Granny Flats
Granny Flat Approvals & Certification
Build your granny flat with confidence
A granny flat can create flexible space for family, guests, home office use or additional accommodation. Before construction begins, it is important to understand the building approval, design and certification requirements for your property.
Active Building Approvals helps homeowners, builders and developers navigate granny flat approvals across Queensland and Northern New South Wales. We provide clear advice from the initial plans through to inspections and final documentation
What is a granny flat?
A granny flat is commonly a secondary dwelling or self-contained accommodation located on the same property as a primary home. It may be a detached backyard dwelling, converted garage, studio or extension to an existing house.
The requirements can vary depending on the property location, zoning, site area, intended use, building design and local authority requirements.
Our granny flat services
- Building approval and certification advice
- Review of plans and supporting documents
- Secondary dwelling approval requirements
- Garage conversions and existing structures
- Structural engineering coordination
- Site and setback considerations
- Required inspections during construction
- Final certification documentation
- Existing or unapproved granny flats
What may be required?
Each granny flat project is different. Depending on the design and location, you may need:
- Site plans, floor plans and elevations
- Building approval documentation
- Structural engineering details
- Soil, drainage or footing information
- Energy efficiency information
- Fire and bushfire-related considerations where applicable
- Boundary setback assessment
- Plumbing and service documentation
- Stage inspections and final certification
- Commercial fit-out and change-of-use advice
- Regulatory and council-related building matters
Planning a new granny flat
Early advice can save time and avoid costly changes later. Before you commit to a design or builder, speak with us about the approval requirements for your property.
We can help identify the documents and reports likely to be needed, so your project can progress with a clearer understanding of the next steps.
Existing or unapproved granny flats
If a granny flat, converted garage or backyard dwelling was built without the expected approvals or final records, we can help assess the situation.
This may be important when selling, buying, refinancing, leasing or renovating a property. Depending on the circumstances, the process may involve reviewing available records, obtaining as constructed drawings, arranging inspections or coordinating further documentation.
Our Process
Review your plans
We discuss the proposed granny flat and review available plans, property details and documents
Identify requirements
We explain the likely approvals, reports, certificates and inspections required.
Assist with certification
We help coordinate the documentation needed to progress your building approval.
Finalise your records
Where applicable, we support inspections and final certification documentation for the completed project.
Why choose Active Building Approvals?
- Clear guidance in plain language
- Support for new and existing granny flats
- Assistance for homeowners, builders and developers
- Practical advice tailored to your property
- Services across Queensland and Northern NSW
Start your granny flat project
