The five mandatory standards
1. Heating
Landlords must provide one or more fixed heating devices (such as a heat pump, wood burner, or flued gas heater) that can heat the main living room to at least 18°C. The required heating capacity is calculated based on the size and construction of the room. Portable heaters are not compliant.2. Insulation
Ceiling and underfloor insulation must meet specific R-value requirements. The R-value is a measure of thermal resistance—the higher the R-value, the better the insulation.- Zones 1 & 2 (North Island, excluding Central Plateau): Ceiling R 2.9
- Zone 3 (entire South Island plus the Central Plateau — Ruapehu, Taupō): Ceiling R 3.3
- Underfloor (all zones): R 1.3
There is a “120mm exception.” If your home has existing ceiling insulation that was installed before 1 July 2016 and it is still in good condition and at least 120mm thick, the landlord may not need to top it up immediately. However, any new insulation must meet the higher R-values.
3. Ventilation
Every habitable room (bedrooms, living rooms, kitchens) must have at least one window, door, or skylight that opens to the outside.- Kitchens: Must have an extractor fan vented to the outside.
- Bathrooms: Must have an extractor fan vented to the outside.
4. Moisture ingress and drainage
Homes must have efficient drainage for the removal of storm, surface, and ground water. If the home has an enclosed sub-floor space, the landlord must install a ground moisture barrier (usually heavy-duty polythene sheeting) to prevent dampness from rising into the home.5. Draught stopping
Landlords must block any unnecessary gaps or holes in walls, ceilings, windows, floors, and doors that cause noticeable draughts. This includes sealing unused fireplaces or blocking chimneys.How to request remediation
If you believe your home does not meet these standards, you should follow a formal process to ensure your rights are protected. The notice must be in writing, clearly state the breach of the Residential Tenancies Act, and provide a deadline. If the landlord fails to act within this window, you can apply to the Tenancy Tribunal for a mediation or a hearing. For more information on the legal process, see Making a complaint. Sources:- Tenancy Services: Heating Standard — retrieved 2026-05-11
- Tenancy Services: Insulation Standard — retrieved 2026-05-11
- Tenancy Services: Ventilation Standard — retrieved 2026-05-11
- Tenancy Services: Moisture and Drainage Standard — retrieved 2026-05-11