Granny flats built on your section

(The rules, 2026)

No consent needed, if your granny flat meets the conditions.

Since 15 January 2026, a granny flat of up to 70 m² can be built without a building consent or a resource consent, if it meets the conditions: new, detached, single storey, and built or supervised by licensed building practitioners. The full list is in our guide.

Your council is the authority on your site. Check with them before you build.

Sources: building.govt.nz · environment.govt.nz · Reviewed October 2026.

Check if your section qualifies Read the full rules →

Why build it with CJG.

Plainly.

Space for family shouldn’t take a year of paperwork.

Since January 2026, a granny flat of up to 70 m² can skip the building and resource consents if it meets the conditions. If yours doesn’t, we prepare and lodge the consent for you and answer every council request.

Source: building.govt.nz ↗

Insulation with nothing in the way.

BRANZ, New Zealand’s building research body, measured 47 new homes and found that, on average, more than a third of the outside wall area was timber framing, not insulation. Our wall panels have no studs inside them.

Source: BRANZ ER53 ↗

Nothing in the walls to rot.

Nobody wants to find rot behind the lining. Rot and borer live on timber. Our walls have no timber at all: a steel frame, steel on both faces, and a core that barely takes up water.

The longer a build takes, the longer you pay twice.

The average new New Zealand home took 455 days from consent to final inspection (Stats NZ, homes consented in the December 2020 quarter). A 70 m² CJG granny flat is delivered within five months of signing.

Source: Stats NZ ↗

Rising build prices are the top worry.

In Master Builders’ 2023 survey of more than 1,000 building professionals and homeowners, 46% named price escalation as their biggest concern. Our construction price is fixed when you sign, for a level site. Foundation work beyond that, site works, council fees and any changes you ask for are quoted separately.

Source: Master Builders ↗

One team, from drawings to keys.

Design, consent, manufacture, transport, assembly and project management, in one contract.

(Kitset, prefab or CJG)

How it differs from a kitset or a prefab.

The frame and panels are made in a factory to the design, then assembled on your site. It isn’t a kit you put together yourself, and it isn’t a finished unit delivered on a truck. It’s designed for your section and built there.