Your Guide to Granny Flat Approval in WA

Building a granny flat is an exciting way to add extra living space, whether it’s for family or even a personal retreat. It’s also a fantastic way to maximise property usage and generate a steady stream of income. 

But before you start picturing the perfect design, it’s important to understand the key requirements involved. From council approvals to design regulations, there’s a fair bit to consider to ensure your project runs smoothly and stays compliant. In Western Australia (WA), the process of building a granny flat no council approval has become easier and more accessible, thanks to recent amendments to the Residential Design Codes (R-Codes). 

This guide will help you navigate the requirements of no granny flat approval in WA and make the most of these opportunities.

Granny Flats in WA No Longer Need Council Planning Approval

As of April 2024, regulations for ancillary dwellings (commonly known as granny flats) in WA no longer need council planning approval and have eased up even more. This means property owners, families and builders can save time and money, making the process more efficient and stress-free.

However, keep in mind that these changes are not one-size-fits-all. Whether your property qualifies depends on:

• Your local council’s specific regulations.
• Whether your project meets the updated deemed-to-comply requirements.
• The size and zoning of your land.

Keep in mind that every council area has its own rules, so it’s important to do your research and plan carefully before getting started.

Building with No Granny Flat Approval in WA

Even with these amended rules, there are still some factors you need to consider to ensure your granny flat is compliant and meets your needs.

Zoning Laws

Make sure your property is in an approved zoning area where granny flats can be built without council approval. Different areas have different rules, so double-check with your local authority.

Property Size

One of the biggest changes is the removal of the 350sqm lot size requirement. Now, granny flats can be built on smaller lots and even in grouped dwellings, as long as they comply with setbacks, height restrictions, site coverage and other planning guidelines.

Usage Restrictions

Previously, granny flats were only allowed for family members. Under the new rules, anyone can live in them, whether it’s a relative, a tenant or even someone you’ve signed a rental agreement with through a real estate agent.

Building Standards

To be able to build a granny flat with no council approval, you must still comply with WA’s building codes and safety requirements. Structural integrity, fire safety and insulation must all meet the required standards.

Location and Boundaries

Your granny flat must adhere to setback and boundary rules. For detailed guidance, check the updated R-Codes Volume 1 2024.

Utilities

Water, sewerage and electrical connections must be properly planned to meet compliance standards and ensure functionality.

Maximum Size

The maximum size for granny flats in WA is limited to 70m², but some local councils may allow up to 100m². Check the specific guidelines for your area.

Processing Time

Since the updated granny flat approval in WA regulations only require a building permit, the process is now much quicker, usually within 10 business days.

Parking Bay

Parking is no longer mandatory unless your property is in a high-density area or lacks public transport access.

Do's and Don'ts in Building Granny Flat No Council Approval

Let’s go through some important do’s and don’ts to ensure a smooth and compliant build.

Do’s

✔ Research Local Regulations
Check your council’s specific rules to avoid surprises later on.

✔ Ensure Proper Zoning
Confirm that your property falls under the new no-approval requirements.

✔ Adhere to Building Codes
Even without council approval, compliance with WA building standards is still essential.

✔ Hire Licensed Professionals
Work with experienced builders and trades to ensure quality workmanship, ensure compliance and efficient planning.

✔ Design with Privacy in Mind
Whether it’s for family or tenants, privacy should be a key factor in your layout.

✔ Plan for Accessibility
Consider features such as ramps, wider doors and step-free access for an inclusive space.

✔ Consider Future Use
Think ahead, will this granny flat be used for guests, family or rental income down the track?

✔ Factor in Parking
Even if not required, having a designated parking space adds convenience and value.

✔ Include Utilities Early
Plan water, power and sewerage during the design phase to avoid costly modifications later.

Don’ts

✘ Skip Research
Never assume you can build without checking local requirements first.

✘ Assume All Councils Are the Same
Different councils have different interpretations, always verify.

✘ Neglect Safety Standards
Cutting corners can lead to fines or unsafe living conditions.

✘ Build Too Close to Boundaries
Ensure compliance with setback regulations to avoid costly legal issues.

✘ Exceed Size Limits
Stay within the allowed maximum size to keep your build approval-free.

✘ DIY Complex Tasks
Avoid doing structural, plumbing or electrical work yourself; always seek expert guidance.