We are experienced renovation builders who deliver quality workmanship, practical solutions, and a better renovation experience.
Renovations are very different to new builds, requiring a different skillset, experience, and an ability to adapt and problem solve.
Unlike some builders who take on renovations as a side to new builds, renovation work is something our team genuinely enjoys. From improving layouts to modernising spaces, we believe our passion for renovations is reflected in both the experience we provide and the quality of the finished result.
One of the biggest frustrations homeowners face during renovations is feeling left in the dark.
We believe good communication is just as important as good workmanship, which is why we keep you informed and involved throughout every stage of your project.
We take ownership of your project and are proud to deliver an exceptional result.
When you work with Gareth Davis Builders, you work directly with Lauren and Gareth, an experienced local builder who remains actively involved throughout your renovation.
Renovations often uncover unexpected challenges, especially in older homes.
Our experience allows us to problem solve efficiently, communicate clearly, and keep projects progressing smoothly while minimising stress for you and your family.
We deliver renovations that not only look great but are built properly to stand the test of time. From trusted subcontractors to careful finishing details, quality is at the centre of everything we do.
As a family-run North Canterbury building company, much of our work comes from referrals and repeat clients, which is very telling of the service we offer.
Homeowners choose us because they value honest advice, reliable communication, and a renovation experience that feels professional, organised, and well managed from start to finish.
Your home should evolve with you, supporting the way you live now and the way you want to live in the future. Whether you need more space for a growing family, a better layout for everyday living, or want to modernise an older home, a well-planned renovation can completely transform how your home feels and functions.
At Gareth Davis Builders, we specialise in high-quality renovations and extensions across Christchurch and North Canterbury. From full home renovations and garage conversions to seamless house extensions and layout reconfigurations, we combine renovation expertise, practical problem-solving, and quality craftsmanship to create spaces that are functional, timeless, and built to last.
This Christchurch renovation project in Hillmorton involved upgrading key areas of the home to improve both functionality and overall presentation.
A full house renovation transformed this original 1950s Waikuku Beach bach into a modern family home while retaining its original character and charm.
A large-scale transformation, restoring a severely deteriorated 100-year-old building back to life through an extensive structural renovation.
For more before & afters, head to our portfolio!
Transform your entire home with a complete renovation.
Whether you have a specific vision or need expert guidance, we work with a range of home styles — from modern builds to architectural masterpieces and character homes — delivering functional, beautiful spaces with quality craftsmanship at the core.
Reconfigure your space for better flow and usability.
Improve your home’s flow, functionality, and light with expert structural alterations. Whether removing walls, reconfiguring layouts, or expanding rooms, we ensure all modifications are safe, efficient, and compliant, creating a better, more open living space.
More Space Without Moving
Need an extra bedroom, bigger living area, or home office? A seamless extension adds space, value, and functionality without the hassle of moving. We manage the construction process and work closely with the designer to ensure a seamless match with your existing home. For more information visit our extension services page.
Renovations require a very different skillset to new builds. Working with existing homes involves problem solving, careful planning, great communication, and attention to detail. At Gareth Davis Builders, renovations and extensions are a core part of what we do, and our team genuinely enjoys the process of transforming homes.
For more detailed information, read our article on the importance of choosing a specialist renovation builder.
Yes. We manage the renovation process from planning through to completion. We coordinate subcontractors, scheduling, and all project management to help keep your project running smoothly.
Absolutely, we love to help with the planning and design phase. We have trusted designers and architects we work along side to provide you a full design and build service, or we can work with a designer of your choice.
Renovation costs can vary significantly depending on the size of the project, the age of the home, the level of finish, and whether structural work is involved. Smaller renovations may involve updating a single space, while full home renovations and extensions require more detailed planning and investment.
For a more detailed breakdown of renovation costs, budgeting tips, and the factors that can affect pricing, read our article on what a home renovation can cost in Christchurch and North Canterbury.
Every renovation is different and it depends on the size and complexity of the project. Smaller renovations like bathrooms can take as little as four weeks, while larger full-home renovations and extensions can take several months. We provide realistic timelines and keep clients informed throughout the project.
In some cases, yes. This depends on the scale of the renovation and which areas of the home are being worked on. For major renovations, it is sometimes more practical and comfortable to temporarily move out during parts of the project.
We work across North Canterbury in the Waimakariri and Hurunui districts. We focus Rangiora, Kaiapoi, Pegasus, Woodend, Amberley and surrounding areas, and we also service the northern suburbs of Christchurch.
Yes, we typically work with fixed-price contracts to give you certainty and peace of mind around the overall cost of your project. However, with renovation work, there can be unforeseen elements that only become clear once the job is underway. In these cases, we’ll discuss any required variations with you, and it’s wise to have a contingency budget in place to cover unexpected work if needed.
The best place to start is by getting in touch with us for an initial conversation. We can discuss your ideas, budget, timeframe, and whether your project is likely to be a good fit before moving to the next stage.
Explore our journal posts which highlight renovation case studies and offer practical advice and insights to help you plan and get the most out of your renovation.
Can I Extend My House? What Christchurch Homeowners Need To Know
Rotted to Restored | A 100-Year-Old Home Renovation In Christchurch
Green Home Loans in Canterbury: How NZs Major Banks Can Help Fund Smart Renovations
We meet with you to discuss your goals, budget, timeline, and what’s possible for your property. If the project appears feasible, we’ll guide you through the next steps.
We don’t believe in guesswork. For most renovation and extension projects, accurate pricing can only be provided once plans have been completed.
If you already have plans, we can move straight into pricing. If not, we can connect you with one of our trusted design partners (or work with a designer of your choice) to prepare concept and pricing plans, and then we can move into pricing your project.
For smaller projects that don’t require consent, we can often provide pricing without formal plans.
Once pricing plans are available, we prepare a detailed quotation. This includes obtaining supplier and subcontractor pricing to ensure the quote is accurate and comprehensive.
We offer two pricing options:
Once you’re comfortable with the pricing, your designer can lodge the plans for building consent. If Council requires any changes during the consent process, we’ll review and update the pricing if required.
When consent is issued, we’ll prepare your Master Build Contract and provide a 10% deposit invoice. Once the contract is signed and the deposit is received, we can schedule your project and begin preparations.
Our team completes the construction work, keeps you informed throughout the project, and hands over your completed renovation ready to enjoy.
We make it easy with our free renovation guide. We send it straight to your inbox!
Planning a renovation? You may be able to access low-interest or interest-free Green Home Loans through major New Zealand banks including ANZ, Westpac, ASB, and BNZ to help fund energy-efficient upgrades to your home.
These loans can assist with improvements such as heat pumps, insulation, double glazing, ventilation systems, hot water upgrades, solar power, rainwater tanks, waterproofing, and more. This helps create a warmer, healthier, and more energy-efficient home. Depending on the bank, eligible homeowners may be able to borrow up to $80,000 at low or even 0% interest rates for a set period.
For more information check our our guide to the green loans offered by our major banks.
Whether you’re still exploring ideas or ready to begin your renovation, as experts, we are here to guide you through the process. With clear communication, careful project management, and exceptional craftsmanship, we deliver high-quality renovations designed to feel stress-free and enjoyable. Get in touch to discuss your project, get expert advice, or request a quote.
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Servicing Locations: Amberley | Ashley | Avonhead | Balcairn | Belfast | Bishopdale | Bottle Lake | Broomfield (Hurunui) | Bryndwr | Burnside | Burwood | Casebrook | Christchurch | Clarkeville | Cust | Edgeware | Fendalton | Fernside | Harewood | Ilam | Kaiapoi | Loburn | Leithfield | Linwood | Mairehau | Mandeville | Marshland | Mcleans Island | Merivale | New Brighton | Northcote | Northwood | Ohoka | Opawa | Oxford
