Granny Flat Builders The Rocks
Monstructions specialises in granny flats The Rocks, building quality secondary dwellings for homeowners across this iconic harbourside precinct. Our licensed team handles everything from DA approval through to handover, proudly serving The Rocks and nearby suburbs including Mosman, Chatswood and Willoughby.
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 in The Rocks, delivering thoughtfully designed secondary dwellings that respect the heritage character of this iconic harbourside precinct. We’re proud to serve homeowners throughout The Rocks and nearby North Shore suburbs including Mosman and Chatswood, with our licensed team managing everything from DA approval through to handover.
Fully licensed bonded general contracting
Quality Workmanship
Over a decade of renovation and building experience across Sydney
The Rocks Granny Flats Built Around Your Property
The Rocks features a unique mix of heritage sandstone cottages and converted warehouses, with many properties dating back to the 1800s alongside modern apartment developments. Most residential blocks are compact, requiring careful design to maximise space while respecting heritage overlays. These established properties are ideal for well designed secondary dwellings that complement the historic streetscape.
We service The Rocks and surrounding North Shore suburbs including Mosman, Chatswood, Willoughby, Cremorne, Neutral Bay and North Sydney. Our team has extensive knowledge of Sydney Council requirements and heritage considerations specific to this area. We design granny flats tailored to smaller urban blocks, ensuring compliant and attractive secondary dwellings that suit the local character.
The Rocks property market remains highly sought after due to its harbour proximity and vibrant tourism precinct. Strong rental demand from corporate professionals and short term visitors drives returns, with quality granny flats achieving $650 to $800 per week. Building a secondary dwelling now allows homeowners to capitalise on this premium location while adding significant property value.
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.
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.
How Much Does a Granny Flat Cost in The Rocks?
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
Why The Rocks 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
"It took me a couple of months of research before choosing Monstructions. They have been nothing but amazing. They were extremely helpful throughout the process, made great suggestions to help me overcome some obstacles, assisted with any changes I wanted made to the flat and was very quick with responses. They took care of all the permits and made it was very easy and smooth process. Quality finish and craftsmanship. I'm so happy and I would highly recommend them to everyone. Thank you to the team for completing the flat in a matter of months, thank you for giving me a beautiful space I can call home. I absolutely love it."
Joanne T.
"We recently received handover of our granny flat and we all couldn't be happier! From the initial meetings about design and budget right through to completion, everyone has been an absolute pleasure to deal with. The project was delivered early, on budget and the finishes are immaculate. My mum is thrilled to move into her house, we highly recommend Monstructions to anyone looking to build a granny flat!"
Kimberly R.
"We found our experience with Monstructions to be excellent, from start to finish. Communication lines always open, clear and organised, delivered on everything they said they would in a timely fashion. The quality of workmanship is outstanding, and the final result exceeded our expectations. Our new space is not only beautifully designed but also incredibly functional. Thank you for making this such a positive experience!"
Chris C.
Products we use
FAQS
Got a question?
How much does a granny flat cost in The Rocks?
Granny flat costs in The Rocks start from $120,000 for a studio, $150,000 for a one bedroom, and $180,000 for a two bedroom design. Final costs depend on your specific block constraints, finishes selected, and council requirements including any heritage considerations. We provide detailed fixed price quotes after assessing your property.
How long does it take to build a granny flat in The Rocks?
Building a granny flat in The Rocks typically takes 12 to 20 weeks from start to finish. DA approval usually takes 4 to 8 weeks, followed by 8 to 12 weeks for construction. Heritage properties may require additional approval time, which we factor into your project timeline.
Do I need council approval for a granny flat in The Rocks?
Yes, all granny flats in The Rocks require council approval under NSW planning laws, either through Development Application or Complying Development Certificate. Our team handles the entire approval process on your behalf, liaising with Sydney Council and ensuring all documentation meets requirements. We manage everything so you don’t have to navigate the red tape.
Can I build a granny flat on a heritage property?
Many heritage properties in The Rocks can accommodate granny flats with appropriate design and council approval. We work closely with Sydney Council’s heritage advisors to ensure your secondary dwelling complements the existing character. Our designs respect heritage overlays while delivering functional, modern living spaces.
Do you service all areas of The Rocks and surrounding suburbs?
We service all areas of The Rocks and surrounding suburbs including Mosman, Chatswood, Willoughby. Call 1300 098 730 to discuss your project.