RB Thomas Ltd

Home extensions & additions

Extensions & Additions

Home extensions and additions across the Waikato — extra bedrooms, bigger living areas and second storeys, tied seamlessly into your existing home.

Timber-clad home built by RB Thomas in the Waikato
Family relaxing together in their renovated home

Add on without the headache

Moving house is expensive and disruptive. Often the smarter move is to add to the home you already love — a new bedroom, a bigger living area, a second storey. We handle design, consents, structure and finish.

  • Design & consents

    Concept through to working drawings and the council consent — we handle the paperwork and code compliance so you don't have to.

  • Foundations & structure

    New foundations, framing and structural work done right, ready to carry the addition for the long haul.

  • Weathertight & matched

    Rooflines, cladding and joinery matched so the extension looks like it was always part of the house — not bolted on.

  • Tied into your home

    We connect the new space to the existing layout — flow, services and finishes all lined up so it feels seamless.

How an extension with us works

  • 1Free quote

    Tell us what you want to add. We'll assess the existing house, talk through the options, and come back with a clear fixed quote.

  • 2Design & consents

    We develop the plans, match them to the existing home, and handle the council consent and code compliance for you.

  • 3We build it

    Foundations, framing, weathertightness and fit-out — tied seamlessly into your home, with the site kept tidy each day.

  • 4Handover

    We finish up, walk you through it all, and back the work with the Halo 10-Year Guarantee. Then you've got the extra space you needed.

Get started

Thinking about adding on?

Tell us about your project and we’ll come back with a clear, honest quote — no obligation, no pressure.

Don’t just take our word for it

Jake and his team did a fantastic 120sqm extension on our home in the Waikato. Jake & Faye are easy to deal with and listened to our requests and delivered exactly what was quoted & promised, to an outstanding quality and workmanship.

Anton O'ConnellGoogle review

I have had the privilege of using Jake as a builder and project manager on numerous occasions. I can honestly say you will never find a more honest and genuine man. His workmanship is second to none and he communicates through every step of the build/renovation and makes sure you understand the process. I couldn't recommend him highly enough.
Craig
Highly recommend! These guys were awesome, professional, clean, communicative and had a high standard of work. Worked within our budget, made suggestions around savings and provided a fixed quote, which they stuck to. We renovated a 1980s bathroom, toilet and shower area. Will definitely use again for our kitchen reno. 10/10!
Ragan Clancy

Extension & addition FAQs

Get started

Ready to extend?

Tell us about your project and we’ll come back with a clear, honest quote — no obligation, no pressure.

HamiltonMatamataCambridgeTirauTe AwamutuPutāruruOtorohangaWaitomoTe Kuiti

Looking for a builder who always keeps you in the loop?

We’re approved New Zealand Certified Builders, so you’ll qualify to apply for Halo — our comprehensive 10-Year Residential Guarantee. Rest assured, you’re in good hands.

We most likely work in your area too, but if you’re unsure don’t hesitate to give us a call.