Lo Cheng 4 May 2026 7 min read

How Rent Reviews Work in NZ Commercial Property: A Landlord’s Guide

Rent reviews are one of the most important — and most misunderstood — aspects of commercial property leasing in New Zealand. Whether you're a landlord managing a single property in Auckland or a portfolio spanning the country, understanding how rent reviews work under NZ commercial leases can mean the difference between maximising your investment returns and leaving money on the table.

What Is a Rent Review in NZ Commercial Property?

A rent review is the process by which the rent payable under a commercial lease is reassessed — typically to reflect current market conditions. In New Zealand, the terms for rent reviews are set out in the lease agreement, most commonly based on the Auckland District Law Society (ADLS) standard form lease.

The purpose of a rent review is straightforward: to ensure the rent being paid is fair and reflects the property's current market value. For commercial property owners, rent reviews are a key mechanism for protecting returns against inflation and market movement.

Most commercial leases in NZ provide for rent reviews at regular intervals — commonly every one, two, or three years — depending on what was agreed at the time the lease was signed.

Types of Rent Reviews in NZ Commercial Leases

Not all rent reviews are the same. Understanding the different types is essential for any landlord managing commercial property in New Zealand:

Market Rent Review

The most common type of rent review in NZ commercial property. The rent is adjusted to reflect the current market rent — what a willing tenant would pay and a willing landlord would accept for the property on the open market.

Market rent reviews are typically conducted by a registered valuer who considers:

Comparable rental evidence from similar properties in the area
The property's location, condition, and specification
Current market conditions and demand
The remaining lease term and tenant covenants

CPI Rent Review (Consumer Price Index)

The rent is adjusted in line with the Consumer Price Index — essentially an inflation adjustment. CPI reviews are simpler and less contentious than market reviews but may not fully capture property market movements.

CPI reviews are sometimes alternated with market reviews. For example, a lease might provide for CPI adjustments in years one and two, with a market review in year three.

Fixed Percentage Increase

Some leases specify a fixed annual or periodic increase — for example, 3% per annum. These are less common in NZ commercial property but provide certainty for both parties.

Ratchet Clause — What NZ Landlords Need to Know

A ratchet clause is a provision that prevents the rent from decreasing at review, regardless of market conditions. In other words, if the market rent has fallen below the current passing rent, the rent stays where it is.

Ratchet clauses are common in NZ commercial leases and are important for landlords seeking to protect rental income. However, they can be a point of negotiation with tenants, particularly in soft market conditions.

Key insight: Always check whether your lease contains a ratchet clause. In a declining market, the ratchet protects your rental income. In a rising market, the market review mechanism captures the upside. Together, they create a one-way valve that favours the landlord — which is exactly why tenants and their advisors pay close attention to these clauses during lease negotiation.

How the Rent Review Process Works in NZ

The rent review process under a typical ADLS commercial lease follows a defined sequence. Here's what to expect:

Step 1: Review Date Triggers the Process

Your lease will specify rent review dates. A professional commercial property manager will diarise these well in advance — typically 3 to 6 months before the review date — to ensure nothing is missed.

Step 2: Landlord Initiates the Review

The landlord (or their property manager) issues a notice to the tenant proposing a new rent. This notice must comply with the terms of the lease — including format, timing, and delivery method.

Step 3: Tenant Responds

The tenant has a specified period (usually 21 working days under the ADLS lease) to either accept the proposed rent or dispute it.

Step 4: Negotiation

If the tenant disputes the proposed rent, both parties attempt to negotiate an agreed figure. This is where having a property manager with strong market knowledge and rental evidence is invaluable.

Step 5: Independent Determination

If negotiation fails, the matter is typically referred to an independent valuer (or sometimes an arbitrator, depending on the lease terms). The independent valuer determines the market rent, and their decision is binding on both parties.

Step 6: Rent Adjustment Takes Effect

Once the new rent is determined — whether by agreement or independent determination — it takes effect from the review date (not the date of agreement). This means any difference between the old and new rent is payable in arrears.

Common Rent Review Mistakes NZ Landlords Make

Across our national portfolio of 22 clients and over $500 million in managed assets, we've seen these mistakes cost landlords significant money:

1. Missing review dates

If a rent review date passes without action, you may lose the opportunity to increase rent until the next scheduled review — sometimes years away. Professional commercial property management includes rigorous diary management to ensure every review date is actioned.

2. Not obtaining proper market evidence

A landlord who proposes a rent increase without supporting evidence will struggle in negotiations and at determination. Having up-to-date comparable rental evidence from similar commercial properties in Auckland, Wellington, Christchurch, or wherever your property is located is essential.

3. Poor communication with tenants

Rent reviews don't have to be adversarial. The best outcomes come when landlords (or their property managers) approach the review as a professional, evidence-based conversation. Surprising a tenant with an aggressive rental increase and no prior discussion rarely leads to a good result.

4. Ignoring the lease terms

Every lease has specific procedural requirements for rent reviews. Failing to follow these — such as not issuing the notice in the correct form or within the required timeframe — can invalidate the review.

5. Not understanding the market

In some markets, rents are rising. In others, they're flat or falling. A landlord who proposes a significant increase in a soft market will waste time and may damage the tenant relationship. Conversely, a landlord who accepts the status quo in a rising market leaves money on the table.

How Often Should Rent Reviews Happen?

The review frequency is set out in the lease, but here's what's typical for NZ commercial property:

Annual reviews — most common for CPI or fixed percentage reviews
Biennial reviews (every 2 years) — common for market rent reviews
Triennial reviews (every 3 years) — used for longer-term leases, sometimes alternating with CPI

When negotiating a new lease, consider the review structure carefully. More frequent market reviews give you more opportunities to capture market growth. Less frequent reviews provide tenants with more certainty, which can be a negotiating tool to secure longer lease terms.

Rent Reviews and Tenant Retention

Rent reviews are sometimes seen as a potential friction point in the landlord-tenant relationship. But they don't have to be.

Commercial tenants in NZ generally understand that rent reviews are a standard part of leasing. What they value is:

Transparency — being given clear evidence for any proposed increase
Communication — being given notice and the opportunity to discuss
Fairness — a review that reflects genuine market conditions, not an arbitrary figure
Professionalism — a process managed by experienced commercial property professionals

Handled well, a rent review actually strengthens the tenant relationship by demonstrating that the landlord runs a professional, well-managed property. This contributes directly to tenant retention — and tenant retention is one of the most valuable outcomes in commercial property management.

How We Execute Rent Reviews: Re-Leased Property Management Software

At AssetPro, we use Re-Leased — a purpose-built property management software platform — to manage and execute rent reviews across our entire national portfolio. Re-Leased is specifically designed for commercial property management and gives us a significant edge in the rent review process.

Here's how Re-Leased supports our rent review workflow:

Automated diary management — Re-Leased automatically flags upcoming rent review dates well in advance, ensuring no review is ever missed across our portfolio of 22 clients. This eliminates one of the most common and costly mistakes in commercial property management.
Centralised lease data — every lease term, review type (market, CPI, fixed), ratchet clause, and historical rental figure is stored in one place. When a review is triggered, we have instant access to the full lease history.
Financial tracking — Re-Leased tracks the financial impact of each rent review, showing the before-and-after rental position and the overall portfolio uplift.
Communication trails — all correspondence with tenants during the review process is logged within the system, creating a clear audit trail from initial notice through to agreed or determined outcome.
Reporting to landlords — we generate rent review reports directly from Re-Leased, giving property owners clear visibility of upcoming reviews, completed reviews, and the rental growth achieved.

Using technology like Re-Leased means our rent review process is systematic, transparent, and scalable — whether we're managing five reviews or fifty in any given quarter.

Why Professional Rent Review Management Matters

Rent reviews directly impact your rental income — the single most important driver of commercial property returns. Getting them right requires:

Market knowledge across Auckland and NZ
Access to current comparable rental evidence
Understanding of ADLS lease provisions
Professional communication and negotiation skills
Rigorous diary management to never miss a review date
The right technology to execute reviews systematically at scale

At AssetPro, we combine deep market expertise with Re-Leased property management software to manage rent reviews across a nationwide portfolio spanning Auckland, Wellington, Christchurch, and regional centres throughout New Zealand. Our national reach means we have rental evidence and market intelligence from across the country — giving our clients an edge at review time that a purely local manager can't match.

Talk to AssetPro About Your Rent Review Strategy

Rent reviews are one of the most important value levers in commercial property — and the most commonly mismanaged. AssetPro handles reviews across all lease types, using Re-Leased software to track key dates and ensure no review is ever missed.

Talk to us at assetpro.co.nz — Lo Cheng is happy to discuss your portfolio directly.

Lo Cheng
Founder & Director, AssetPro