Meth Guide

Questions about methamphetamine residue in a rental property need evidence and the current regulatory process. Avoid treating a suspicion or an informal observation as proof about a property or its occupants.

Use the rules introduced in April 2026

The Residential Tenancies (Managing Methamphetamine Contamination) Regulations took effect on 16 April 2026. Tenancy Services explains that residue above 15 micrograms per 100 square centimetres makes an affected area contaminated, while levels above 30 micrograms per 100 square centimetres can make a property uninhabitable under the rules. The detailed circumstances matter, including provisions for remote and inconsequential areas.

Read the current official contamination guidance before deciding what action is required.

Testing needs to meet the standard

Check that screening, detailed testing and any decontamination follow NZS 8510:2017 as modified by the 2026 regulations. Detailed testing requires a qualified professional, with separation from the person undertaking decontamination. The official testing and decontamination guidance explains the requirements and verification after work.

Practical steps for landlords

• Keep the full report, including the method, locations tested and results.
• Discuss the report with an appropriately qualified professional and your property manager.
• Check lawful access, tenant communication, insurance notification and any tenancy implications before acting.
• Record work undertaken and the follow-up testing required.

Do not assume that a result proves who caused contamination. Liability and any decision about ending a tenancy need the applicable evidence and legal process.

Ask about your property

The enquiry form below goes to Nicole Banks. For an existing tenancy, contact your named property manager directly. Find rental-team details or return to the landlord guides.

By Nicole Banks. Updated 15 September 2026. This guide provides a route to the official requirements and property-specific advice.