Signing a commercial sublease can feel like a big win. You’ve found a space, the rent looks manageable, and you’re keen to get the keys and start trading.
But a commercial sublease isn’t just “renting a shop” in the everyday sense. It’s a legal document that can lock you into serious obligations (sometimes without the protections you’d normally expect in a direct lease with the landlord).
This 2026 update reflects the current New Zealand leasing environment, where costs, compliance expectations, and operational risk are front of mind for many small businesses. If you’re about to sublease, a quick legal review can be one of the simplest ways to avoid expensive surprises later.
What Is A Commercial Sublease (And Why Is It Different From A Lease)?
A commercial sublease is where the existing tenant (often called the “head tenant”) rents out all or part of their leased premises to you (the “subtenant”).
That sounds straightforward, but here’s the key difference:
- You don’t usually have a direct contract with the landlord. Your contract is with the head tenant.
- The head tenant still has obligations to the landlord under the head lease. If they breach the head lease, it can affect you.
- Your right to occupy can be “fragile” if the head lease ends. Many subleases automatically fall away when the head lease is terminated or expires.
In other words, you can do everything right as a subtenant and still face problems if the head tenant’s relationship with the landlord breaks down.
This is exactly why it’s worth treating a sublease as a high-stakes commercial arrangement, not an informal shortcut.
When Should You Get A Sublease Reviewed?
In practice, the best time to get your commercial sublease reviewed is before you sign and ideally before you pay any deposit or fit-out costs.
It’s especially important to get a review if:
- you’re taking on a longer term (e.g. 2–5 years) or you’re investing heavily in fit-out
- you’re moving into a retail premises where trading hours, signage and customer access matter
- you’re subleasing part of a premises (shared bathrooms, shared entrance, shared power/internet)
- the head tenant is offering “standard terms” and pushing you to sign quickly
- you’re unsure whether you need landlord consent (or whether it has actually been obtained)
- you’re responsible for outgoings but you can’t clearly see what those are
Even if the sublease looks short and simple, you’re still making commitments that can affect cash flow, staffing decisions, and your ability to operate your business.
If you already have a draft sublease, a Commercial Sublease Review can help you understand what you’re agreeing to and what should be negotiated.
What A Sublease Review Actually Checks (The Clauses That Cause The Most Problems)
Most sublease disputes aren’t caused by one dramatic clause. They happen because the sublease is vague, inconsistent with the head lease, or silent on practical issues that matter day-to-day.
A proper review usually focuses on the risk areas below.
1) Whether The Sublease Matches The Head Lease
This is a big one. Many subleases say you must comply with the head lease, but you may not have actually been given a full copy of it (including variations).
Your lawyer will usually check things like:
- how long the head lease runs for (and whether your sublease term exceeds it)
- whether the head lease allows subleasing at all, and on what conditions
- what the head lease says about permitted use, signage, noise, trading hours and fit-out approvals
If your sublease contradicts the head lease, you can end up in an impossible position: your sublease says one thing, the head lease requires another, and you’re stuck in the middle.
2) Landlord Consent And Approval Conditions
Many head leases require the landlord’s written consent before any sublease starts. Sometimes consent must be on specific forms, sometimes conditions apply, and sometimes the landlord can impose extra requirements (like financial information or guarantees).
A review helps confirm:
- whether consent is required
- whether consent has been properly obtained (not just promised)
- what happens if consent is delayed or refused
This matters because if the sublease starts without valid consent (where required), the landlord may treat it as a breach by the head tenant. And that can put your occupancy at risk.
3) Rent, Outgoings And “Hidden” Costs
Subleases can be deceptively expensive if the drafting isn’t clear.
A review typically checks:
- how rent increases work (fixed increases, CPI, market review)
- what “outgoings” include (rates, insurance, body corporate, repairs, management fees)
- how utilities are charged (separately metered vs apportioned)
- whether you’re contributing to capital works or major building expenses
- GST wording (whether amounts are “plus GST”)
It’s also common for disputes to arise where the head tenant passes on outgoings without providing supporting invoices, or where the subtenant isn’t told about upcoming cost increases.
4) Repairs, Maintenance And Who Pays For What
Repairs are one of the most misunderstood areas in commercial leasing.
Your review should clarify:
- who is responsible for day-to-day maintenance (including HVAC, plumbing, electrical)
- who pays when something breaks (and what happens if it affects trading)
- whether you must contribute to building maintenance even though you’re not the head tenant
This is where “it’s always been like that” arrangements can go wrong. A sublease should reflect the reality of the premises, not assumptions.
5) Fit-Out, Alterations And Make-Good
If you’re planning to do fit-out works, you need to know what’s allowed and what approvals are required. Many head leases require landlord approval for alterations, even if the head tenant says “go ahead”.
A review will usually check:
- whether you can alter the premises and install fixtures/signage
- who owns the fit-out during the term
- what your make-good obligations are at the end (remove, reinstate, repaint, professional cleaning)
Make-good can be a major end-of-term cost. If you don’t price it in from day one, it can sting later.
6) Assignment, Sharing The Space, Or Exiting Early
Business plans change. You might outgrow the space, decide to sell, or need to reduce overheads.
A review helps you understand:
- whether you can assign the sublease to a buyer if you sell your business
- whether you can bring in a business partner or share the premises
- what happens if you need to terminate early (and whether there are break fees)
Even if your sublease is “only” 12 months, getting stuck paying rent for a space you can’t use is still a cash-flow nightmare.
What Are The Real Risks Of Signing A Sublease Without Review?
It’s tempting to skip a review to save time and costs. But in commercial leasing, the problems usually cost far more than a legal check upfront.
Here are the common risks we see when subleases aren’t reviewed properly.
You Could Lose The Space If The Head Lease Ends
If the head tenant defaults under the head lease (for example, they stop paying rent), the landlord may terminate the head lease. In many cases, your sublease ends too, because your rights are tied to the head tenant’s rights.
This is especially tough if you’ve invested in fit-out, signage, equipment, and marketing.
You Might Be Bound By Rules You’ve Never Seen
Subleases often say you must comply with the head lease or building rules, but they don’t attach them.
This can create issues like:
- restrictions on your permitted business activities
- limits on signage
- requirements for landlord approval before you change anything
- trading hour obligations that don’t match your business model
You Can End Up Paying More Than You Expected
Outgoings, insurance contributions, maintenance obligations, and rent review clauses can all change what the deal really costs.
Even small misunderstandings (like whether utilities are separately metered) can turn into ongoing disputes.
Disputes Become Personal (And Operational)
Unlike a direct lease relationship with a landlord, your sublease relationship is with another business. That can make conflicts more personal, especially if you’re sharing premises, a kitchen, a reception area, or customer-facing space.
The contract is what keeps things professional when pressures rise.
Practical Tips Before You Sign A Commercial Sublease
A legal review is one part of the picture. You can also take a few practical steps to protect yourself from day one.
Ask For The Head Lease And Any Variations
You don’t need to read every page like a lawyer, but you should at least confirm:
- the head lease end date (and any renewal rights)
- the permitted use clause
- any restrictions that could affect your operations
If you’re only given “relevant extracts”, be careful. The missing parts often contain the obligations that matter.
Confirm Landlord Consent In Writing
If landlord consent is required, you want to see that consent before you commit money to fit-out or stock.
If the head tenant says consent is “in progress”, your sublease should clearly explain what happens if consent is delayed or not granted (including whether you can walk away).
Map The Space And Shared Areas
If you’re subleasing part of a premises, clarify what is included:
- exclusive areas (your office, your shop floor)
- shared areas (bathrooms, kitchen, hallways, car parks)
- storage areas and who controls access
These details sound minor until a disagreement happens mid-week when you’re trying to trade.
Be Clear On Insurance And Liability
Commercial premises come with risk: customers can slip, property can be damaged, and equipment can fail.
You’ll want to know:
- what insurance the head tenant holds
- what insurance you must hold
- who is responsible if something goes wrong in a shared area
This is also a good time to think about your broader legal setup, like having well-drafted Service Agreement terms if you’re providing services from the premises.
Don’t Treat “Standard Terms” As Non-Negotiable
Subleases are often negotiable, especially on practical points like:
- fit-out timelines
- rent-free periods while you set up
- limits on outgoings
- clarity around make-good
A review can help you identify the clauses worth negotiating, so you’re not trying to renegotiate everything (and slowing the deal down).
If you’re still deciding whether subleasing is right for you, it can also help to compare with a direct lease arrangement. A Commercial Lease Review can highlight the differences in risk between the two options.
Key Legal Documents That Often Go Hand-In-Hand With A Sublease
When you move into a commercial space, the sublease is only one part of the legal foundation. Depending on your business model, you might also need supporting legal documents to protect your operations.
Some common examples include:
- Business terms and customer terms (especially if you’re taking bookings, deposits or recurring payments), often handled through Business Terms
- A privacy policy if you collect customer details (online bookings, CCTV, email marketing lists), supported by a Privacy Policy
- Contractor or supplier agreements if you rely on third parties to deliver your service or fit-out
- Insurance certificates and compliance documents required by the head tenant or landlord
If you’re fitting out and bringing in trades, it’s also smart to think about how you’ll manage risk with your suppliers and contractors. Clear contracts can prevent the “who’s responsible for the delay?” argument before it starts.
And if the sublease is part of buying or selling a business (for example, you’re taking over a space as part of a purchase), the lease and occupancy documents often need to be reviewed alongside sale terms. In that scenario, a Legal Due Diligence Package can help you check what you’re really stepping into.
Key Takeaways
- A commercial sublease is different from a direct lease because your rights usually sit under the head tenant’s lease with the landlord, which can create extra risk if the head lease ends or is breached.
- Having your commercial sublease reviewed before signing helps you spot mismatches with the head lease, unclear cost obligations, and practical issues like fit-out permissions and make-good requirements.
- Subleases commonly cause disputes around landlord consent, outgoings, repairs and maintenance, shared areas, and what happens if either party wants to exit early.
- Even if the rent looks affordable, “hidden” costs (outgoings, insurance, maintenance, rent review clauses, GST wording) can materially change the true cost of the premises.
- If you’re investing in fit-out or relying on the site for daily trading, a legal review is a simple way to protect yourself from day one and avoid expensive disruptions later.
- A sublease often sits alongside other key documents like customer terms and a privacy policy, so your legal foundations stay consistent as you operate and grow.
If you’d like help reviewing your commercial sublease (or negotiating better terms before you sign), you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.
