New Home Builds Sydney
Monstructions is Sydney’s trusted granny flat builder, delivering high-quality secondary dwellings for homeowners across greater Sydney. Whether you need a self-contained granny flat, a studio, or a full two-bedroom secondary dwelling, our licensed team handles everything from DA approval through to handover.
10+ years experience guarantee
10 years guarantee
100% customer satisfaction
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🔥 June Special! Free site inspection + council feasibility check included. Limited to 3 jobs this month. Call 1300 098 730
IS YOUR PROPERTY READY FOR A GRANNY FLAT?
Monstructions specialises in building granny flats across Sydney, delivering quality secondary dwellings that suit the diverse range of homes and block sizes found throughout Greater Sydney. We proudly serve homeowners across every corner of Sydney, from the inner suburbs to the outer growth corridors, with our licensed team handling everything from DA approval through to final handover.
Fully licensed bonded general contracting
Quality Workmanship
Over a decade of renovation and building experience across Sydney
Sydney Granny Flats Built Around Your Property
Sydney is one of the most diverse cities in the world and its housing stock reflects that. From the quarter-acre blocks of the Sutherland Shire to the compact lots of the Inner West, every property is different and every granny flat requires a different approach.
Our team delivers granny flats across all Sydney suburbs. Whether you need a detached studio on a large Cronulla block, an attached granny flat on a compact Hurstville lot, or a premium 2 bedroom dwelling on a family property in Miranda, we have the local knowledge and the right licensed team for the job. We understand Sydney properties because we work on them every day.
Monstructions currently services suburbs across the Sutherland Shire, St George, Inner West, Eastern Suburbs, Western Sydney, Northern Beaches and North Shore.
Our Granny Flat Services
Whether you’re adding a studio for rental income or a full 2 bedroom dwelling for family, our licensed team delivers quality granny flats across Sydney.
Detached Granny Flat
A fully self-contained dwelling separate from your main home.
Attached Granny Flat
Built onto your existing home, sharing one wall.
Studio Granny Flat
A compact, cost-effective single-room secondary dwelling.
2 Bedroom Granny Flat
Spacious secondary dwelling perfect for family or rental income.
Garage Conversion
Transform your existing garage into a fully liveable granny flat.
Council Compliant Builds
We handle all DA approvals and council paperwork for you.
Benefits of Granny Flats
Investing in a granny flat is one of the smartest decisions you can make as a homeowner.
Increased Property Value
Adds $150,000+ to your home’s value
Generate Rental Income
Earn $400-$600+/week from a quality granny flat
House Family
Keep loved ones close with their own private space
Fast DA Approval
We handle all council paperwork for you
Get Started with Monstructions Today!
Are you ready to transform your land into a beautiful and functional space? Contact us today for a free quote and let our granny flat experts bring your vision to life. Experience the quality and dedication that set us apart from the rest.
How Much Does a Granny Flat Cost
in Sydney?
Every granny flat is different. Click the button below to hear back from us within 2 hours!
Studio Granny Flat
Everything you need in a compact, smart design.- Single open-plan living space
- Kitchenette
- Bathroom
- Fully self-contained
- Council compliant
- Fixed price contract
- Tailored to your budget
1 Bedroom Granny Flat
One bedroom design for rental income or family.- Separate bedroom
- Full kitchen
- Full bathroom
- Living area
- Council compliant
- Fixed price contract
- Tailored to your style & needs
2 Bedroom Granny Flat
Two bedrooms for maximum space and rental return.- Two separate bedrooms
- Full kitchen
- Full bathroom
- Living area
- Council compliant
- Fixed price contract
- Fully customised to your vision
Our Renovation Process
Initial Consultation
We start with a free consultation to discuss your ideas and requirements. Our team will guide you through the design possibilities, ensuring your vision is captured.
Design & DA Approval
We design your granny flat and manage the full council approval process.
Construction
Our licensed team builds your granny flat to the highest standard.
Final Inspection
Thorough inspection before handover to ensure everything is perfect.
Why Sydney Homeowners Choose us?
As leading granny flat builders in Sydney, we pride ourselves on our commitment to quality and customer satisfaction. We make building simple, stress-free and done right the first time.
10+ Years of Building Experience
Our team has delivered hundreds of successful builds across Sydney; on time and within budget.
On Time, On Budget
We keep you informed at every step and never surprise you with hidden costs.
Trusted by Sydney Homeowners
From Sutherland Shire to the North Shore, homeowners trust us to deliver.
Licensed and Fully Insured
Every job is handled by licensed professionals. You get quality workmanship backed by full insurance.
Don't Take Our Word For It
"From start to finish the Monstructions team have been very professional, client focused and efficient. The final product is excellent and we would highly recommend them and it’s clear they take great pride in what they do. Great job guys we are delighted with the new kitchen, thanks again."
Claudia T.
"We recently had our new kitchen installed by the Monstructions team, and we couldn't be happier with the results. From start to finish, they demonstrated a high level of professionalism and expertise. We are thrilled with our new kitchen and highly recommend the team to anyone looking for a top-notch kitchen installation experience. Thank you for transforming our space, we feel blessed we found you to build our much anticipated kitchen."
Lisa R.
"The Monstruction boys designed, built and installed the kitchen of our dreams. Very happy with the results. Plenty of storage and we love how smooth all draws work. The whole process was seamless, transparent and straight forward. Highly recommend this company. I’m absolutely happy with their work every time I’m in my kitchen."
Paul C.
Products we use
FAQS
Got a question?
How much does a granny flat cost in Sydney?
Granny flat costs in Sydney typically start from $120,000 for a studio, $150,000 for a 1 bedroom and from $180,000 for a 2 bedroom. The final cost depends on size, finishes, site conditions and council requirements. We provide a free detailed quote so you know exactly what you’re up for before committing.
Do I need council approval for a granny flat in Sydney?
Yes. In NSW most granny flats require a Development Application (DA) or Complying Development Certificate (CDC). We handle the entire approval process for you so you don’t need to deal with council at all.
How long does it take to build a granny flat in Sydney?
From DA approval to handover, most granny flats take 12–20 weeks. The approval process typically takes 4–8 weeks and construction 8–12 weeks. We provide a clear timeline before work begins.
What size granny flat can I build in Sydney?
In NSW a granny flat can be up to 60sqm of floor space. Your block must be at least 450sqm. We assess your property during the free consultation and advise exactly what you can build.
What areas of Sydney do you service?
We service all of Sydney including Sutherland Shire, St George, Inner West, Eastern Suburbs, Western Sydney, Northern Beaches and North Shore.
Suburbs We Service in Sydney
Click your area to learn more