The Ministry of Business, Innovation and Employment (MBIE) has announced further changes from 8 October 2026. The updated exemption will allow certain certified structural products, including some prefabricated building systems.
Eligible projects may also use or modify existing water, wastewater and stormwater connections. Approval may still be required from the council or utility provider.
The market impact
The policy aims to make small homes easier to build on existing residential land.
In Auckland, this could gradually increase the supply of one- and two-bedroom homes, especially in established suburbs with larger sections. These properties may appeal to single tenants, couples, small families and older renters.
If more owners offer granny flats for rent, tenants could have greater choice. Existing small apartments and units may also face more competition in some local areas.
However, a rapid increase in rental supply is unlikely. Construction costs, finance, site conditions and infrastructure capacity will still affect whether projects proceed. Some new dwellings will also be used by family members rather than rented.
What owners should know
A building consent exemption does not remove all legal responsibilities.
All work must meet the New Zealand Building Code and the conditions of the exemption. Professional advice and council or utility approval may still be required.
If the completed dwelling is rented, it must also meet the Residential Tenancies Act, Healthy Homes Standards and other relevant requirements.
The policy creates a new opportunity for small-scale housing supply. Its actual effect on Auckland rents and vacancy levels will depend on how many dwellings are completed and offered to tenants.
Official sources
MBIE – Changes to the granny flat exemption from 8 October 2026
New Zealand Government – Granny flat consent exemption takes effect
This article contains general market commentary prepared by New Sunrises from publicly available government information. It does not constitute legal, building, financial or investment advice. Requirements vary by property and project. Owners should confirm the current rules with the relevant authority and obtain professional advice before starting any work.