Edison, NJ Accessory Structures: ADU Permits (2026)

There is no streamlined ADU permit pathway in Edison Township because the underlying zoning code does not list ADUs as a permitted use. The actual permit sequence for an Edison homeowner who wants to build an ADU is: (1) Pre-application meeting with the Edison Planning and Zoning Division to discuss whether a use variance is required and to confirm lot configuration, zone, and any redevelopment-area overlays. (2) Use variance application to the Edison Zoning Board of Adjustment under N.J.S.A. 40:55D-70(d), filed on the standard board application with site plan, architectural elevations, parking and circulation diagram, neighbor notification list, and escrow deposit; the application is heard at a noticed public hearing with sworn testimony from the applicant's planner and engineer, and approval requires an affirmative vote of at least five board members. (3) If the variance is granted, the homeowner files NJ UCC subcode permit applications - building (UCC-F110), electrical (UCC-F120), plumbing/gas (UCC-F130), and fire-protection (UCC-F140) where applicable - with the Edison Construction Code Official under N.J.A.C. 5:23. (4) Inspections during construction (footings, framing, rough electrical/plumbing, insulation, final) by the relevant subcode officials. (5) Certificate of approval and, where the unit is a separate dwelling, a certificate of occupancy. Gas piping must be installed by a NJ Master Plumber licensed under N.J.S.A. 45:14C unless the homeowner self-performs in their own residence with the Construction Official's permission. Total elapsed time from pre-application through CO typically runs 9 to 18 months for an Edison ADU when a variance is required.