Eight hundred kilometres east of the mainland, the Chathams run on fishing, farming and self-reliance, and housing there is the hardest logistics problem in New Zealand residential building. It is also solvable: a 70 m² home is compact enough to ship as a planned freight exercise, and the island's need for warm, compliant dwellings for whānau and workers is as real as anywhere. Honesty first: a Chathams build is a special project: barge freight, wind zones at the country's upper end, and a build window planned around sailings. The exemption applies as it does nationwide; the council's combined planning document and the island's logistics set the terms.
Since January 2026, a stand-alone home of up to 70 m² no longer needs building consent anywhere in New Zealand, provided licensed professionals design and build it. The Building Code still applies in full, the council is notified through the exemption paperwork rather than a consent application, and your district plan keeps setting the ground rules for where and how it sits on the section.
The Chatham Islands Council operates under its own combined resource management document, one small organisation handling the lot. Zone questions are simple by mainland standards; the real planning is physical: coastal exposure on every site, wind zones at the national extreme, and services that are island-managed. Freight, accommodation for the crew and the shipping calendar shape the project plan as much as any rule.
Everything ships: materials consolidate to the barge schedule, the crew's time on island is planned tightly, and the build window follows sailings rather than weeks-on-site norms. Wind engineering runs at the country's upper end and salt exposure is universal: the spec assumes both from the first sheet.
As a special project, scoped honestly: the design and exemption work identically to the mainland, but freight, crew logistics and the shipping calendar drive cost and timeline, and we'd price it as the bespoke exercise it is. The feasibility conversation comes first and tells you straight whether it stacks up.
Yes, it's national law and the Chathams are New Zealand: a home up to 70 m² designed and built by licensed professionals needs no building consent, with the council notified through the exemption paperwork. The island's planning document and physical realities set the remaining terms.
Engineering at the country's upper end, assumed from the outset: bracing, fixings and glazing specified for extreme exposure, salt-grade materials universal, and the structure signed for the site's actual conditions. It's the mainland's coastal spec turned up: known physics, honest engineering.
Whānau on family land, fishing and farming workers, and the public-service staff the island hosts in rotation: all renting or housed against a tiny, ageing stock. A warm compliant dwelling is worth more per square metre to island life than almost anywhere on the mainland.
The free site check reads Chatham Islands Council's layers for your exact section: zones, overlays, services, wind.