Healthy Homes Standards NZ: Auckland Landlord Checklist

Quick answer: New Zealand’s Healthy Homes Standards require all private rental properties to meet minimum requirements across five areas — heating, insulation, ventilation, moisture ingress and drainage, and draught stopping. Compliance deadlines for most private tenancies have already passed. Non-compliant landlords risk Tenancy Tribunal penalties of up to $7,200 per breach.

The Healthy Homes Standards aren’t a grey area. The deadlines have passed for the overwhelming majority of Auckland rental properties, the compliance requirements are specific and measurable, and Tenancy Services has been actively enforcing them.

If you’re a landlord and you haven’t had the five standards checked off against the actual thresholds, you’re exposed. Not theoretically — actually. A tenant can raise a compliance complaint, Tenancy Services can conduct an inspection, and the Tribunal can issue remediation orders and exemplary damages.

This article gives you a practical checklist covering all five Healthy Homes Standards, the exact thresholds that apply in Auckland, and what to do if your property doesn’t currently meet them.

Healthy Homes compliance note: Under the Residential Tenancies Act 1986 (as amended), landlords must include a signed statement of Healthy Homes compliance in any new or renewed tenancy agreement. For private landlords, all rental properties were required to comply with all five standards by 1 July 2025. See tenancy.govt.nz for current requirements and deadlines.

The Five Healthy Homes Standards — Auckland Landlord Checklist

Work through each standard below. Each section identifies what’s required, the specific thresholds, and common compliance failures we see in Auckland rental properties.

Standard 1: Heating

What’s Required

The rental property must have one or more fixed heaters that can directly heat the main living room, with at least 1.5 kW of heating capacity and enough output to meet the calculated requirement for that room. The calculation takes in the room’s floor area, ceiling height, the number of external walls and windows, and the climate zone. Tenancy Services publishes the formula as an online tool, and the figure it returns is the only number that counts.

Auckland sits in Climate Zone 1. Don’t estimate the capacity off room size alone: two rooms of identical floor area can return different requirements once glazing and external wall count are in. Run the room through the Tenancy Services heating assessment tool, print the result, and keep it with your compliance records. Our guide to the heating standard walks through the tool and the common sizing traps in more detail.

What Qualifies

The most common compliant solution for Auckland landlords is a heat pump: cheap to run, quick to install, and not caught by the 2.4 kW electric-heater limit, provided the capacity matches the room and the unit has a thermostat. Heat pump installation for a typical Auckland living room runs $1,800 to $3,500 supply and install, and our heat pump installation cost guide breaks that down by unit size and install difficulty.

Two traps worth naming. A landlord who inherits a 1990s fixed electric panel heater in a large Grey Lynn living room is almost certainly non-compliant, because the calculated requirement for that room will exceed 2.4 kW. And a wood burner still has to meet the capacity figure, on top of Auckland Council’s air-quality rules for solid-fuel appliances.

Healthy Homes compliance note: The heating standard applies to the main living room only — not every room in the property. However, if the living room does not have a compliant fixed heater, providing portable heaters does not satisfy the requirement. See the Healthy Homes heating standard for full details.

Standard 2: Insulation

What’s Required

Ceiling and underfloor insulation must be present, in reasonable condition, and meet minimum R-value requirements based on when it was installed and the climate zone.

For Auckland (Climate Zone 1):

• Ceiling insulation installed on or after 1 July 2016: must meet R 2.9 in Auckland
• Ceiling insulation installed before 1 July 2016: the test is thickness, not R-value. It must be at least 120mm thick and in reasonable condition. Thinner than 120mm is only acceptable if you can show it met the required R-value when it was installed and has not degraded by more than 30% since
• Underfloor insulation: R 1.3, where installation is reasonably practicable

That 120mm figure is the one most landlords get wrong. R 1.3 is the underfloor minimum, not a ceiling allowance, and quoting it for a ceiling is a common and expensive mistake. If your ceiling insulation went in before July 2016, measure it. Reasonable condition means no mould, no dampness, no damage and no gaps.

Wall insulation is not required under the Healthy Homes Standards, though building consent conditions can require it on a new build or a significant alteration.

Common Failure Points

The most common insulation failures we see in Auckland rental properties are degraded or displaced underfloor insulation and missing ceiling insulation in roof spaces that were inaccessible or overlooked.

Underfloor insulation in older Auckland homes, particularly timber-framed places in Mangere, Papatoetoe and Henderson, is frequently missing entirely, or was fitted years ago and has since sagged away from the joists. A visual inspection from the underfloor access point will confirm this. If the insulation is foil-based (common in older NZ homes), note that foil insulation does not meet the R-value requirements for the Healthy Homes Standards and will need to be replaced or supplemented.

💡 Property tip: Insulation installation costs for Auckland rental properties typically run $1,500–$3,500 for ceiling and underfloor together, depending on property size and access. You can get an instant estimate for your property before you commit, and our insulation cost guide sets out ceiling and underfloor pricing per square metre. EECA’s Warmer Kiwi Homes programme provides subsidies for eligible properties — check eeca.govt.nz for current eligibility criteria.

Standard 3: Ventilation

What’s Required

The ventilation standard has two components: openable windows in habitable rooms, and extractor fans in kitchens and bathrooms.

Openable windows: Each habitable room must have openable windows, skylights, or doors to the outside. The openable area must be at least 5% of the floor area of the room. This requirement is met by most existing Auckland homes and rarely requires remedial work.

Extractor fans: This is where most Auckland rental properties fall short.

• Kitchen: a rangehood or extractor fan above the cooking area, venting to outside. Fans installed after 1 July 2019 must have a minimum diameter of 150mm including ducting, or an exhaust capacity of at least 50 litres per second.
• Bathrooms and separate toilets: an extractor fan venting to outside. Fans installed after 1 July 2019 must have a minimum diameter of 120mm including ducting, or an exhaust capacity of at least 25 litres per second.
• Fans installed before 1 July 2019: they can stay, provided they work and vent outside. When one fails, the replacement has to meet the current specification.

A recirculating rangehood, one that filters and returns air into the kitchen rather than venting it outside, does not comply. This is one of the most commonly misunderstood requirements. Many Auckland rentals have recirculating rangehoods installed, and landlords assume they are compliant. They are not.

Why a DVS, HRV or SmartVent System Doesn’t Satisfy the Ventilation Standard

This one costs landlords real money, because a positive-pressure ventilation system is not a cheap purchase. DVS, HRV and SmartVent-style systems draw air from the roof space and push it into the house. They do not extract moisture out of the kitchen or bathroom, so they do not meet the ventilation standard. Recirculating systems are explicitly excluded.

That doesn’t make them useless. A positive-pressure system can help with whole-house condensation, and plenty of Auckland landlords run one alongside compliant extractor fans. It simply cannot replace the fans. We compare the three brands, what they cost and what they actually fix in our DVS vs HRV vs SmartVent comparison for Auckland rentals.

The Continuous Mechanical Ventilation Alternative

There is a second route for properties with a continuous mechanical ventilation system installed during a renovation. Instead of the fan diameter and flow figures above, the system must extract directly outdoors at a minimum of 12 litres per second in the kitchen and 10 litres per second in the bathroom, running continuously. Most Auckland rentals will not have this. If yours does, get the installer’s specification sheet into your compliance file, because a Tribunal will want the numbers rather than your description of the unit.

Poor extraction is also the single most common cause of the winter mould complaints we get called out to. If a tenant has raised mould, read our landlord guide to condensation and mould in an Auckland rental before you paint over anything, because the liability split depends on whether the cause is structural or behavioural.

Healthy Homes compliance note: Extractor fans that vent into the ceiling space rather than through the roof or an exterior wall are non-compliant. This is a common installation shortcut in older Auckland properties. The fan must extract moisture and pollutants to outside the building envelope. See the ventilation standard on tenancy.govt.nz for the full ventilation standard.

Standard 4: Moisture Ingress and Drainage

What’s Required

The moisture ingress and drainage standard requires landlords to:

• Ensure the property has efficient drainage to remove surface water, stormwater, and groundwater — including gutters, downpipes, and stormwater drainage in good working order
• Install a ground moisture barrier under any suspended timber floor where the ground beneath the floor is exposed (i.e., not concrete) and where the crawl space is enclosed
• Ensure the property does not have any unreasonable moisture ingress — including fixing roof leaks, stopping rising damp, and addressing any plumbing leaks that contribute to moisture

Ground Moisture Barriers

The ground moisture barrier requirement catches out a significant number of Auckland landlords, particularly on older timber-framed homes. Where the subfloor is enclosed, a barrier must be installed if it is possible to do so. The regulations set the specification two ways: the barrier is either a polythene sheet complying with section 8 of NZS 4246:2016, or a product with a vapour flow resistance of at least 50 MNs/g fitted by a professional installer. Coverage, join overlap and how far the sheet runs up the piles are set out in that standard rather than on the Tenancy Services page, so have the installer confirm in writing which specification they worked to and keep it on file.

Installing a barrier in a typical Auckland home runs $600 to $1,500 depending on crawl-space access. The pattern we see most often on Papatoetoe and Henderson timber-framed rentals is a subfloor that has never had a barrier at all: bare damp earth, a floor reading high on a moisture meter, and a tenant running heaters flat out to keep the place warm. The barrier itself is usually half a day’s work. Left alone, the same moisture ends up in the joists, and that is a far larger bill.

A flood or a long-running leak resets this entirely. Once water has been under the floor, the barrier and the subfloor both need reassessment before you sign a compliance statement, which we cover in our post-flood repair guide.

💡 Property tip: If your Auckland rental has a suspended timber floor and you haven’t looked underneath it recently, get someone to inspect the crawl space. Missing or degraded ground moisture barriers, inadequate sub-floor ventilation, and early-stage joist deterioration are common and fixable — but only if they’re identified.

Standard 5: Draught Stopping

What’s Required

All unreasonable gaps and holes in walls, ceilings, floors, and around windows and doors that allow draughts must be stopped. Specifically:

• Unused fireplaces and chimneys must be blocked or fitted with a draught stopper
• Gaps around pipes, wiring, and ducting that pass through walls or floors must be sealed
• Windows and doors must close and latch properly
• Sub-floor vents must be present and in working order (not blocked — sub-floor ventilation is required; it’s draught entry into the living space that must be stopped)

What to Check

Draught stopping is typically the lowest-cost compliance item — most of the work involves sealing, caulking, and blocking gaps. The one item that surprises landlords is unused fireplaces: an unused fireplace chimney is one of the single largest sources of heat loss and draughts in a typical older Auckland home. Installing a removable chimney draught stopper or having the fireplace permanently sealed costs between $150 and $600 depending on the approach.

Two details worth knowing. A tenant can ask you in writing to make an unused fireplace available for use, and you are allowed to agree. And the age and condition of the house is not a defence for leaving gaps and holes unstopped — a 1920s bungalow is held to the same standard as a 2015 townhouse.

Healthy Homes compliance note: The draught stopping standard does not require sub-floor vents to be blocked — these are intentional ventilation openings. What must be stopped are unintentional gaps and holes between the exterior and the living space. Blocking sub-floor ventilation to satisfy draught stopping would itself create a compliance issue under the moisture ingress standard.

Room-by-Room Healthy Homes Inspection Checklist

The five standards are written by topic. A property inspection happens by room. That mismatch is why landlords miss things: you can read the heating standard, walk the house, and still forget that the separate toilet needs its own fan.

Work the property in this order, with a tape measure, a torch and your phone camera. Photograph everything you check, dated, and file it with the tenancy. If a complaint ever lands, the photos are what turn “I believe it complies” into evidence.

💡 Property tip: Do the roof space and the subfloor first, not last. They are the two areas that most often need a trade booked in, and they are the two you cannot assess from inside the house. Everything else can be checked on the same walk-through as a routine inspection.

The Five Standards at a Glance, With Remediation Costs

If all five items need remedial work, a typical Auckland rental can usually be brought to full Healthy Homes compliance for $4,000 to $8,000. Set that against the downside. Failing a Healthy Homes standard is an unlawful act under the Residential Tenancies Act 1986. The Tenancy Tribunal can order the work done, award exemplary damages of up to $7,200, and order a rent reduction or compensation to the tenant on top. You also carry the cost of the work either way, so the compliance spend is not the loss; the penalty is.

Budgeting for this properly across a portfolio is its own exercise, and we set out the annual numbers in our rental maintenance budget guide for Auckland landlords.

What a Healthy Homes Assessment Involves, and What It Costs

A Healthy Homes assessment is a physical inspection of one property against the five standards, producing a written report you can rely on and, where the property falls short, a scope of the work needed to close the gaps. It is not a legal certificate. There is no government-issued Healthy Homes certificate in New Zealand, and any provider implying otherwise is overselling. What you get is evidence: measurements, photographs, the heating tool output, and a list of what needs doing.

There is also no legal requirement to have an independent assessment done. A landlord can self-assess. The reason most Auckland landlords don’t is that the two areas that fail most often, ceiling insulation thickness and extractor fan ducting, both need someone in the roof space with a tape measure, and both are areas where being wrong is expensive.

What the assessment should cover

• Heating capacity for the main living room, run through the Tenancy Services tool, with the output recorded
• Ceiling insulation measured for thickness and inspected for gaps, dampness and displacement
• Underfloor insulation checked for coverage and whether it is still attached to the joists
• Every extractor fan traced to where it discharges, not just switched on
• Subfloor inspected for a ground moisture barrier and for standing moisture
• Gutters, downpipes and site drainage checked for function, not just presence
• Draughts, unused fireplaces, and unsealed penetrations recorded
• A written report with photographs, plus a priced scope for anything that fails

What it costs in Auckland

An independent Healthy Homes assessment on a standard Auckland house generally runs a few hundred dollars, and larger or harder-to-access properties cost more. The number that matters more is the remediation, which is why we quote the assessment and the fix together rather than leaving you with a report and no price. Across the properties we work on, the total spend to bring a non-compliant Auckland rental to full compliance lands in the $4,000 to $8,000 range set out above, with insulation and heating carrying most of it.

Where landlords lose money is sequencing, not pricing. Book five separate trades and you pay five call-out fees, take five days off, and still end up coordinating between them.

The order to do the work in

Fix in this order, because each step affects the next:

• Moisture first. Drainage, gutters and the ground moisture barrier. Insulating over a wet subfloor wastes the insulation
• Insulation second. Ceiling and underfloor, while the roof space and subfloor are already open
• Ventilation third. Fans and ducting, which usually means working in the same roof space
• Heating fourth. Size the heater after insulation goes in, not before, or you’ll buy more capacity than the room needs
• Draught stopping last. Cheapest, quickest, and easiest to do once everyone else is off site

That order is also why one contractor handling all five beats five contractors handling one each. We have the five standards checked off in one visit and run the remediation through the same job number, so the heat pump gets sized after the insulation is in rather than before.

Healthy Homes compliance note: Passing an assessment is not the end of it. The standards must be maintained for the life of the tenancy, and every new or renewed tenancy agreement needs a signed compliance statement. Our guide to the compliance statement covers what has to be on it, and the Tenancy Services compliance statement page sets out the legal requirement.

If you manage rentals across Auckland and need the assessment and the remediation done together, extractor fans, insulation upgrades, heat pump installation, ground moisture barriers and draught stopping, our landlord services team handles all of it under one call. No coordinating five separate trades. Property managers can also set up a standing arrangement for Healthy Homes assessments and compliance work across their full portfolio.

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WRITTEN BY SUPERIOR PROPERTY SERVICES

Superior Property Services is an Auckland-wide property maintenance company offering plumbing, electrical, painting, flooring, minor alterations, and general property maintenance. We are the one call for all your property needs — serving homeowners, landlords, property managers, and investment property owners across Auckland. Part of the Superior Renovations group.

References

1. Tenancy Services — Healthy homes standards
2. Tenancy Services — Heating standard
3. Tenancy Services — Insulation standard
4. Tenancy Services — Ventilation standard
5. Tenancy Services — Moisture ingress and drainage standard
6. Tenancy Services — Draught stopping standard
7. Tenancy Services — Healthy homes compliance statement
8. EECA — Warmer Kiwi Homes programme