A building consent is not required for the installation of a ground moisture barrier in an existing building.
What the law says
Subject to section 42A of the Building Act, Schedule 1 exempts the following from a building consent:
Building work in connection with the installation in an existing building’s subfloor space of a ground moisture barrier.
Guidance on the exemption
This exemption reflects that the installation of ground moisture barriers is building work with a low risk of causing danger to people or damage to other buildings.
Is your rental compliant?
The Residential Tenancies (Healthy Homes Standards) Regulations 2019, which came into force on 1 July 2019, set minimum requirements for rental properties in relation to heating, insulation, ventilation, moisture ingress and drainage, and draught-stopping.
This includes a requirement that all residential rental premises with enclosed subfloor spaces must have ground moisture barriers installed in those spaces where reasonably practicable.
The regulations provide a transitional period to give landlords time to comply with the new standards:
• 1 July 2021 – From this date, private landlords must ensure that their rental properties comply within 90 days of any new tenancy
• 1 July 2021 – All boarding houses must comply
• 1 July 2023 – All Housing New Zealand and registered Community Housing Provider houses must comply
• 1 July 2024 – All rental homes must comply
Examples where this exemption could apply
|The subfloor space within an existing house is being retrofitted with a ground moisture barrier.|
Examples where building consent is required
|A ground moisture barrier is to be installed within the subfloor space of a new house under construction.|