As Brisbane’s housing market continues to evolve, more homeowners are looking at ways to maximise their property’s potential. Granny flats and secondary dwellings are becoming increasingly popular as a solution for extra living space, rental income, or multi-generational living. If you’re considering building a granny flat, here’s everything you need to know about the design process, council regulations, and benefits.
What is a Granny Flat or Secondary Dwelling?
A granny flat, also known as a secondary dwelling, is a self-contained living space located on the same lot as the main house. These structures can be detached, attached, or even built under an existing home, depending on your property’s layout and zoning regulations.
Benefits of Building a Granny Flat
- Additional Income – Renting out a granny flat can provide a steady source of income, making it a great investment.
- Multi-Generational Living – Perfect for housing elderly parents, adult children, or extended family while maintaining privacy.
- Increased Property Value – Adding a secondary dwelling can boost your home’s resale value.
- Flexible Use – Can be used as a home office, guest house, or short-term rental.
Key Design Considerations
1. Space & Layout
Consider how much land you have available and how best to utilise the space. A well-designed granny flat should include a bedroom, bathroom, kitchen, and living area while maintaining privacy from the main residence.
2. Access & Privacy
Separate entrances, fencing, and landscaping can help maintain privacy for both the main home and the secondary dwelling.
3. Council Regulations & Approvals
Brisbane City Council has specific guidelines for building secondary dwellings, including:
- Maximum size restrictions (often up to 80m² in residential zones).
- Compliance with setback and boundary regulations.
- Parking and access requirements.
- Connection to utilities (water, electricity, and sewerage).
4. Building Materials & Energy Efficiency
Using sustainable materials and incorporating passive design principles can reduce energy costs and improve comfort year-round.
The Design & Approval Process
- Consult a Building Designer – Work with a professional to develop plans that suit your needs and comply with regulations.
- Obtain Council Approval – Submit the necessary documents for approval before construction begins.
- Hire a Builder – Choose a reputable builder experienced in granny flats and secondary dwellings.
- Construction & Final Certification – Once built, your new space will need final inspections and approvals before occupancy.
Get Expert Advice on Your Granny Flat Project
At Designer Planning, we specialise in designing functional and stylish secondary dwellings tailored to your needs. Whether you’re looking to create a rental opportunity or a space for family members, we can guide you through the entire process—from design to approval.
Ready to get started? Contact us today for a consultation!