Steel Frames WA

New Granny Flat Regulations-What You Need to Know

The government of Western Australia is making moves to tackle the housing crisis, and residents and property investors are pleased. 

All of Australia has grappled with housing shortages for some time. However, Western Australia is dealing with especially low property availability. Perth, in particular, is struggling with a high demand for housing and an extremely limited supply. It presently has the lowest vacancy rate of any state capital.  

The WA government is relaxing regulations overseeing the building of granny flats to help bring an influx of available housing to the state. 

 

What is a Granny Flat?  

A granny flat is a second home situated on the same lot as a primary dwelling. Typically, granny flats are built to be self-contained dwellings for one or two people. While it was once required to rent granny flats to members of your family, homeowners now rent the structures to whomever they please. It is as common to see granny flats listed as AirBnB rentals as it is to find them occupied by elderly family members. 

 

Why are Granny Flats Considered Ancillary Dwellings? 

Ancillary dwelling or secondary dwelling are the proper terms for what is usually called a granny flat. These structures are large enough for one or two adults to live comfortably and contain the facilities a person would require to live in them independently. In addition to living areas and separate bedrooms, you could expect to see a kitchen and a bathroom. Granny flats frequently have a laundry area included in the floor plan. 

 

Legalities of Building a Granny Flat 

Even though the rules governing granny flats have been relaxed considerably, there are still a few legalities you need to know. 

  • In order to build a granny flat in Western Australia, you must have an adequate amount of land with a primary dwelling on the lot. Because granny flats are ancillary structures, they cannot be the first structure built on a property. 
  • Grouped dwellings, such as duplexes, are permitted to build a granny flat on their land if space is sufficient. Prior to the new regulations, this was not allowed.  
  • The granny flat must adhere to the setback and building size requirements based on the lot the granny flat will occupy. The height of your granny flat must be considered, as well as other specifics. 
  • Building permits are still necessary even though council approval is not.  

It ensures that you comply with all of the relevant standards outlined in the Building Codes of Australia. These include, 

  • Fire resistance 
  • Energy efficiency 
  • Sustainability 
  • Accessibility 
  • Health and safety provisions 
  • Guidelines for appropriate equipment and services 

 

Benefits of Building a Granny Flat 

  1. Maintain family ties 
  2. Increased property value 
  3. Flexibility for use of the additional space 
  4. Rental income  
  5. An affordable housing option in a tough market 

 

Things to Consider Before Building a Granny Flat  

While WA has relaxed some regulations regarding ancillary buildings, and you do not need council approval, there are still a number of things you should consider before beginning the building process. 

  • Building permits are necessary to ensure compliance with regulations 
  • The cost of your utilities will increase 
  • The initial investment can be higher than you expected 

 

Building Regulations and Obtaining a Permit For Granny Flats 

2024 brings changes to long-standing granny flat regulations in Western Australia. One noteworthy change is an end to property size restrictions. Under the new system, you can build a granny flat on your property no matter the size of your land. A caveat to this is your granny flat must meet all relevant deemed comply conditions, which include, 

  • Setbacks 
  • Site cover 
  • Height 
  • Access 
  • Visual privacy 
  • Compatibility with the design of the existing home 

Additionally, grouped dwellings may build granny flats if the basic regulations are met. 

** Please Note** 

Before constructing a granny flat, you must get a building permit  

from your local government. Additionally, compliance with the National Construction Code is still required. 

 

Why Building a Granny Flat With Steel Frames is the Way to Go  

Whether the granny flat you are planning is for elderly relatives or adult children or will be a source of rental income, you should have the peace of mind that comes with knowing you are offering a safe and sturdy space. 

Steel frame structures have a number of benefits that include, 

  • Lasting value 
  • Durability 
  • Fast construction 
  • Cost-effectiveness 
  • Resists pests like ants and termites 
  • Not easily damaged by rot or fire 

 

FAQs

What is the Minimum Size Required 

No minimum lot size is mandatory if your granny flat is no larger than 70sqm and you meet all setback requirements in the r-Codes 

Can I Build One in Vacant Land?  

A granny flat is considered an ancillary building and cannot be the first structure built on a plot of vacant land. 

How Many Granny Flats Can I Build in One Plot of Land? 

You may build one granny flat on each lot; unless you have permission under the local planning scheme, you may not further subdivide your lot. 

 

Adding a granny flat to your property is an excellent way to provide space for family or friends. Additionally, you can make rental income from a granny flat. If you are interested in learning more about granny flats or would like to start planning a granny flat for your property, feel free to contact us. We have the experience and skills to build your ideal granny flat. 

Jeremy O’Donoghue

Managing Director at Steel Frames WA

Home-building expert Jeremy O’Donoghue has worked productively in the industry for 15 years, at both ABN and BGC groups. Jeremy is experienced in delivering quality steel frame products that precisely meet client needs.