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Changing a building’s use under DDA: the approval route

A proposed change of use needs to be considered separately from the building’s existing approval or a new tenant’s licence.

In this guide

A change of use is a separate submission type through DDA’s Building Modification route; it is not a fit-out application. Confirm the required design review and permit before starting work.

Separate the proposed use from the existing approval

A change of use is its own submission type through Building Modification, not a fit-out. Describe the current approved use and the proposed activity clearly so the appointed team can prepare the correct application.

Describe the current and proposed use

Gather the existing approved plans, unit details, owner permission and a clear description of the proposed use. Ask the appointed team which architectural, structural and building-services information the application requires.

Plan the modification submission

  1. Document the change

    Compare the existing approval and proposed activity.

  2. Confirm the DDA route

    Check the current modification application and any relevant circulars.

  3. Coordinate the design

    Have the responsible designers assess the affected parts of the building.

  4. Plan later stages

    Confirm the permit, inspection and completion requirements.

Confirm what the approval covers

DDA’s modification form separates design-review and permit submittals. A planning or design response should not automatically be treated as permission to start works. Check the deliverable and its conditions. DDA’s Fit-Out Permit notes state that, if DDA decides the submission should have been a Building Modification, the fit-out fee is not refunded. Confirm the application type before submitting.

Support with a change of use

Gravity can help review the project information and coordinate the agreed design and approval scope. Talk to us about your project.

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Common questions

Can the original building approval cover any new use?

A change of use needs its own submission through Building Modification. It does not fall under a fit-out application or automatically under the building’s original approval.

Is a business licence the same as a building approval?

They address different matters. Confirm the property approval route for the proposed activity.

Is every modification package the same?

No. Check the submittal type and its applicable technical documents.

Official sources

Prepared by Gravity Engineering. Sources checked 24 October 2026. Check the current official service requirements before applying.

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