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

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COASTAL GENERAL PERMIT  12 – Construction of gabions at a single family home or duplex lot

The Coastal General Permit 12 authorizes construction of gabions at a single family home or duplex lot which has an eroding shoreline, provided:

  • The gabions meets the definition at N.J.A.C. 7:7-1.3;
  • The residence is not part of a larger development owned or controlled by the same property owner;
  • The shoreline is not along the Atlantic  Ocean, Delaware Bay, Raritan Bay or Sandy Hook Bay;
  • The gabions are laid along the shore such that the face of the gabions are not steeper than one vertical foot to two horizontal feet.  If the steepness and height of the non-storm shoreline profile  precludes the gentler slope, a step-faced gabion system may be as steep as one vertical foot to one horizontal foot;
  • The placement of the gabions in the waterway is limited to that necessary to protect the shoreline;
  • Riprap may be placed at the toe of the gabions only if the Department determines there is scour potential and the amount of riprap is minimized;
  • Fill material placed to achieve the required slope must be added only to the upland;
  • Gabions must be tightly packed with four to eight inch diameter stone, the edges laced together with steel wire and the individual gabions must be wired together;
  • An engineer must determine the size and number of gabions and the correct placement in order to maintain stability of the project, adjacent properties and offshore areas;
  • Placing gabions in dunes or wetlands is prohibited. Any wetlands disturbed during construction must be restored to pre-construction conditions;
  • Public access is required in accordance with N.J.A.C 7:7E-3.50 and 8.11, unless 7:7-7.12(c) applies to your project.

You can read the full details in the rule at N.J.A.C.7:7-7.12.

If your project does not meet the requirements or limitations of Coastal General Permit 12, it may qualify for a permit-by-rule, other general permit, or a CAFRA or Waterfront Development Individual Permit.  Please review those tabs under Coastal Permitting for additional information.

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Last Updated: February 9, 2015