Home extensions in Auckland
Superior quality home extensions
Qualitas Builders provide a full contract build and project management, prioritising quality craftsmanship, attention to detail, and client satisfaction above all else. We carefully select our sub-trades and work closely with them to ensure they deliver to our expectations.

Qualitas Builders proves renovating adds value to a property
"From start to finish we had a great experience with Qualitas Builders. We’d received a recommendation, but what really decided it for us was how detailed the proposal and costings were. They were definitely the most thorough company and we felt reassured that they’d covered all the bases and we wouldn’t be up for any surprises down the line. We are so proud of our home and are very pleased with the value this renovation has added to our property."
Nico and Claire, Homeowners in Mt Roskill, Auckland

If you need more living space, an extra bedroom or a second bathroom to accommodate your growing family, a ground-level extension is the simplest and most cost-effective way to expand your home.
Decide how much outdoor space you’ll sacrifice and make sure the new layout maintains a natural flow throughout your home. Living areas should be easily accessible from the entrance or hallway, also position bedrooms close to a bathroom.
Qualitas Builders extended this architectural home in Mt Albert, Auckland, the result are stunning and match the existing home.


Spread out: single storey extension
What are the options to extend your home?




Dig deep: create a basement
A basement level maximises under-utilised space beneath your home, while preserving your outdoor area. Develop your existing basement or lift the house to create a new level underneath. Include internal access or create a separate, self-contained living area for a work-from-home space or generating rental income.
Our expert team will guide you through every step of the process, from the initial geotechnical survey, to the civil, engineering and foundation work required to ensure the new level is stable and safe.
Qualitas Builders built the perfect studio unit in this basement extension
Adding a second storey is a great option when space is at a premium or you want to take advantage of a stunning view. This is typically more complex and costly than other extensions, and often requires the existing structure to be strengthened.
Have a loft space? Converting it into an attic room can be a cost-effective way to add a bedroom, home office or craft room… the sky’s the limit!


Raise the roof! Add a second storey


The Auckland Unitary Plan has made it easier to add a second dwelling to your unused front garden or spacious back lawn.
A minor dwelling provides an ideal living solution for aging parents, or can be used as a home office or studio. You could even earn extra income by renting it out long or short-term.


Extend with a minor dwelling
Extending your home is the ideal time to update the exterior too. Recladding and reroofing will improve your home’s structural integrity and weatherproofing, while giving you a cohesive design that makes your property look brand new. Invest in these upgrades to improve insulation, boost energy efficiency and increase your home’s value.
Take the opportunity to reclad and reroof too!




Your trusted Auckland building partner
Choosing your builder is the most important decision you’ll make when building your home. They'll be responsible for your build from the ground up and will manage the construction, materials and sub-trades.
All residential building work is covered by implied warranties for up to 10 years regardless of whether you have a written contract, what the contract terms are and the cost of your building project. Implied warranties are automatic and cover almost all aspects of building work from Building Code compliance to good workmanship and timely completion.

Build with complete peace of mind
As proud members of NZ Certified Builders, we offer access to the Halo 10-Year Residential Guarantee, one of the most comprehensive building protections available in New Zealand.
It goes well beyond the Building Act and Consumer Guarantees Act, safeguarding your home and investment for a full decade after completion. No matter what the future holds, Halo provides long-term peace of mind you can count on.
With Halo you’re covered for:
Loss of deposit
Non-completion, including remedial work
Materials and workmanship for two years after building work is complete
Structural defects for the next eight years from Guarantee Acceptance, including rot and fungal decay (weathertightness)
Up to 26 weeks alternative accommodation expenses while the house is being repaired
Automatically transferable when the home is sold, giving any new owners protection too
Please ask us for the Halo 10-Year Residential Guarantee Homeowner Handbook for full details of guarantee coverage, exclusions and additional benefits. All Halo applications must be submitted before building work starts.

