How much does a granny flat cost?
October 5, 2023
How much does a granny flat cost?
‘How much does a granny flat
cost?’ asked one of our best friends. ‘Between $180,000 and $260,000 depending on size’, was my well-rehearsed line, thinking it was a fairly obvious answer to an even more obvious question.
She laughed and said, ‘Oh, I thought you were going to say $20,000!!’ then we both laughed – hard!
From there we carried the jovial conversation forward imagining the humble, unapproved abode we could create for her $20,000 perceived budget – dirt floor, straw-thatched roof, beaded doorways, etc. On went the ramblings, and the laughter continued.
This conversation came back to me a few days later as I considered the misconception about what a modern-day granny flat is, and what it truly costs in today’s market; after all, if my BFF has no idea, how could we expect the general public has any idea when they begin the enquiry journey?
BCC Homes
is building quality turnkey homes that are one or two-bedroom, but due to the size, are called granny flats, a bit of an outdated term - we know!
The term ‘Tiny Homes’ has been used and refers to relocatable container homes, so that term doesn’t accurately describe what we do either.
We include ceiling fans, dishwasher, roller blinds, flyscreens, floor coverings – even a separate letterbox if/when required. It’s just like a new traditional home you would build, minus a couple of bedrooms and a garage.
There are some variables to consider with costing, such as whether the property has access to town services or is on septic, engineering requirements, bushfire ratings, and location to the main dwelling. However, here is a rough guide to some pricing:
50m2 - 59m2 granny flat will cost between $165,000 - $195,000
60m2 - 69m2 granny flat will cost between $190,000 - $225,000
70m2 - 80m2 granny flat will cost between $225,000 - $260,000
* Above pricing is based on slab-on-ground construction only.
Founded by husband-and-wife team Sam and Krystle Barnett, BCC Homes is a family-owned company specialising in custom Granny Flats and renovations across South-East Queensland. After more than a decade in the construction industry, including over 1,200 homes built under Sam’s licence, we recognised a gap in the market, and an opportunity to build something that truly made a difference in people’s lives. That moment came when we met a homeowner who had been taken advantage of by another builder. Rather than walk away, Sam was driven to help. From that experience, BCC Homes was born: a business built on trust, service, and the belief that everyone deserves a quality home delivered with integrity. Our mission is clear: deliver exceptional, fairly priced housing solutions, built to the highest standards. Our vision: to become a leader in Granny Flat construction by aligning with trades, suppliers, and clients who share the commitment to quality and community. Granny Flats are so much more than just additional dwellings, they’re meaningful extensions of the home, spaces where memories are made, and family connections are deepened. Whether it becomes a first home for adult children or a forever home for parents or grandparents, a Granny Flat carries real emotional weight. That’s why we approach every build with the same level of care, respect, and thoughtfulness it deserves. Because these homes are built in the heart of family backyards, the relationship between builder and client must be strong, and rightly so. From day one, we’re hands-on, attending site inspections together, answering questions personally, and designing tailored solutions to suit each family’s unique needs. We don’t just build spaces, we create environments that feel like home from the moment you step inside. Behind the scenes, our systems are sharp and refined. From efficient qualification processes and transparent contracts to weekly team meetings and digital job tracking, every project is carefully managed to ensure smooth delivery and happy clients. But what truly sets BCC Homes apart is how we make people feel. Our clients aren’t treated like a number, they’re welcomed like family. Whether it’s a handshake or a heart-to-heart conversation on-site, the BCC experience is built around connection, respect, and results. Today, our growing referral base is a testament to that approach. With a trusted team of highly skilled trades and a clear passion for the craft, we continue to help everyday families unlock the potential of their property, one Granny Flat at a time. Clic k here to b ook a discovery call .
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