Providing housing for a rural workforce is often essential to run a successful farming operation, but it also puts a farm owner into the role of a residential landlord for legal purposes.
Whether the occupier is a contract milker, sharemilker or general farm employee, the same baseline responsibilities apply as they would in any residential tenancy. In recent years, however, methamphetamine contamination has become an increasingly practical and legal risk area for all landlords to manage.
Landlord obligations
The core legal point is straightforward: if you provide residential premises, you must meet the statutory duties imposed on landlords. Under the Residential Tenancies Act 1986, a landlord must provide the premises in a reasonable state of cleanliness and repair, and must comply with buildings, and health and safety requirements that apply to the premises.
Landlords must follow contaminant regulations. If the landlord knows the property is contaminated and it hasn’t been properly cleaned, it cannot be let to a new tenant. As well, an existing tenant may only remain there in limited, regulated circumstances during clean-up.
Meth testing is now a live issue (especially on farms)
Farm accommodation is uniquely exposed to harm because it often involves high turnover, seasonal employment, limited day-to-day oversight and shared use by staff, contractors and visitors. These factors can make contamination — whether historical, accidental or intentional — harder to trace and harder to prove.
Adding to the risk, recent rural workplace testing data reported by The Drug Detection Agency in the farming media indicates drug use detected in provincial and rural workplaces has risen sharply in some regions. While workplace testing data is not the same as housing contamination data, it is a useful indicator that substance use remains a live workforce issue in parts of the rural economy, and it helps explain why farmers are increasingly thinking about worker accommodation risk management.[1]
Getting it right from the start
Even where meth contamination is detected, disputes often turn on evidence. When contamination concerns arise, the landlord needs evidence that contamination arose during the relevant person’s occupancy and, without a baseline test, landlords can face significant difficulty recovering costs or showing they acted reasonably.
This evidential theme is also reflected in the courts. In a 2021 case,[2] the judge observed that the ‘significant problem’ for the landlord’s claim was the absence of methamphetamine testing at the start of the tenancy. If initial testing had shown no meth residue, the residue detected at the end could only have occurred during the tenancy.
The courts have also addressed whether testing can occur during an inspection. The High Court has indicated that non-invasive methamphetamine testing may fall within a general inspection power in a tenancy agreement. The court also noted landlords’ obligations to provide and maintain a habitable property and to comply with relevant legislative requirements, in a context where testing was used to assess habitability.
When testing and decontamination are mandatory
Since April 2026, regulations made under the Residential Tenancies Act provide a process for identifying and managing methamphetamine contamination in residential tenancy premises.
The regulations require a landlord to arrange testing in accordance with the prescribed method where Police or a local authority notify the landlord that manufacture has, or is likely to have, taken place, or where a valid screening assessment indicates contamination and the landlord is notified. Where decontamination work is required, the person engaged to carry out decontamination must be independent of those who performed the testing.
Future practical considerations for farmers
A structured, documented testing regime is a practical way to manage legal risk and reduce disputes. Recommended best practice includes:
- A pre-tenancy baseline meth test by a qualified tester
- Post-tenancy (or between-tenancy) testing, and
- Careful record-keeping of certificates, reports, photographs and accommodation agreements.
Finally, consider including clear testing clauses in accommodation agreements (including where housing is part of an employment or sharemilking arrangement) to set expectations and reduce misunderstandings.
Meth testing is not about assuming the worst of workers; it is about ensuring accommodation is safe, healthy and legally defensible. This is particularly important in a sector where workforce mobility, remote locations and emerging substance use trends can combine to create real operational health and safety exposure for farmers.
[1] Report on TDDA data in Q1 2026.
[2] Eren Ltd v Martin [2021] NZDC 15210.
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