House Extensions —
More space. Better flow.
Built to suit your lifestyle.
If you love your home but you’ve outgrown it, a smart extension could be the perfect solution. We help homeowners across Waikato and Waipā get more out of their existing homes — without the cost and stress of moving.
House extensions Waikato
At Roger Ramsey Building, we manage the full house extension process from start to finish. From early design and council consents to the final handover, our experienced team makes sure your new space blends seamlessly with the old — in both function and finish.
Types of Home Extensions We Build:
Bedroom and ensuite additionsCreate private, comfortable spaces with added functionality for growing families or guests.
Kitchen and Dining extensionsImprove flow and bring everyone together with a brighter, more spacious living hub.
Backed by Experience
Why Choose Us for Your House Extension?
✔ Experienced Waikato builders
who know how to work with existing structures
✔ Detailed quotes
for clarity and peace of mind
✔ Full project management
including subcontractors and consents
✔ Licensed Building Practitioners
with 35+ years of experience
✔ High-quality craftsmanship
backed by our 24-month workmanship guarantee
Ready to Expand Your Home?
Start with a free, no-obligation consultation. We’ll visit your site, chat through your options, and help you understand what’s possible.
House Extension FAQs
Got questions about extending your home?
We’ve got answers.
A house extension is a great way to add space and value — but it also comes with a few big decisions. Whether you're planning a second storey, adding a bedroom, or converting your garage, it's natural to have questions. We've put together some of the most common ones we get from Waikato homeowners to help you feel clear and confident before you begin.
Do I need council consent for a house extension?
Yes — in most cases, council consent is required, especially if you're adding to the footprint of your home, altering structural elements, or including plumbing. The good news is, we can guide you through the entire process and take care of the consent paperwork for you.
Can you match the new extension to the existing house?
Absolutely. We take care to ensure your extension looks and feels like it was always part of your home — from materials and cladding to rooflines and finishes.
How much does a house extension cost?
Costs vary depending on the size, complexity, and features of the extension. After a site visit and consultation, we’ll provide a clear quote so you know exactly what to expect before we start.
How long does a house extension take?
Timeframes depend on the scale of the work, but most standard extensions take between 8–16 weeks once construction begins. We’ll give you a clear timeline up front and keep you updated along the way.
Can I live in my home during the extension?
Often, yes. We plan carefully to minimise disruption, and in many cases, clients can stay in the home during the build. For larger or more invasive extensions, we’ll let you know if temporary relocation might be needed.
Do you help with the design?
Yes — we offer in-house design support and work closely with trusted draftspeople. Whether you have full plans or are just getting started, we’ll help bring your ideas to life in a practical, buildable way.
Can you manage the whole project for us?
Definitely. We offer full project management — including organising all subcontractors, timelines, consents, and inspections — so you don’t have to juggle multiple trades.
Reputation Backed by Results
Hear directly from our clients — watch the stories behind the builds and see why so many Kiwis trust us with their homes.
Proudly building across the Waikato:
Te Awamutu, Cambridge, Hamilton, Otorohanga, Waitomo, Te Kuiti, Kawhia, Karapiro
Contact us
Find us
319 Rickit Road,
Te Awamutu 3800
