The House Extension Calculator has proven to be a valuable tool for thousands of Australians. It has provided a budget estimate for extension and renovation for people seeking home extension costs since 2013.

It is evident that Australians are rapidly progressing. It is exciting to see that everyone’s looking for ways to improve on their most significant investment, the family home, heritage houses, and much more.

Below is the data chart of various uses of calculators, the results, and data collected in the past 6 months

From the given pie chart, we can see that people in New South Wales (32%) and Victoria (38%) are making the most inquiries.

Around 17% of overall traffic on the calculator is from Queensland.

There’s been an evident growth in Western Australia (6%) and South Australia (7%), which indicates an increased demand for home improvement work in those states.

Please keep in mind that this chart shows the calculator usage across Australia based on location. When population density is considered, calculator usage is evenly spread across all stated and territories.

If you’ve been following the data and information provided by us, you would know that any home extension costs at least around $100,000. It can even reach $1,000,000 or more and even the multi-million dollar mark.

The given flow chart, once again, represents the percentage of majority and minority out of the 100% traffic to the calculator. Accordingly:

• Most Home Renovations, around 91% of the total estimations, are under $300,000.
• 9% of projects are in the $300,000 to $500,000 range. It is assumed that most high-end double-story extensions and renovations fall under this category.
• From the above-given data, we can see that the majority of smaller type extensions and renovation projects cost between $100,000 to $300,000.

A notable 21% also fall below the $100,000 mark for basic type renovation works. Those might be for ensuite and bathroom renovations.

However, home extension costs are fairly diverse, ranging from the $100,000 to the $300,000 mark.

From the collected data, the majority of extensions ranged from 20 m2 to 80 m2 in the cost-effective range. Around 17% of queries hit the requirement above 100 m2 to 150 m2.

Around 4% of queries have been for renovation only type work. This shows that people are using the calculator for mainly extension of around 20 to 80 square metres as an average requirement. Which fits the bill of the average home sizes in Australia.

Determining The Home Extension Cost – Speculations From Data

If we correlate them to the home extension estimation chart, we could -speculate- that 100m2 to 150m2 extensions cost around $300,000 to $500,000.

Meanwhile, most extensions cost around $150,000 to $500,000. It helps us drive out the average cost.

Please Note: This is an assumption or speculation from the collected data:

• 20 m2 extension costed around $200,000
• 40 m2 extension costs around $$300,000
• 60 m2 extension costs around $400,000
• 80 m2 extension cost around $500,000

These are not strict or hard-imposed data, just something collected from the charts.

In this context, going up means the second storey or double storey extensions. Meanwhile, going out is a ground-level extensions or renovations works.

It can been seen that most people are using the calculator for renovation only works or for lower level ground floor extensions (72%).

What is surprising is the 28% of people are using the calculator for larger first floor or double storey extensions. This is exciting as going up has the best visual impact on the streetscape and shows users are looking to not only increase the size but also improve the look of their existing home.

Building materials determine the overall cost efficiency and longevity of your project. There are three primary building materials in use:

• Weatherboards
• Rendered
• Bricks

From the data collected, Weatherboards are a preferable choice for both the ground and second story constructions. Brick fall second in preference, while rendered are the least sought-after materials.

Weatherboards have become a versatile and popular choice worldwide. It is expected for them to rank higher on the list and even stay as a premium choice.

The majority of users (75%), are not considering kitchen renovations when using the extension and renovation calculator. It also fits the bill of the cost estimations. Most extension experts are well-versed in getting the work done without renovating the kitchen.

Out of those who opted for kitchen renovations:

• 25% were after only a basic kitchen renovations. Budget below $20,000.
• 56% took it as an opportunity to enhance the kitchen appearance with moderate renovations. Budget between $20,000 and $30,000.
• and 16% were looking to maximise their kitchen renovation and invest in a delux upgrade of more than $40,000.

Accordingly, basic kitchen renovations cost around $15,000 and moderate around $25,000. Deluxe kitchen renovations are double the moderate’s price and quadruple the price of basic renovations at more than $40,000. These budgets covers cabinets and benchtops only and does not allow for appliances.

Comparatively, with new and changing plans, the need for bathroom renovations increases. Around 82% of people opted for Bathroom renovations when using the extension calculator. Out of which:

• 6% were wanting a Delux bathroom renovation with a budget over $30,000 per bathroom.
• 47% opted for a more moderate bathroom reno. Budget roughly between $20,00 and $30,000.
• And 47% opted for basic renovations with a budget around $10,000.

Around 18% conserved resources and didn’t opt for the bathroom renovations. The cost of bathroom renovations is also similar to kitchen renovations.

From the data, we could correlate that people opted for bathroom or kitchen renovations. A few would’ve opted for both the choices.

The bathroom held priority over the kitchen renovations when upgrading the existing home.

And finally, we conducted a survey to determine the users’ insights that have used the calculator. More than half the users, Fifty two percent (52%), found the results to be around their expected estimations. Some even found them lower than they expected. This is a positive indicator considering the increased cost of building over the past few years.

Forty Eight percent (48%) of users did, however, find that the results were higher than what they expected.

Overall, the Home Extension Cost calculator has favorable results and expectations, making it quite an accurate choice.

Every 6 months these results are updated and trends are emailed to users.

If you’d like to be updated with future trends simply use the online calculator to get an instant budget and join the growing list of satisfied users.