Granny Flat Builders Mortdale
Monstructions specialises in granny flats Mortdale, building quality secondary dwellings for homeowners across this accessible St George suburb with affordable family homes. Our licensed team proudly serves Mortdale and nearby suburbs including Hurstville, Penshurst and Oatley, handling everything from DA approval through to handover.
10+ years experience guarantee
10 years guarantee
100% customer satisfaction
Get A Free Quote Now!
🔥 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 Mortdale, delivering quality secondary dwellings that complement the suburb’s affordable family homes on spacious blocks with excellent train connectivity. We’re proud to serve homeowners throughout Mortdale and nearby suburbs including Hurstville and Penshurst, 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
Mortdale Granny Flats Built Around Your Property
Mortdale features predominantly post war and 1960s family homes set on generous blocks, typically ranging from 550 to 700 square metres. These spacious blocks provide excellent opportunities for granny flat construction, with most properties offering good side or rear access. The established nature of the suburb means many homes sit well forward on their blocks, leaving ample space for a quality secondary dwelling.
We service Mortdale and surrounding suburbs including Hurstville, Penshurst, Oatley, Peakhurst and Riverwood, delivering studio, one bedroom and two bedroom granny flats tailored to local block sizes. Our team has extensive knowledge of Georges River Council requirements and planning controls specific to the St George area. We design each granny flat to maximise the potential of your property while complementing the existing family home.
Mortdale’s property market remains strong due to excellent train access to the city and Central Station in under 30 minutes, attracting young families and professionals. Rental demand is consistently high, with granny flats achieving around $450 to $550 per week depending on size and finishes. Building a granny flat now allows homeowners to capitalise on this demand while adding significant value to their property.
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 Mortdale?
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 Mortdale 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 Mortdale?
In Mortdale, granny flat costs start from around $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 conditions, choice of finishes, and any specific Georges River Council requirements. We provide detailed quotes tailored to your property and needs.
How long does it take to build a granny flat in Mortdale?
The typical timeline for a granny flat in Mortdale includes 4 to 8 weeks for DA approval through Georges River Council, followed by 8 to 12 weeks for construction. Overall, you can expect the entire process from application to completion to take between 12 and 20 weeks. We manage the entire timeline to ensure a smooth and efficient build.
Do I need council approval for a granny flat in Mortdale?
Yes, all granny flats in Mortdale require council approval under NSW planning laws, either through Development Application or Complying Development Certificate pathways. Georges River Council has specific requirements for secondary dwellings that must be met. Monstructions handles the entire approval process on your behalf, ensuring all documentation and designs meet council standards.
Will a granny flat fit on my typical Mortdale block with side access?
Most Mortdale blocks of 550 square metres or larger with side access are well suited to granny flat construction. Georges River Council requires specific setbacks and site coverage limits, but the typical block dimensions in Mortdale provide good flexibility for one or two bedroom designs. We assess your specific property during our free consultation to determine the best layout and size for your block.
Do you service all areas of Mortdale and surrounding suburbs?
We service all areas of Mortdale and surrounding suburbs including Hurstville, Penshurst, Oatley and throughout the St George region. Call 1300 098 730 to discuss your project and arrange a free consultation.