How Much Does It Cost to Build a Granny Flat

How Much Does It Cost to Build a Granny Flat

If you’re thinking about adding a granny flat to your property, you’re probably asking yourself: how much does it cost? 

Whether you’re looking for extra space for your family, renting out the flat for some extra income, or just need a little privacy, a granny flat can be a great option. 

But before you dive into construction, it’s important to understand the cost of building a granny flat and what factors can impact the price.

What Exactly is a Granny Flat?

A granny flat is a small, self-contained living space that’s usually built in your backyard. 

It’s like having a mini home on your property, complete with a kitchen, bathroom, and living areas. It’s perfect for elderly relatives (hence the name “granny flat”), but can also be used for guests, rental income, or as a home office.

So, How Much is it to Build a Granny Flat?

Now, let’s get to the heart of the matter – how much is it to build a granny flat? The answer depends on several factors. On average, the average cost to build a granny flat can range anywhere from $70,000 to $200,000. 

This wide range is because of different styles, sizes, locations, and finishes. 

Here’s what can affect the cost of building a granny flat:

1. Size – The bigger the granny flat, the more expensive it will be. A small, one-bedroom flat will cost less than a larger two-bedroom or three-bedroom flat.

    

2. Location – If you’re building in an area with higher construction costs (like a big city or a region with expensive land), expect to pay more.

    

3. Design and Style – Fancy finishes, high-end materials, and custom designs will increase the cost of building a granny flat. A simple, standard design will be more affordable, while a luxury granny flat can push the price up.

    

4. Council Approvals and Permits – Depending on where you live, you might need to get planning permission and council approval, which can come with additional fees. Some areas might also require specific building standards, which could raise costs.

    

5. Utilities and Features – Adding things like plumbing, electricity, and gas lines (if not already available) can add to the cost. Plus, features like air conditioning, insulation, and custom kitchens or bathrooms can all add to your overall bill.

    

Breaking Down the Average Cost to Build a Granny Flat

To give you a clearer idea, let’s break down some possible costs:

• Small Granny Flat (studio or one-bedroom) – Typically, this might cost between $70,000 and $100,000.
• Medium Granny Flat (two bedrooms) – Expect to pay around $100,000 to $150,000.
• Large Granny Flat (three bedrooms) – These can range from $150,000 to $200,000, depending on design and location.

Remember, these are just estimates, and the actual cost of building a granny flat will vary based on the factors mentioned above.

How Can You Save on Building a Granny Flat?

Now that you know the average cost to build a granny flat, you might be wondering how you can keep costs down. Here are a few tips:

• Stick to a Simple Design – The more intricate your design, the more expensive it will be. Opt for a basic floor plan to save some money.
• Shop Around for Builders – Don’t settle for the first quote you get. It’s important to get multiple quotes from builders to ensure you’re getting the best deal.
• DIY Some Parts – While professionals should always handle certain things like plumbing and electrical work, there may be areas where you can save by doing the finishing touches yourself, like painting or landscaping.

If you’re ready to take the next step in building your granny flat, here’s Gattara. As leading granny flat builders on the Gold Coast, we specialise in creating affordable, high-quality granny flats that suit your budget and lifestyle. 

Our team is here to guide you every step of the way—from design to construction—so you get exactly what you need.

Turn your granny flat dream into a reality