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NZ Healthy Homes Bill

The Government’s new standards to make homes warm and dry set minimum requirements for heating, insulation, ventilation, moisture and drainage, and draught stopping in all residential rental properties. 

For more information about the Healthy Homes Bill, click here.


The Residential Tenancy Act

As a landlord, it’s vital you’re well-versed in the changes to the Residential Tenancy Act that came into effect on 1 July 2016. Find out how these changes may affect you and your properties. 

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Minimum Standards For New Zealand Rental Properties

On the 18th April 2016, cabinet agreed on the changes to the Residential Tenancy Act that came into effect from the 1st July 2016 and requires insulation and smoke alarms to be retrofitted to an estimated 180,000 homes across New Zealand before 1st July 2019.

From 1 July 2016

  • All rental properties must have smoke alarms.
  • All new tenancy agreements must include an insulation statement outlining the extent and safety of insulation in the property for underfloor, ceiling and walls.

Before 1 July 2019

  • Should insulation meet the 1978 standard then no further insulation is required.
  • Should insulation not meet the 1978 standard, the insulation must be brought up to the current standard (2008 amendment).
  • Where accessible, under floors and ceilings shall be insulated under and above all habitable space.
  • Wall insulation is not required to be retrofitted, however needs to be assessed and stated on tenancy agreements.
  • A minimum of one working smoke alarm within three meters of each bedroom door. In a multilevel home a smoke alarm is required on each level.

The 1978 standard for insulation

1978 standard for insulation5  

Existing Ceiling Insulation Thickness

Existing Ceiling Insulation Thickness7 

From July 2019

  • All rental properties must have underfloor and ceiling insulation where it can practically be installed.

Failure to comply with regulations about smoke alarms or insulation will result in fines of up to $4000, which a landlord must pay to a tenant.  

For more information about the Residential Tenancies Act 1986, provided by Tenancy Services, click here.

Current Building Code Standard

2008 amendment

The current building code standard

current building code standard3                          Zones3

What is an R Value?

The R-value is a measure of the thermal resistance of an insulating product. The higher the R-value, the greater the resistance to the flow of heat through that product. Therefore, the higher the R-value, the warmer the home in winter.


Compliance & Warranty

On completion of the installation of insulation, EnergySmart provides a Certificate of Compliance and Warranty that acts as a Statement of Insulation for landlords. It contains:

  • The property address.
  • Details of the products installed by EnergySmart and the warranty details of such products.
  • Warranty of EnergySmart’s workmanship in meeting installing standard NZ 4246.
  • Compliance to the minimum standard legislative requirements.
  • Date of installation and assessment.

To find out more about how the recent changes to the Residential Tenancy Act affect you and if your tenants are eligible for a subsidy, book your free rental assessment today.


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Contact us to find out if your rental property complies with new legislation for insulation.