Slide 3
Slide 3

Modification of Consents – Section 4.55

Section 4.55 of the Environmental Planning and Assessment Act 1979 provides for modifications to development consents where it is demonstrated that the modification is substantially the same as the approved development.

There are three different types of Section 4.55 applications:

4.55 (1) – Modifications involving minor errors, misdescription, or miscalculation

A 4.55 (1) would be used, for example, to correct plan numbers, the description of a development or where Council has made an error in a condition of consent.

Section 4.55 (1A) – Modifications involving minimal environmental impact

A 4.55 (1A) would be used for minor amendments including, alterations to internal design, minor changes to the external façade, roofline, window positions or building finishes, etc.

Section 4.55 (2) – Other modifications

A 4.55 (2) would be applied to developments where there is an amendment which requires further assessment in terms of car parking, servicing, environmental impacts, appearance etc.

If Council does not agree that the proposed modification would result in substantially the same development as originally approved, you must submit a new Development Application (DA).

It is recommended that you consult with the responsible officer, prior to submitting your application to ensure that the proposal may be considered as a modification and that you have all the relevant information to enable assessment of the application. The fee prescribed by Council’s Management Plan must be paid with an application to modify a development consent.


To lodge a request to modify a Development Consent with Council you will need to complete the Development, Building and Subdivision Application Form ensuring you:

  • Check the box next to Modification to DA, CC, CDC,
  • Complete sections A-D, and
  • Make sure all the property owners have signed the form under Section B.

Once you have your plans, costs and supporting information together Council staff can provide you with a fee quote prior to lodgement by telephoning (02) 6728 8200.

Determination of modifications

A modification to an application will be determined by the authority that determined the original consent. For example, where Council granted the original consent, the modification application will be determined by Council and where the Joint Regional Planning Panel (JRPP) determined the original DA, the JRPP will determine the modification.

Please note that Council publications are available in Portable Document Format (PDF) and require Abobe Acrobat to open. Adobe Acrobat Reader is available from the Adobe website Adobe Acrobat software has an embeded ‘screen reader’ which can read aloud the text in most PDF files and is available for free at

Last modified 16-Jan-2020



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