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The Purpose of a Section 4.55 Modification
A Development Application (DA) approval is a legal document, granting consent for a specific project. However, development is dynamic. Circumstances change, designs evolve, or minor errors may be discovered. This is where a Section 4.55 Modification, under the Environmental Planning and Assessment Act 1979 (EP&A Act), becomes crucial. It allows an applicant to legally amend an existing development consent without the need to submit an entirely new DA. This saves considerable time and resources.
Town Planning Reports & Architectural Drawing Sets:
What are Categories of Section 4.55 Modifications?
The EP&A Act categorises Section 4.55 Modifications based on the nature and scale of the proposed changes:
1. Section 4.55(1) – Minor Error, Misdescription or Miscalculation:
Purpose: For very minor administrative corrections that don't alter the approved development or its environmental impact. Examples include correcting a typo, a slight miscalculation of dimensions, or a misdescription of materials.
Assessment: Typically a fast process with minimal documentation required.
2. Section 4.55(1A) – Modifications Involving Minimal Environmental Impact:
Purpose: For minor changes to the approved development that will have no or minimal environmental impact. The development, as modified, must remain "substantially the same" as the original consent. This category is often used for small design tweaks, minor internal reconfigurations, or slight adjustments to conditions of consent that don't alter the development itself.
Assessment: Requires an assessment by the consent authority (usually council) to confirm "minimal environmental impact" and "substantially the same." May involve limited notification.
3. Section 4.55(2) – Other Modifications:
Purpose: This is the most common type for more significant changes to an approved development, provided the modified development remains "substantially the same" as the original consent. Examples include changes to building height, floor area, layout changes, or alterations to external materials that are more than "minimal environmental impact."
Assessment: Requires a more detailed assessment, often involving public notification, similar to a new DA, but within the framework of the existing consent. The key legal test here is whether the modified development remains "substantially the same" as what was originally approved. If not, a new DA is required.
