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Division of Land Use Regulation
State of New Jersey Department of Environmental Protection

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Permit-by-rule (PBR) 1 - expansion of a single family home or duplex

The PBR 1 authorizes the expansion of a legally constructed, habitable single family
home or duplex on the non-waterward sides of the single-family home or duplex, provided the expansion:

  • Is not proposed on a beach, dune, or wetland;
  • Meets the requirements of N.J.A.C. 7:7-9.25 (Flood hazard areas); and
  • Does not exceed a cumulative surface area of 400 sq. ft. on the property constructed after July 19, 1994.
    • For example, a 200 sq. ft. expansion of a single family home or duplex could be authorized under this PBR and an additional 200 sq. ft. expansion could later be authorized under this PBR, since the cumulative footprint of the development for both expansions would not exceed 400 sq. ft. on the property. However, a property on which a 300 sq. ft. expansion was already constructed pursuant to a PBR would not be eligible for another PBR subsequently for an additional 200 sq. ft. expansion since the cumulative total footprint of development for both expansions would exceed 400 sq. ft.

Full details are provided at N.J.A.C.7:7-4.1.

If your project does not meet the requirements of the PBR 1, it may qualify for a General Permit or an Individual Permit.  Additional information on these permit types can be found on the Coastal Permitting page.

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Last Updated: August 26, 2019