Disclaimer:
This article provides general information only and does not constitute financial, legal, tax, or investment advice. Property investment involves risk. Always do your own research and seek personalised advice from qualified professionals before making investment decisions.
Key Takeaways
- Healthy Homes Standards cover heating, insulation, ventilation, moisture, and draughts.
- The main living room needs one or more qualifying fixed heaters that meet its calculated minimum heating capacity.
- Ceiling and underfloor insulation must meet minimum R-values by zone.
- Kitchens and bathrooms need qualifying extractor fans, and properties need efficient drainage; enclosed subfloors generally need a ground moisture barrier unless an exemption applies.
- All rental properties must comply as of 1 July 2025, subject to any applicable exemption, and compliance is an ongoing responsibility.
The Healthy Homes Standards set minimum requirements for heating, insulation, ventilation, moisture, drainage, and draught stopping in rental properties. As a landlord, you are legally required to comply with these standards. Understanding what is required helps you budget for improvements and avoid penalties.
This guide covers the key requirements of the Healthy Homes Standards, compliance timeframes, and practical tips for meeting your obligations cost-effectively.
Overview of Healthy Homes Standards
The Healthy Homes Standards were introduced to improve the quality of rental housing in New Zealand. Research showed that many rental properties were cold, damp, and unhealthy, contributing to poor health outcomes for tenants.
The standards cover five key areas: heating, insulation, ventilation, moisture ingress and drainage, and draught stopping.
Heating Standard
The heating standard requires one or more fixed heaters that directly heat the main living room, are acceptable types, and meet the calculated minimum heating capacity for that room.
Key Requirements
Heating must be fixed rather than portable, have at least 1.5 kW heating capacity, and meet the calculated minimum capacity for the main living room. Acceptable options commonly include heat pumps, woodburners, pellet burners and flued gas heaters. Open fires and unflued combustion heaters are not acceptable; other electric-heater restrictions also apply.
Heating Capacity Calculation:
The required heating capacity depends on the size of the living room, location (climate zone), and insulation levels. Tenancy Services provides a heating assessment tool to calculate the minimum heating capacity required for your property.
Insulation Standard
The insulation standard requires ceiling and underfloor insulation to meet minimum R-values (thermal resistance ratings).
Minimum R-Values:
Ceiling Insulation:
- Zone 1 (Northland, Auckland): R 2.9
- Zone 2 (Most of North Island): R 2.9
- Zone 3 (South Island, Central Plateau): R 3.3
- All zones: R 1.3
Existing insulation that meets older standards may be acceptable if it is in reasonable condition. Check the specific requirements for your situation.
Ventilation Standard
The ventilation standard requires each livable space to have a qualifying window or door that opens outdoors and can be fixed open. Kitchens and bathrooms need qualifying extractor fans that vent outdoors; a recirculating range hood does not satisfy that extractor-fan requirement.
Extractor Fan Requirements
Extractor-fan requirements depend on when the fan was installed and the applicable standard. Use the current Tenancy Services ventilation guidance to confirm the required diameter or exhaust capacity, outdoor ducting and working condition for the property.
Moisture and Drainage Standard
This standard focuses on preventing moisture problems from the ground and ensuring proper drainage. If there is an enclosed subfloor space, a ground moisture barrier may be required. Efficient drainage for surface water must be provided, and gutters, downpipes, and drains must be in reasonable condition. Moisture ingress from the ground is a significant issue in many older New Zealand homes, and a ground moisture barrier using polythene sheeting can significantly reduce dampness.
Draught Stopping Standard
The draught stopping standard requires landlords to block unreasonable gaps and holes that cause draughts. All external doors and windows must be able to close properly, and unused chimneys and fireplaces must be blocked. Gaps and holes in walls, ceilings, windows, floors, and doors must be blocked where reasonably practicable.
Compliance Requirements
All rental properties must comply with the Healthy Homes Standards as of 1 July 2025. Some properties or parts of a standard may qualify for a specific exemption, and landlords must keep the property compliant on an ongoing basis.
Current obligation: all rental properties must comply unless an exemption applies. Check the property against the official guidance, document its current position, and arrange any required assessment or work. Consequences depend on the particular breach and enforcement process.
Costs of Compliance
Compliance costs are property-specific. Relevant factors include the existing condition, access, required capacity, exemptions, product choices and contractor quotes. The figures below have been removed because they were not supported as universal market ranges:
- Obtain a property-specific heating assessment and written installation quote
- Confirm insulation condition and required R-value, then obtain a written quote
- Check access, existing insulation and any exemption before obtaining a written quote
- Confirm the applicable extractor-fan specification and obtain a written quote
- Check whether there is an enclosed subfloor and whether an exemption applies, then obtain a written quote
- Identify unreasonable gaps and obtain a scope-specific quote where professional work is needed
Tax treatment is not automatic: Inland Revenue distinguishes deductible rental expenses from capital expenditure. Keep records and confirm the treatment of each item with current Inland Revenue guidance or a tax adviser.
Learn More: Property Investment Tax Deductions You Should Know About
Penalties for Non-Compliance
Landlords who do not meet Healthy Homes obligations are in breach of the Residential Tenancies Act and may face consequences including financial penalties of up to $7,200. Failure to include the required compliance statement can carry a financial penalty of up to $500 for each tenancy. Any Tribunal order, compensation, penalty or other enforcement action depends on the specific breach and evidence.
Documentation Requirements
New or renewed tenancy agreements must include a signed statement detailing the property’s current level of compliance with the Healthy Homes Standards. Landlords must keep records and documents showing how they comply, make them available on request, and provide requested compliance information to tenants within 21 days.
Working with Property Managers
If you use a property manager, ensure they understand the Healthy Homes Standards requirements and can assess your property's compliance status. They should include compliance statements in tenancy agreements and be able to coordinate any required work on your behalf.
Learn More: Working with Property Managers: A Guide for Investors