Healthy Homes reports: the age question

What Healthy Homes Standards actually cover

The Healthy Homes Standards are minimum requirements for rental properties under the Residential Tenancies Act 1986. They apply primarily in the rental context — landlords must ensure compliance before or shortly after a new tenancy. The standards cover five areas:

• Heating — fixed heating with specified minimum capacity in the main living room.
• Insulation — ceiling and underfloor insulation to specified R-values.
• Ventilation — extract fans in kitchens and bathrooms; openable windows or doors in bedrooms and living rooms.
• Moisture ingress and drainage — efficient drainage; ground moisture barrier where appropriate.
• Draught stopping — no unreasonable gaps or holes.

When a property sells, the buyer may be purchasing to live in themselves or to rent out. In the rental case, Healthy Homes compliance matters directly. In the owner-occupier case, it matters indirectly — a Healthy Homes compliant property is reassurance about insulation, heating, ventilation, and moisture.

A Healthy Homes assessment report is not a statutory sale document. Providing it to purchasers is a vendor choice, not a legal requirement. Providing an accurate and recent assessment is usually helpful to both parties.

When an older report remains useful

Healthy Homes assessments document the state of specific fixtures: the heater unit, the insulation, the extract fans, the ground moisture barrier. If none of those fixtures has changed since the assessment, the report remains accurate. An assessment is not invalidated simply by the passage of time.

An older report typically remains reasonable to provide if:

• The property has not had significant alterations — no new heating unit installed, insulation not removed or added, no bathroom or kitchen renovation changing the extract-fan situation.
• The report was produced by a credentialled assessor following the current Healthy Homes Standards.
• The report's specific findings still correspond to the current state (walk through the house with the report in hand to verify).

Healthy Homes Standards have had staged commencements. A 2022 assessment was tested against the Standards as they stood in 2022; a 2026 assessment is tested against current Standards. If the Standards have tightened between the assessment date and today, the older assessment may not reflect current compliance even if the building state is unchanged.

The standard offer: old report plus statement of changes

When an older Healthy Homes assessment remains relevant, the clean approach is to offer it alongside a brief vendor statement confirming what has and has not changed. Template language:

Healthy Homes assessment: The attached Healthy Homes assessment was conducted on [date] by [assessor]. Since that date, the property has undergone the following relevant changes: [list any changes to heating, insulation, ventilation, moisture management, or draught stopping; if none, state "no relevant changes"]. The assessment reflects the state of the property as of [date]; purchasers are welcome to commission a fresh assessment if they wish.

This statement gives the purchaser complete information: the original report, any changes since, and the option to commission a current one. It is more informative than withholding the report on age grounds. The cost to you is minimal.

Defusing "the report is too old"

When the agent resists providing an older Healthy Homes report on the basis that it is "too old," the response is the statement above. The written template can be added to the listing materials at no cost. The purchaser can then decide whether the historical assessment plus the change statement is enough, or whether they want a fresh assessment.

If the agent continues to resist, the underlying reason is typically not that the report is unreliable but that the agent would prefer to present the property without the detail the report contains. Healthy Homes reports are detailed; they document specific figures and specific compliance points; they are harder to gloss over than general marketing language. An agent who wants to present the property in broad terms may prefer not to provide detailed documentation.

Under Rule 10.7, the licensee's duty is to disclose known defects. An existing Healthy Homes assessment is not itself a defect, but it is information the vendor holds. Withholding it when the purchaser would benefit from having it is not consistent with the best-interests-of-both-parties framing of Rule 9.2. The vendor's authority to release the document is the vendor's.

When a fresh assessment is worth commissioning

Commissioning a new assessment before listing is worthwhile if:

• The existing report is substantially out of date (say, five+ years old) and the Standards have moved since.
• Significant alterations have been made since the report — new heating, insulation, renovations.
• The existing report identified non-compliance items that have since been remediated. A fresh assessment documents the remediation.
• The property is being marketed specifically to investor purchasers, where Healthy Homes compliance is a direct purchase consideration.

A standard Healthy Homes assessment typically costs $150–$300 depending on region and assessor. The new assessment is a vendor expense, not a marketing budget item requiring agency involvement. Engaging the assessor directly (not via the agency) keeps the relationship simple and avoids any provider-fee markup question.

Where this guide sits in the section

Previous: The building inspection report: what NZS 4306 requires.

Related: Provider fee markups: the invoice question to ask.

Rules cited: Healthy Homes Standards (under RTA 1986), PCCC Rules 2012 (Rules 9.2, 10.7).