New Zealand’s rental laws have changed more in the last two years than in the previous decade. For anyone signing as a guarantor on an apartment lease, those changes directly affect what you’re actually on the hook for. A guarantor promises to cover the tenant’s obligations if they can’t pay. What those obligations are has shifted — notice periods, rent increase rules, bond processes, and landlord termination rights all look different now than they did in 2023.
Disclosure: Some links on this page are affiliate links. If you make a purchase through them, Britwealth may earn a commission at no extra cost to you. We only include products and services that are relevant to the topic.
This article is general information only and does not constitute professional advice. For your specific situation, consult a qualified professional.
These aren’t just small tweaks. The rules around fixed-term tenancies, rent increases, Healthy Homes standards, and how bonds are lodged have all been rewritten. If you’re acting as a guarantor, you’re agreeing to cover obligations set by this new framework — not the old one. Fixed-term leases in New Zealand now behave differently at expiry, and that directly affects the risk a guarantor takes on. Here’s what you actually need to know.
In the NZ rental context, a guarantor is someone who signs a legal agreement to cover the tenant’s rent, bond, and any damage costs if the tenant fails to pay. Unlike a co-signer, a guarantor only pays when the tenant defaults — but once you sign, you’re on the line for the full amount.
What I tend to notice is that people agree to be a guarantor for a friend or family member without fully understanding what the current law says about termination, rent increases, and bond liability. The rules have changed enough that the old assumptions don’t hold.
What a Guarantor Actually Pays: The Full Cost Picture
The amount a guarantor could be asked to cover goes well beyond the weekly rent. Under the current Residential Tenancies Act framework, a guarantor is liable for the tenant’s full obligations — and those obligations include several layers of cost that aren’t always obvious at signing.
→ Scroll right to see all columns
| Cost Type | Typical Amount | When Guarantor is Liable |
|---|---|---|
| Weekly rent | Varies by property and region | Immediately if tenant defaults on payment |
| Rental bond | Up to 4 weeks’ rent (standard) + up to 2 weeks’ pet bond | If tenant damages property or leaves without paying |
| Pet damage (beyond fair wear and tear) | Full cost of repair or replacement | Tenant is fully liable for careless and accidental pet damage |
| Rent arrears during notice period | Up to 90 days’ rent in some cases | If tenant stops paying while the notice period runs |
| Tenancy Tribunal orders | Up to $100,000 per tenancy for consolidated cases | If the tenant is ordered to pay and cannot |
One less obvious cost is the pet bond. Under the new rules expected to take effect in late 2025, landlords can charge a pet bond of up to two weeks’ rent in addition to the standard bond. That’s on top of the tenant’s full liability for any pet damage beyond fair wear and tear. If you’re guaranteeing a tenant with a pet, you’re taking on that extra exposure. The total bond cannot exceed four weeks’ rent, but the pet bond sits outside that cap in some cases.
For anyone unsure about their liability, getting property law advice from a qualified solicitor before signing as a guarantor can save thousands. A single clause about pet damage or rent review timing can change the risk profile entirely.
Where Guarantors Get It Wrong
Most people who sign as a guarantor do so once, maybe twice. They don’t have a frame of reference for how the law has shifted. The research points to three recurring gaps that catch guarantors out.
Assuming a fixed-term tenancy ends cleanly
Under the current law, fixed-term tenancies automatically convert to periodic tenancies at the end of the term unless either party gives notice between 90 and 21 days before the expiry date. A lot of guarantors assume the lease ends on the date written in the contract. It doesn’t. If neither party acts, the tenancy rolls over to a periodic arrangement, and the guarantor’s liability continues indefinitely. The tenant can end it with 21 days’ notice, but the landlord can end it with 90 days’ notice — or 42 days if selling. That means a guarantor could be on the hook for months longer than expected.
Not checking Healthy Homes compliance before signing
Every private rental in New Zealand must meet minimum Healthy Homes standards for heating, insulation, ventilation, moisture ingress, and draught stopping. Landlords are legally required to include a compliance statement in the tenancy agreement. If the property doesn’t meet the standards, the tenant has grounds to apply to the Tenancy Tribunal for a rent reduction order — which can extend up to 12 months. For a guarantor, that means the tenant’s rent could be reduced by tribunal order, but the landlord might still pursue the original rent amount from the guarantor if the tenant stops paying the difference. Always ask to see the Healthy Homes statement before agreeing to guarantee a lease.
Overlooking the bond refund process
Bond lodgements are now fully online — no signatures required. But the refund process still requires both parties to agree on the amount. If the tenant and landlord disagree, the bond stays with Tenancy Services until the dispute is resolved. A guarantor who paid the bond on the tenant’s behalf can end up waiting months for their money. Understanding how bond disputes work before you sign can prevent a long wait for your cash.
The mistake I see most often is people assuming the bond is a simple deposit that comes back automatically. It’s not. If the tenant causes damage — or if the landlord claims they did — the bond can be tied up for weeks or months while the tribunal decides.
How the Guarantor Process Works Under the Updated Law
What happens when you sign as a guarantor
You’ll typically sign a separate guarantor agreement or a clause within the tenancy agreement. The document must include the full names of all parties, the rental address, the rent amount and payment frequency, the bond details, and the Healthy Homes compliance statement. You should also check whether the agreement includes clauses about pets, smoking, maintenance responsibilities, and garden care. Once signed, your liability starts immediately and continues until the tenancy ends — including any automatic rollover to a periodic tenancy. You don’t get a separate notice when the fixed term expires. It’s your responsibility to track the dates.
What the 2025/2026 changes mean for your liability
The reintroduction of no-cause termination effective 30 January 2025 means landlords can end periodic tenancies without giving a reason — as long as they provide 90 days’ notice. For a guarantor, this is a double-edged sword. On one hand, the tenant can be asked to leave without justification, which might end your liability sooner than expected. On the other hand, if the tenant stops paying rent during those 90 days, you’re still liable for the full notice period. The 21-day notice period for tenants to end a periodic tenancy is shorter than the previous 28 days, which gives tenants more flexibility to exit — but it also means a guarantor has less time to prepare for the tenancy ending.
Emerging changes: pet provisions and compliance requirements
The pet provisions expected to take effect in late 2025 will require tenants to get written consent from the landlord before keeping a pet. Landlords must respond within 21 days and can only refuse on reasonable grounds such as property suitability or body corporate rules. If a tenant keeps a pet without consent, the guarantor could be liable for any damage. The pet bond of up to two weeks’ rent is an additional cost that may not be covered by the standard bond. For properties that are part of a body corporate, pets may be prohibited regardless of what the tenancy agreement says — so a tenant who brings in a pet could be in breach of both the lease and the body corporate rules, and the guarantor is on the line for the consequences.
For complex situations — especially those involving body corporate rules, pet disputes, or bond claims — consulting a landlord-tenant law specialist can clarify what a guarantor’s actual obligations are before a dispute arises.
Frequently Asked Questions About Guarantor Requirements in NZ
Can a guarantor be held liable after the fixed term ends? ▾
Is there a limit on how much a guarantor can be asked to pay? ▾
What happens if the tenant wants to get a pet after I’ve signed as guarantor? ▾
Can I withdraw as a guarantor before the tenancy ends? ▾
Does the Healthy Homes standard affect my liability as a guarantor? ▾
Am I notified if the landlord issues a termination notice to the tenant? ▾
The New Reality for NZ Guarantors
The changes to the Residential Tenancies Act — from no-cause termination to automatic rollover of fixed-term tenancies — have made the guarantor’s role more complex than it used to be. The biggest shift is that a fixed-term lease no longer guarantees a clean end date. Without active notice from either party, the tenancy keeps going, and so does your liability. The pet provisions, Healthy Homes requirements, and online bond system all add layers that didn’t exist a few years ago. If you’re thinking about signing as a guarantor, the single most useful thing you can do is read the full tenancy agreement — including the Healthy Homes statement and any clauses about pets, smoking, and maintenance — before you put your name on the line.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read Top Tips for Renting a Beach Apartment in New Zealand.
Sources and Further Reading
Understanding Apartment Lease Length Options in New Zealand — A practical guide to fixed-term versus periodic tenancies and what each means for tenants and guarantors.
Navigating Lease Early Termination Due to Health Issues — Explains the family violence and hardship provisions that allow tenants to exit early, and how those affect guarantor liability.
Property Plus NZ (2026). The New Rental Agreement: Your Rights and Obligations in 2026. 🔗
McCaw Lewis (2024). Understanding the Residential Tenancies Amendment Act 2024: Key Changes to New Zealand’s Rental Laws. 🔗
Harcourts NZ (2025). Important Updates to the Residential Tenancies Act. 🔗
