Healthy Homes Standards and Investor Lending

What the standards actually require

The Healthy Homes Standards sit under the Residential Tenancies Act and set minimum requirements for private rental properties across five areas. They are compulsory, and they are enforced through the Tenancy Tribunal.

Landlords must also provide a compliance statement with new or renewed tenancy agreements. Tenancy Services publishes the detailed technical requirements, including the heating capacity calculator, and that is the authoritative source rather than any summary.

Why this is a lending conversation, not just a compliance one

For an investor, compliance work is capital expenditure that has to happen, often soon after settlement, and frequently before the property can be lawfully tenanted on a new agreement. That creates a cash flow problem at exactly the moment your reserves are lowest.

The mistake we see is buyers budgeting the deposit and the legal fees, then discovering the property needs a heat pump sized for the living room, underfloor insulation, a ground moisture barrier and new guttering. That can be a substantial sum, and if it is not in the lending structure it comes out of savings you may not have.

How lenders see a non-compliant rental

Lenders do not usually refuse to lend because a property is not yet Healthy Homes compliant. What they do care about is the knock-on effects:

• Valuation. A valuer assessing a property needing significant work will reflect that in the figure, which reduces your maximum loan against the same purchase price.
• Rental assessment. If the property cannot be lawfully tenanted until work is done, the rental income supporting your serviceability is delayed.
• Condition issues that overlap. Moisture, drainage and subfloor problems that trigger Healthy Homes requirements often sit alongside issues that matter more to a lender — rot, inadequate drainage, or weathertightness concerns.

So the standards rarely block an approval directly, but they frequently reduce the loan amount and delay the income.

Budgeting the work properly

1. Get a Healthy Homes assessment before you go unconditional. Specialist assessors will inspect against all five standards and give you a scoped list.
2. Price the heating requirement specifically. It is calculated for the actual living room dimensions, and an undersized unit does not comply even if it heats the room adequately in practice.
3. Check whether insulation can practicably be installed. Some older properties have access limitations that change the scope and cost.
4. Add the moisture barrier and drainage work, which are commonly missed and can involve more labour than expected.
5. Take the total to your broker and build it into the lending structure before settlement.

The upside of buying a non-compliant property

There is a genuine opportunity here for investors willing to do the work. Properties needing compliance remediation often transact at a discount to comparable compliant stock, because many buyers do not want the project. If you have priced the work accurately and funded it properly, you are buying the discount and capturing the uplift.

The condition for that working is accurate pricing. Buying at a discount and then discovering the scope was double your estimate turns the opportunity into a problem. See our rental yield calculator to model the numbers with remediation included.

How we structure investor purchases

We ask what the property needs before we ask what you can borrow, because the remediation budget belongs in the lending structure rather than in your back pocket. That usually means establishing the scope, getting it priced, then structuring the purchase and the work together.

Send us the property and the assessment if you have one. Our investment property service page explains how we approach investor lending.

A realistic compliance budget

Costs vary by property, region and contractor, so treat the following as a structure for your own quoting rather than a price list. What you need priced, item by item:

1. Heating. A fixed heater sized for the living room, using the official heating capacity calculation. Larger or poorly insulated living rooms need larger units, and in some cases more than one appliance is required.
2. Ceiling insulation. Top-up or full replacement to the required standard, depending on what is there.
3. Underfloor insulation. Only where there is accessible suspended flooring. Access limitations change the cost significantly.
4. Ground moisture barrier. Required where there is an enclosed subfloor. Often underestimated because it is labour-intensive in tight crawl spaces.
5. Extraction. Kitchen and bathroom extraction venting externally, to the required capacity.
6. Drainage and guttering. Gutters, downpipes and drains in working order, discharging appropriately.
7. Draught stopping. Blocking gaps and closing off unused open fireplaces.

Get a single quote covering all of it rather than pricing items piecemeal, and ask the assessor to confirm the scope in writing against each of the five standards. That document is what you take to your broker.

Where compliance issues overlap with lending issues

The standards are a tenancy obligation, but the physical problems they address often signal things a lender cares about more directly. A property failing the moisture and drainage standard may have:

• Poor subfloor ventilation leading to rot in bearers and joists.
• Drainage discharging against foundations, causing ongoing moisture ingress.
• Gutters that have been overflowing long enough to damage cladding or framing.

These are valuation and sometimes insurability matters, not just compliance ones. So when an assessment flags moisture or drainage, it is worth getting a builder to look at the underlying cause rather than just quoting the minimum compliance fix. A cheap remedy that leaves the cause in place will cost more later, and a valuer may well notice.

This is also why we ask investors for the builder's report alongside the Healthy Homes assessment. Read together they give a much clearer picture of what the property actually needs. See our guide to LIM and builder's reports.

Timing the work around your tenancy

The practical sequencing problem is that remediation is easiest in an empty property, but an empty property earns nothing and your lender has assessed your serviceability partly on rental income.

Options worth discussing with your adviser before settlement:

• Settle and complete work before tenanting. Cleanest execution, but you carry the mortgage with no income for the period.
• Buy with a tenant in place and work around them. Income continues, but scheduling is harder and some work is impractical while occupied.
• Negotiate the work as a vendor condition. The vendor completes compliance before settlement. Best outcome for you where the vendor agrees, though it will usually be reflected in the price.

Whichever route you take, build the vacancy period or the remediation cost into your serviceability assessment honestly. A plan that assumes rent from week one and no remediation cost is not a plan.

This article explains how New Zealand lenders generally assess these situations. It is general information, not personalised financial advice, and lender policy changes often — check your own position with a registered adviser. Official sources: Reserve Bank of New Zealand for lending policy and the OCR, and Sorted.org.nz for independent government-backed money guidance.