CDC-Ready 3 bedroom granny flats • Sydney NSW
3 Bedroom Granny Flat Cost Sydney
3 designs. From $163,000. The most living space for families and the highest rent estimates of any type.
3 designs available
3 Bedroom Granny Flat Cost Sydney
Our 3 bedroom range starts from $163,000 for The Parramatta, $166,000 for The Triplex, and $195,000 for the Madison, which adds an integrated garage across an 82m² footprint. Every price is confirmed in a detailed, transparent quote after your free site inspection.
Three bedrooms suit families, multi-generational living, and investors after family tenants. The Parramatta is built to the 60m² footprint allowed under complying development. The Triplex (63m²) and Madison (82m²) are larger, so we confirm the right approval pathway, CDC or DA, for your block at your free site inspection.
3Designs
$163kStarting from
60–82m²Floor areas
3 bedEvery design
3 designs
3 bedroom designs and prices
Prices are indicative, confirmed in your quote after a free site inspection. For the Triplex and Madison, we confirm the approval pathway for your block on site.
CDC-Ready 
CDC-Ready 
CDC-Ready No surprises
What’s included at this price
Every build comes with our standard inclusions, so you know exactly what you are getting. No hidden costs, no surprises.
Free site inspection
We assess your block and give you a detailed, transparent quote.
Approvals handled
CDC or DA, managed for you, with our 4-week approval guarantee.
Floor to ceiling tiles
A fully tiled bathroom, floor to ceiling.
Soft closing cabinets
Soft closing cabinetry throughout.
Separate electricity meter
Your granny flat gets its own meter.
Appliances, wardrobes and laundry
Quality appliances, wardrobes and laundry included.
Daikin air conditioning
A Daikin split system air conditioner.
6-year structural warranty
Every build is backed by a 6-year structural warranty.
The Madison also includes an integrated garage.
What affects your 3 bedroom price
Floor area and layout
The Parramatta and Triplex are similar in size and price (60m² and 63m²). The Madison is larger at 82m² and includes an integrated garage, which both add to the build cost. All three deliver three bedrooms.
CDC vs DA pathway
The Parramatta is built to the 60m² complying development footprint. The larger Triplex and Madison may need a DA depending on your block. We check this at your free site inspection before you decide, at no cost.
Site conditions
Slope, soil type, drainage, access and existing services all affect the final cost. We inspect every site before we quote, so there are no hidden costs or surprises later.
Who is a 3 bedroom right for?
Family tenants
Investors targeting tenants who need dedicated bedrooms.
Multi-generational living
Room for parents, grandparents, or adult children.
Growing families
More space than a 1 or 2 bedroom can offer.
Larger blocks
Make the most of a larger backyard.
Common questions
3 bedroom granny flat FAQs
How much does a 3 bedroom granny flat cost in Sydney?
Our 3 bedroom designs start from $163,000 for The Parramatta. The Triplex starts from $166,000 and the Madison from $195,000 (82m², with an integrated garage). Your final price is confirmed in a detailed, transparent quote after your free site inspection.
What’s the maximum size for a granny flat under CDC?
Under NSW SEPP (Housing) 2021, a secondary dwelling under complying development is generally limited to 60m² of floor area. The Parramatta is built to that footprint. The Triplex (63m²) and Madison (82m²) may require a DA depending on your block. We confirm the pathway at your free site inspection, and manage the approval either way.
What rent can I earn from a 3 bedroom?
Our cost and ROI calculator puts the Sydney average for a 3 bedroom granny flat at around $520 to $620 per week, the highest of any type, with higher-spec finishes lifting that further. Rents vary by suburb, so speak to a local property manager for specific figures.
How long does a 3 bedroom granny flat take to build?
Generally it takes 14 to 16 weeks for your granny flat to be built after the initial site setup, and most projects are completed within 12 to 20 weeks from approval. We give you a clear schedule before work starts.
Can I see your finishes in person?
Yes. Visit our display home at 2 Mary St, Blacktown NSW 2148 to see our finishes, materials, and fit-out quality in person. Open Monday to Friday 9am to 5pm and Saturday 10am to 3pm.
What does a 3 bedroom earn?
Our cost and ROI calculator puts the Sydney average for a 3 bedroom granny flat at around $520 to $620 per week, the highest rent estimate of any type. Three bedrooms appeal to family tenants who need dedicated bedrooms.
At $570 per week, The Parramatta built for $163,000 would return its build cost in around 5.5 years from rent alone. Figures are indicative: speak to a local property manager for suburb-specific rents, or model your own numbers in our cost and ROI calculator.
$29,640Gross rent per year at $570/week
~5.5 yrsTo return build cost (Parramatta)
$163kParramatta starting price
VariesSuburb rates vary
What our clients say
4.9 stars across 200+ verified Google reviews
★★★★★
We started our build in October 2021 and we have successfully received a beautiful home for my mum to move into. Every step of the way, each team member of Five Star Builders held our hand and guided us. Tony helped us greatly in all aspects of admin and council dealings. Sarkis and Anthony are super helpful, friendly and professional yet personable. We were very impressed by the builders using "old school" techniques, building our granny flat using skill and brains. I have no problem recommending the team at Five Star Builders to anyone that needs a granny flat.
Lisa O'Connor Verified Google review ★★★★★
I met 5 Star Builders through a referral and they were fantastic throughout the whole process. We built a granny flat on the Central Coast and met Zahi onsite for an inspection, extremely knowledgeable, honest with council requirements and transparent with pricing. Construction went really well and the team pushed hard to get through the build as quickly as possible. We are so impressed with the quality, and it was easy to obtain a tenant in the end. Highly recommended.
Lise B Verified Google review ★★★★★
I can't thank Samantha enough for introducing me to 5 Star Builders. Recently they completed my granny flat. What a job… Thank you Sarkis, thank you Anthony and thank you office staff. Very happy customer, best service, honest, and very professional. 10 stars for a job well done. I highly recommend 5 Star Builders. Stand by guys for my next project.
George Issa Verified Google review ★★★★★
5 Star Granny Flats did a tremendous job with our granny flat, I am extremely happy. Sarkis and Sharif were on top of the job all the time; they made sure everything was completed on time and ran smooth. Nicola and Tony did a great job answering all my questions and were efficient with all paperwork. With prices going up, 5 Star kept to their word and did not change the prices. I would recommend 5 Star Builders 100%.
Neomai Miko Verified Google review ★★★★★
We built our granny flat with 5 Star Granny Flat builders. We are very happy with the entire process, construction completed on time and within the initial agreed budget. The field supervisor Sam is always available for suggestions and questions, very knowledgeable and helpful throughout. The office team was very supportive and quick in responding to all emails. Overall we are very happy with the outcome; we highly recommend this builder.
Rajesh M Verified Google reviewMaximum space for your family or tenants. Let’s build it.
Free site inspection and a detailed, transparent quote. No hidden costs, no obligation.
A designer comes back to you within one business day.
Come visit
Our display home
Visit our display home to experience the quality for yourself, touch the finishes, test the materials, and explore the full range of design options available to you. You'll speak directly with our experienced granny flat designers and visualise what your own space could look like.
📍 2 Mary St, Blacktown NSW 2148
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