Rent reviews are one of the simplest ways to protect your return on a rental property, and also one of the easiest to get wrong. Increase too little, too rarely, and you’re leaving money on the table for years. Increase too much, too suddenly, and you risk losing a good tenant over what might have been a manageable adjustment.
Here’s how the rules work, and how to approach a rent review in a way that protects your return without pushing a good tenant out the door.
The Legal Rules You Need to Work Within
Rent increases in New Zealand are governed by the Residential Tenancies Act, and the framework is fairly simple once you know it.
- Once every 12 months. Rent can only be increased once in any 12-month period, measured from the start of the tenancy or from when the last increase took effect, whichever is more recent.
- 60 days’ written notice. The increase can’t take effect until at least 60 days after you give written notice. The notice has to state the new rent and the date it takes effect. Verbal notice, including a conversation at the letterbox, doesn’t count.
- No statutory cap, but a market test applies. There’s no legal limit on how much rent can increase by, but if it’s substantially above market rent for comparable properties, a tenant can apply to the Tenancy Tribunal, which can set the rent back to a market level.
- Fixed-term tenancies are different. During a fixed term, rent can only be increased if the tenancy agreement includes a specific rent review clause with a clear formula or amount. Without one, the rent is locked for the entire term.
Ask yourself:
- When did the rent at this property last increase, and am I past the 12-month mark?
- Does my current tenancy agreement include a rent review clause, if it’s fixed-term?
- Have I built the 60-day notice period into my planning, rather than trying to move quickly?
How Often Should You Actually Review Rent?
Legally, once every 12 months is the minimum interval. In practice, most landlords benefit from reviewing rent annually, even if they don’t increase it every single time.
An annual review gives you a regular checkpoint to compare your rent against the current market, rather than letting years pass and discovering you’re significantly under market rent all at once. A single large catch-up increase is far more likely to upset a good tenant than several smaller, well-timed adjustments over time.
How to Set the Right Number
The goal of a rent review isn’t to charge the maximum the market will bear. It’s to keep the property realistically priced while protecting the relationship with a tenant who’s paying reliably and looking after the place.
A few things worth weighing up:
- Comparable rents in the area, for similar property types, sizes and condition
- How the tenant has performed, including payment history, property care and communication
- How long they’ve been in the property, since retaining a good long-term tenant often outweighs a slightly higher rent from someone new
- The cost and risk of vacancy if the increase pushes them to leave, including advertising, re-letting and the gap in rental income
Sometimes the right decision is a modest increase that keeps a great tenant comfortable and staying long-term. Other times, especially if rent has fallen well behind the market, a more meaningful adjustment is justified and reasonable.
How to Communicate a Rent Increase Without Losing the Tenant
The legal notice period is 60 days, but the way you communicate matters just as much as the notice itself.
Giving more notice than the legal minimum where possible gives tenants time to plan, rather than feeling ambushed. A brief explanation of why the increase is happening, referencing market comparables or rising costs like rates and insurance, tends to land better than a bare notice with no context.
It also helps to frame the review as routine rather than reactive. Tenants who understand that rent gets reviewed annually, as a normal part of the tenancy, are generally far more accepting than those facing a sudden, unexplained jump after years of no change.
Ask yourself:
- Would this increase feel fair to me if I were the tenant, given the local market?
- Have I given the tenant enough context, not just the legal minimum notice?
- Is there a risk this increase pushes out a tenant who’d otherwise stay long-term?
Why Regular Reviews Beat Reactive Ones
Landlords who review rent annually, even with modest adjustments, tend to end up closer to market rent over time than those who leave it for years and then attempt a large correction.
Small, expected increases are far easier for tenants to absorb and accept than a big jump that arrives without warning. They also reduce the temptation to push rent well above market in one go, which is exactly the scenario that risks a Tenancy Tribunal challenge.
How Wolfbrook Handles Rent Reviews
We carry out annual rent reviews for the properties we manage, comparing each property against current market data rather than relying on guesswork or outdated figures.
Where an increase is appropriate, we manage the notice period, the paperwork and the communication with the tenant, aiming to land on a figure that reflects the market while protecting a tenancy that’s working well for everyone. Where a tenant has been reliable and long-term, that relationship is factored into the recommendation, not just the numbers.
Not Sure If Your Rent Is Still at Market Level?
If it’s been a while since your last review, or you’re unsure how your rent compares to similar properties in your area, we’re happy to take a look.
Get in touch with your local Wolfbrook Property Management team, or book a free rental appraisal to see where your property currently sits.