Methamphetamine Standards Update Brings Clarity For Landlords and Property Managers

LJ Hooker has welcomed changes to methamphetamine regulations, describing them as a positive step forward in providing much-needed clarity and consistency for the rental sector.

New rules under the Residential Tenancies Act 1986 will come into effect today (16 April 2026), introducing clear thresholds and processes for managing methamphetamine contamination in rental properties. LJ Hooker Head of Operations NZ Allaine Burkett said the changes will help remove long-standing uncertainty for landlords and property managers.

“This is a welcome and practical update for our industry,” Burkett said. “For many years, methamphetamine contamination has been an area where guidance has not always been clear or consistent. These new regulations provide defined thresholds and processes, which will support more confident and informed decision-making.”

The updated standards introduce a clear decontamination threshold of 15 micrograms per 100 square centimetres (15μg/100cm²), with properties required to be cleaned to at or below that level before they can be re-tenanted.

Having a clearly defined benchmark is a significant improvement, Burkett said.

“The introduction of a set decontamination level gives landlords certainty around when action is required, and just as importantly, when it is not. This helps avoid unnecessary remediation while still ensuring properties are safe for tenants.”

The regulations also establish a higher contamination threshold of 30μg/100cm², where specific tenancy termination rights may apply, recognising the more serious impact of elevated contamination levels.

In addition, clearer guidance has been introduced around testing procedures, decontamination processes and the handling of abandoned goods in affected properties.

These changes will lead to more consistent practices across the industry, Burkett

said.