Methamphetamine contamination

⚠️ This entry contains figures or rules that change with government policy or RBNZ settings. Check the current position at the source link below before relying on it.

Methamphetamine contamination is residue left in a property from manufacture or heavy use, which can require testing and decontamination before the property is tenanted.

The regulatory position

Testing and decontamination must be carried out in accordance with NZS 8510:2017, as modified by the Residential Tenancies (Managing Methamphetamine Contamination) Regulations 2026\. Those provisions took effect on 1 December 2025\.

The regulations also address abandoned goods in a contaminated property — a landlord must take decontamination and testing costs into account when deciding whether goods left behind are worth storing or can be disposed of.

For investors

• Test before purchase where there is any indication of risk. It is inexpensive relative to the cost of decontamination.
• Insurance treatment varies and many policies now limit or exclude meth cover, or cap it. Check your policy wording specifically.
• Decontamination can be expensive and can require removal of linings, carpets and fittings
• A contamination history affects value and must be disclosed

Common misunderstanding

The standards and thresholds have been contentious and have changed. Earlier guidance produced widespread testing and remediation that was later reassessed. Work to the current standard and current regulations, not older material.

A positive screening test is not the same as a confirmed contamination requiring decontamination. Follow the standard's process.

Related terms

Sources

• NZS 8510:2017; Residential Tenancies (Managing Methamphetamine Contamination) Regulations 2026; Tenancy Services

Last reviewed: 1 August 2026 · Rules are new and guidance is still developing. General information only.

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