The average house size in Australia today is around 230–245 m², making Australian homes some of the largest in the world.
If you walk through any suburb in Australia, you’ll notice that the houses here are big. Sometimes really big. In contrast, if you go to Melbourne, you will find relatively small houses. So, how big is the average house size in Australia? Let’s find out the answer in this blog.
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How House Size Is Measured in Australia
Australia has some of the largest homes in the world. Recent building data shows that the average house size for newly built homes sits between 230 m² and 245 m².
Back in the 1950s, the typical Australian house was only about 100 m². By the 1990s, houses grew to around 180 m². Today, they’re much bigger because families want more space and open living areas.
First of all, we need to know the dimensions of an average house in Australia. Here, house size is measured in square metres (m²). But there are two different ways builders calculate the total size.
- Internal living area.
- Total built area.
Internal Living Area
When we measure houses, this number is usually the most important one. This includes spaces where you actually live every day. For example:
- Bedrooms
- Living rooms
- Kitchen
- Bathrooms
- Hallways
This is also popularly known as the liveable floor area.
Total Built Area
Some builders include extra spaces as well. These can include:
- Garage
- Alfresco area
- Balcony
- Porch
- Storage areas
So if a house is advertised as 240 m², the internal living area is actually closer to 200 m².
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Average Living Room Size in Australia
The living room is the biggest room in the house. This is where you relax, watch TV, talk with family, and even do your work or study.
In most Australian homes, living rooms are about 20–35 square metres. If you have a big house, you can include open-plan living areas where the living room, kitchen, and dining area all connect together. This design style will make your home feel more spacious.
| Item | Size |
| Living room | 20–35 m² |
| Sofa | 2.0–2.4 m |
| Armchair | 800–900 mm |
| Coffee table | 1.0–1.4 m |
| Walkway clearance | 900 mm |
Average Bedroom Size in Australia
Now you might be wondering, What is the normal size of a bedroom? Let me explain. Bedrooms are smaller than living areas, but still need enough space for furniture and movement. In Australian houses, the dimensions of average bedroom space allow room for:
- A bed
- Wardrobe
- Small desk or bedside tables.
The average bedroom size in Australia depends on whether it is the master bedroom or a standard bedroom. Have a look:
| Bedroom Type | Size |
| Master bedroom | 14–18 m² |
| Standard bedroom | 9–12 m² |
| Guest bedroom | 10–14 m² |
Average Kitchen Size in Australian Homes
Modern Australian homes use open-plan kitchens connected to the dining and living areas.
This layout is common because it creates one large family space. A kitchen is around 10–20 square metres. You can also include features such as:
- Kitchen island benches
- Walk-in pantry
- Butler’s pantry
These additions will increase functionality without making the house feel crowded.
Average House Size Based on Number of Bedrooms
House size depends on the number of bedrooms you want. Here’s a table showing the dimensions of an average house based on bedroom count.
| House Type | Average Floor Area |
| 2-bedroom house | 90 – 140 m² |
| 3-bedroom house | 140 – 200 m² |
| 4-bedroom house | 200 – 260 m² |
| 5-bedroom house | 260 – 350 m² |
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Average Floor Area by Housing Type (m²) | 2015 – 2025
| Period | Houses | Townhouses | Apartments |
| ( Area in m2 ) | |||
| 2015–16 | 231.1 | 154.5 | 111.8 |
| 2016–17 | 233.8 | 157.8 | 107.9 |
| 2017–18 | 232.6 | 147.7 | 108.2 |
| 2018–19 | 229.8 | 157.1 | 107.6 |
| 2019–20 | 236.7 | 159.7 | 123.8 |
| 2020–21 | 230.4 | 166.0 | 116.1 |
| 2021–22 | 232.3 | 158.6 | 113.1 |
| 2022–23* | 231.0 | 160.2 | 112.4 |
| 2023–24* | 229.5 | 162.0 | 111.0 |
| 2024–25* | 228.7 | 163.5 | 110.2 |
*Estimated continuation based on recent trends.
Popular Three Room House Design
A three-bedroom house design remains one of the most practical layouts. Most three-room house design homes follow a similar structure:
- Master bedroom with ensuite
- Two smaller bedrooms
- One main bathroom
- Open kitchen and living area
- Laundry room
- Garage
The total size of these homes usually ranges between 150 m² and 190 m².
Why Australian Homes Are So Large
There are a few reasons why the average house size in Australia is bigger than in many countries.
Larger Land Blocks
Suburban land blocks often range from 350 m² to 600 m², giving luxury home builders malaga room to design bigger homes.
Open Living Spaces
Australian homes love open-plan kitchens and living areas. These spaces can easily take up 40–60 m² alone.
Outdoor Lifestyle
Many houses include outdoor spaces like:
- Alfresco areas
- Decks
- Patios
These can add 15–25 m² to a home’s usable area.
Building the Right-Size Home in Perth
Many homeowners work with affordable custom home builders Perth to design homes that match their land size and budget.
Custom builders like PDCD Homes can help you to decide:
- Room sizes
- Layout efficiency
- Storage spaces
- Future expansion options
READ MORE: Guide to Home Building Process in Perth
PDCD Homes | Your Dream Home Starts Here
When you plan carefully and work with the best builders malaga, you can create a home that feels spacious without wasting space. So, build your dream home with PDCD Homes. Our team will guide you from the first design to the final handover, making the whole process easy and stress-free.
