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Development Assessment

State Significant Infrastructure (SSI)

Some types of infrastructure are deemed to have State significance due to the size, economic value or potential impacts that it may have.
Infrastructure that is State Significant is identified in the State and Regional Development State Environmental Planning Policy.


Types of State significant infrastructure

State significant infrastructure (SSI) includes major transport and services development that have a wider significance and impact than on just the local area.

The Government has identified certain types of development that are SSI, for example:

  • Rail infrastructure,
  • Road infrastructure,
  • Water storage and treatment plants,
  • Wharf and boating facilities,
  • Pipelines, and
  • Certain development in National Parks.

A development proposal for any of the identified development types is SSI if it:

  • is over a certain size,
  • is located in a sensitive environmental area, or
  • would exceed a specific capital investment value.

The full list of SSI development types can be viewed in Schedules 3 and 4 to the State and Regional Development State Environmental Planning Policy.

Lodging an application

Once you have determined that your proposal is SSI, you can lodge your application online with the Department.

The Minister for Planning is the consent authority for SSI applications. SSI applications are assessed by the Department of Planning and Environment. In some cases, the Minister may delegate the decision making function to Department staff.

Lodge your application