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FOGO in Mosman Park

All your FOGO questions answered here

Wellington Street night works from 26 April-3 May

Major impact to people who use or live along Wellington Street including no street parking during works. Click here for more

Underground Power Project update

What's the latest and next steps

Change of use

Building approval for change of use

Although you may not need planning approval for a change of use, you may still require other approvals, for example:

  • environmental health approval if you plan on starting a food, beauty or hairdressing business
  • building approval (a building permit) for any internal fit-outs, change of building classification, construction or demolition work.

If the change of use changes the classification of the building, you may need to do building work to meet the relevant building standards and the National Construction Code. This will require you to apply for a certified building permit.

A building permit is required for:

  • structural works
  • changes to the internal layout which alters the requirements of the National Construction Code
  • changes to the fire safety features of the building e.g. exit signs, fire sprinklers etc.

You will also need to apply for an Occupancy Permit (BA9) following completion of the works, or if the change of use changes the classification of the building, or if you make changes to the fire safety features of the building.

Please see our building forms and documents page for more information on application forms and checklists for submitting a building application.

Please see our health forms and documents page for more information on submitting a health application.

Fees and charges

The building permit fee for certified construction works with a contract value less than $20,000 is $166.65. If the value of the contract is more than $20,000, the building permit fees will be calculated at the following percentages of the total contract price:

  • application Fee: 0.19%
  • building Service Levy: 0.137%

See estimate your building application fees please visit our building fees page.


We process all BA1 – Application for Building Permit (certified) within 10 working days.

If we need further information to assess your application, you will have up to 21 calendar days to provide any outstanding information. We then have the balance of the remaining 10 working days in which to provide a determination.

If the information is not received within the 21 days, we may refuse your application.