When you rent to a group of flatmates on a single tenancy agreement – a common setup across Auckland’s North Shore, where shared housing is in high demand – you’re relying on one legal mechanism more than any other: joint and several liability. It’s what lets you recover full rent or repair costs from the group, even if only one person is responsible. But it also means that when one tenant wants out, the situation isn’t as simple as them just leaving.
Here’s a practical, step-by-step look at how a joint tenancy agreement works for landlords, what to do when one tenant gives notice, and when to bring a guarantor into the picture. If you’re weighing up whether to handle this yourself or hand it to a property management specialist, it’s worth understanding the mechanics first.
Step 1: Understand What You’re Actually Protected By
Joint and several liability means every tenant named on the agreement is responsible for the whole tenancy, not a personal share of it. A few practical examples:
- Four flatmates pay $700 a week. One stops paying their $175 share – you can recover the full $700 from any of the remaining three.
- A guest at a flat gathering damages a wall. Every named tenant can be held responsible for the repair, not just whoever invited the guest.
This only applies to people actually named on the agreement. A flatmate who hasn’t signed isn’t a tenant under the Residential Tenancies Act (RTA) — they’re answerable to the lead tenant, not you, and disputes involving them go to the Disputes Tribunal rather than the Tenancy Tribunal. Practical takeaway: get every adult occupant signed onto the agreement wherever you can.
Step 2: Know Your Options the Moment a Tenant Gives Notice
What happens next depends entirely on the tenancy type.
If it’s periodic: any named tenant giving the standard 21 days’ notice ends the tenancy for the whole group, not just themselves. If the rest want to stay, you need to move fast to get a new agreement signed before that notice period runs out.
If it’s fixed-term: the departing tenant has no automatic right to leave early. You and the remaining tenants will typically choose between:
- Variation – replace the departing tenant with someone new while the rest of the agreement stays intact. Requires written agreement from you and the remaining tenants. You can reasonably charge for costs like credit checks and paperwork.
- Assignment – transfer the entire tenancy to a new group. Needs the outgoing tenant’s written consent and yours. Since February 2021, you generally can’t refuse outright — only decline unreasonably, and that decision can be tested at the Tenancy Tribunal.
Step 3: Don’t Skip the Admin
Whichever path you take, update the bond record immediately. This is the single most commonly missed step in a mid-tenancy change, and it causes real problems later if the bond doesn’t match who’s actually living there. If you manage the property yourself and need a hand sorting the paperwork, our team can talk you through it.
Step 4: Decide Whether a Guarantor Is Worth Requiring
A guarantor covers rent or damage costs if a tenant can’t. The RTA doesn’t regulate guarantors at all — it’s a separate contract under general contract law, so it’s worth having one properly drafted, ideally with legal input, before signing.
Ask for a guarantor when:
- The applicant has little or no rental history (students, first-time renters, recent arrivals to NZ)
- Their income only just covers the rent
- Their references don’t fully resolve your concerns about financial stability
A guarantor is usually a parent or close family member with stable income and good credit. Once they sign, they take on the same joint and several liability as the tenants themselves – meaning they can, in theory, be pursued for a shortfall if a tenant defaults.
One caveat: enforcing a guarantee takes time and effort, similar to recovering any other debt. Use it as a backstop alongside solid vetting, not instead of it. This kind of judgement call is exactly where experienced property management earns its keep.
Step 5: Keep the Bigger Picture in Mind
A joint tenancy agreement is one of the most effective protections available to landlords renting to flatmates and groups — provided every occupant is named on it, and you act quickly the moment someone wants out. This comes up often for landlords with shared rentals across North Shore, Auckland, where flatting is popular. Move promptly on variations, assignments, and bond updates, and most of these situations resolve without becoming disputes.
Frequently Asked Questions
Can I hold all the flatmates responsible if only one of them caused the damage? Yes. Joint and several liability means every named tenant can be held responsible for damage, even if only one person, or a guest – caused it.
What if a flatmate isn’t named on the tenancy agreement? They’re a flatmate, not a tenant, under the RTA. You have no direct claim against them for rent or damage, and disputes involving them go to the Disputes Tribunal, not the Tenancy Tribunal.
Do I have to allow a tenant to be replaced if the others want to stay? You can require a reasonable process – credit checks, written agreement, an updated bond – but since February 2021 you generally can’t refuse an assignment outright, and an unreasonable refusal can be challenged at the Tenancy Tribunal.
Does the Residential Tenancies Act cover guarantors? No. Guarantor arrangements sit under general contract law, not the RTA, which is why any guarantee should be properly drafted and ideally reviewed by a lawyer before signing.
Need a Hand With Your Rental Property?
Joint tenancies, guarantors, and the paperwork that comes with them are exactly the kind of detail that’s easy to get wrong when you’re managing a rental on your own. The team at Sole Agents has been helping landlords across North Shore, Auckland navigate tenancy law, tenant changes, and everyday property management for years – so you don’t have to figure it out alone.
Get in touch with Sole Agents today for expert property management advice, or book a free rental appraisal to see how we can help you get more from your investment.
