What we do

Three words. The whole build.

Wetherill Group covers the professional side of construction: the design, engineering and compliance that surround a build. Everything we do fits under one promise: Design, Flow, Certify. It's the simplest way to understand a project, and it's how our businesses work together.

DESIGN

Design it

RD Architecture

We design your home or building from the first idea through to the drawings your builder and the council need. Good design up front is what makes the rest of the project run smoothly.

Concept & sketch designDeveloped designConsent drawingsLight-commercial
FLOW

Flow it

HydrOSET · Nexxis

We engineer the water so your site actually works: stormwater and on-site wastewater engineering, plus AI tools that speed up the process and cut out busywork.

Stormwater designWastewater / OSETAI & automation
CERTIFY

Certify it

C3 Building Compliance

We handle the council side: consent processing and compliance, so your build gets approved and signed off without the usual back-and-forth.

Building consent processingCompliance consultingDelegated council authorityNationwide

One project, one accountable team.

Because design, engineering and compliance sit in the same group, your project moves between them cleanly, with no gaps and no finger-pointing.

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Get in touch

Not sure who you need? Start with us.

Tell us about your project and we'll point you to the right business, or manage the whole thing across the group.

Tauranga, Bay of Plenty
New Zealand
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