Skip to main content

What You Need To Know Before Building A Granny Flat

As our population ages, more and more Australian families are considering building granny flats on their properties to accommodate their elderly parents or to generate additional income through rentals. However, constructing a granny flat requires careful planning and approval from local councils to ensure the safety and liveability of the structure. In this blog post, we will discuss everything you need to know about building a granny flat in Australia.

What You Need To Know Before Building A Granny Flat

What Is In A Granny Flat?

A self-contained, detached dwelling, a granny flat is located on the same property as the main home. It serves a variety of purposes, including extra living space, home office, guest accommodation, or rental income stream.

As of 2019, most of the senior population are satisfied with their accommodations. However, 30% of this population would want to move eventually–hence the growing popularity of granny flats.

What are the regulations and permits for building a granny flat in Australia?

The regulations and permits for building a granny flat in Australia vary by state and territory. It’s essential to understand the specific requirements in your area. Generally, however, there are key guidelines and regulations that apply to building a granny flat.

Some of the key requirements include the following:

  • The maximum size of the granny flat is typically limited to 60m².
  • The granny flat must be self-contained, with its own bathroom, kitchen, and living area.
  • There must be enough outdoor space to provide adequate light and ventilation.
  • The granny flat must comply with fire safety and energy efficiency standards.
  • You may need to provide additional car parking spaces on your property.
  • You may also be required to provide a private outdoor space for the occupants of the granny flat.

To make sure that the granny flat complies with these requirements, you’ll need to obtain building approval from your local council before you can begin construction. The approval process can be complex and varies depending on where you live. Since it’s essential that the structure complies with building codes and regulations, you should employ the services of a licensed builder who can assist you with the design and approval process.

In addition to building approval, you may need to accquire planning approval. Planning approval is necessary to ensure that the granny flat doesn’t have any adverse impacts on the neighbourhood.

If you’re planning to rent out your granny flat, you’ll need to secure a landlord registration and follow all tenancy laws and regulations in your area.

How long does it take to build a granny flat?

The time it takes to build a granny flat can vary depending on some factors, including the size and complexity of the structure, the builder’s workload, and the weather. On average, a granny flat can take anywhere from 12 to 20 weeks to complete.

Note that building a granny flat isn’t a quick fix, and you should allow additional time for the design and approval process.

What services are available for building a granny flat?

There are many services available to help you build a granny flat in Australia. These services include:

  • Building companies that specialize in designing and constructing granny flats
  • Draftsman and architects who can design the structure and get building approval on your behalf
  • Consultants who can provide advice on building codes, regulations, and other requirements
  • Landscapers who can design and construct outdoor spaces to complement your new granny flat

Can I build a granny flat on my property?

In most cases, you’ll be able to build a granny flat on your property. However, there are some restrictions to be aware of:

  • The property must be large enough to accommodate the additional dwelling.
  • You must comply with local zoning laws and regulations.
  • The granny flat must not have any adverse impacts on the neighbourhood, including traffic congestion, parking issues, and privacy concerns.


Building a granny flat can be a great way to accommodate elderly family members, create a rental income stream, or add extra living space to your property. Plus, it increases the value of your home.

Planning for a granny flat’s construction in Australia entails certain steps, such as determining the purpose and use of the structure and obtaining building approvals. By preparing thoroughly, you can guarantee that the granny flat is safe and liveable, complying with all building codes and regulations.

Book a ConsultationCall Us: 1300 060 651
What You Need To Know Before Building A Granny Flat
Free Site Assessment
close slider

Error: Contact form not found.