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Your Trusted Partner for Home Extensions in Melbourne
Supa Group has been a trusted name in Melbourne's home extension and renovation industry since 1974. As a multi-award-winning builder with over 50 years of continuous membership in the Housing Industry Association (HIA) and Master Builders Victoria, we combine deep industry expertise with a commitment to quality craftsmanship. Our team specialises in ground floor extensions, second-storey additions, and comprehensive renovations, delivering tailored solutions that enhance liveability and property value.

With a proven end-to-end process featuring fixed pricing, guaranteed completion times, and complimentary aftercare, we prioritise transparency and client satisfaction. Our long-standing reputation is built on ethical practices, extensive trade networks, and a customer-first approach that ensures every project aligns with individual needs and budgets.
Services
Ground Floor Extensions Second Storey Extensions Renovations
Details
  • Year established: 1974
Highlights and features
  • We offer over 50 years of continuous experience in Melbourne home extensions
  • Our fixed-price contracts guarantee no unexpected cost overruns
  • We provide guaranteed completion times with 10-year structural warranties
  • Our HIA and Master Builders accreditation demonstrates industry leadership
  • We include complimentary aftercare services for ongoing client support
Associations and certifications
  • HIA
  • Master Builders Victoria
  • VBA Registration Number: CDB-U 52357
What people say
Friendly and approachable Completed on time Superior design Cost-effective solution Quality workmanship
Services
Ground Floor Extensions
Our ground floor extensions maximise living space while maintaining your home's character. Using 50+ years of local experience, we create custom designs for kitchens, living areas, and bedrooms with fixed pricing and guaranteed timelines. Each project includes 3D visualisation, council approval assistance, and energy-efficient upgrades. Clients benefit from our extensive trade network and in-house design team that delivers functional, value-adding solutions without requiring additional architectural services.
Second Storey Extensions
Specialist double-storey extensions that increase property value while preserving garden space. Our HIA-awarded team handles structural complexities, stairwell design, and heritage considerations across Melbourne. Projects include master retreats, family zones, and outdoor living areas with guaranteed completion dates. We manage council approvals and provide 10-year warranties, ensuring minimal disruption to homeowners during construction.
Home Renovations
Comprehensive renovation services covering kitchens, bathrooms, and whole-house transformations. Our designers specialise in period homes while incorporating modern functionality. The process includes free consultations, 3D design walkthroughs, and fixed-cost contracts. We handle council permits and coordinate specialist trades to deliver energy-efficient upgrades that enhance both aesthetics and property value.
People
Neil Gardiner
Director
Bringing finance planning and industry expertise to his role, Neil has driven Supa Group's growth into Melbourne's leading extension builder while maintaining its family-focused ethos since 1974.
Matt Howard
Director of Building
With decades of construction experience, Matt oversees all building operations, ensuring technical excellence and client satisfaction across Supa Group's award-winning extension and renovation projects.
Questions
Do I need planning permission for home extensions?
We handle all council approvals as part of our service. Our team will advise on specific requirements for your property's location and extension type.
Can I live in my home during construction?
Most clients remain in their homes during extensions. We ensure access to essential facilities and provide regular progress updates to minimise disruption.
How are extension costs determined?
Costs depend on size, complexity, and materials. We provide fixed-price contracts after detailed site assessments to ensure budget certainty.
What's included in your 10-year warranty?
Our structural warranty covers all load-bearing components, providing long-term assurance for your investment in home extensions or renovations.
How long do typical projects take?
Project timelines vary but average 6-12 weeks. We provide guaranteed completion dates in contracts and maintain strict construction schedules.
Do you handle heritage property extensions?
Yes, we specialise in extending period homes while preserving architectural integrity, with expertise in Victorian, Federation, and Californian Bungalow styles.
Reviews (4)
Matt Glenister
Sep 11, 2021 Report
From start to finish the consultation was great. Didn't push us into what they wanted, but actually pointed out how things could be improved as we went through the design process. The build itself was flawless. We engaged our own window, kitchen and floor company, but the coordination from Supa Group was also there. Whilst being our responsibility, they stepped in when needed, to help clarify or direct. Amazing job. We're doing upstairs next with these guys.
Ann Gedye
Jun 10, 2021 Report
Supa Group were fantastic - right from the first visit from Joe. He was well prepared and designed a great extension and renovation of the existing house. Our input and ideas were all accommodated.
Braidon did an excellent job getting all the work happening - despite roadworks, Covid-19 (including the loooong lock-down) and us living in the house with 2 kids and a dog. No request was too much hassle and we never felt like we were just 'another job'. The tradies were professional and polite. The communication with the office was always professional and friendly. If we were to renovate again
Paul White
Sep 07, 2020 Report
Supa Group were great to deal with from start to finish. From the initial visit Joe Caputi listened to what we wanted had some great suggestions. Gerard managed the project brilliantly even with the difficulties of lock down and the entire build (kitchen, bathroom, laundry, study, bedroom, dining area) was wrapped up on time in four and a half months. Our variations during the build were all dealt with quickly and with no fuss by the office and all the trades knew exactly what they were supposed to do. Wonderful job!
Shaun Curtis
Aug 16, 2020 Report
I won't hesitate in recommending Supagroup to any home owners who are looking to extend their home or in a quandary on whether to move or extend. Supagroup were incredibly helpful in creating a suitable design which met our specification and Budget. The build was a breeze, we weren't required to move out for any of the build phases and the trades were very professional. Scott was our site supervisor who managed the entire project - Scott was very helpful and onsite most days to keep us informed on the status and so on. From our perspective, the build was successful and hassle free. We are more