Signing a commercial lease is one of the most consequential commitments a business owner will make. Unlike a residential tenancy, where most terms are standardised and heavily regulated by statute, a commercial lease is a heavily negotiated contract where the parties have considerable freedom to set their own terms. That flexibility is both an opportunity and a risk. An opportunity, because you can tailor the agreement to suit your business. A risk, because once signed, a poorly understood clause can lock you into years of unfavourable conditions that drain your cash flow, restrict your flexibility, and complicate your exit.
Many tenants, particularly small business owners entering their first commercial lease, approach the process with a focus almost entirely on the headline rent. That is understandable. Rent is the most visible cost and the easiest to compare across properties. But in practice, the clauses that cause the most grief over the life of a lease are rarely about the base rent itself. They are about how the rent increases, who pays for what, what happens when things go wrong, and what it costs you to leave.
This guide is written for Australian tenants, whether you are negotiating your first lease, renewing an existing one, or considering a new premises. It covers the clauses that carry the most financial and operational risk, explains what to look for, what to push back on, and where professional advice is essential.
Understanding Why Every Clause in a Commercial Lease Matters
A commercial lease is not a standard form document, even though it may look like one. Landlords and their advisers draft lease templates that, understandably, favour the landlord’s interests. The tenant’s job is to read every clause carefully, understand its implications, and negotiate amendments where the balance is unfair or the risk is disproportionate.
Unlike retail leases, which in most Australian states and territories are governed by specific legislation that provides certain tenant protections, purely commercial leases for offices, warehouses, and industrial premises operate largely under general contract law. There are fewer statutory safety nets. The words on the page, and how they are negotiated, are decisive.
This does not mean the landlord is trying to exploit you. Most commercial lease negotiations are conducted in good faith by both parties. But the default position of any standard lease template will typically allocate more risk to the tenant than is necessary, simply because the landlord’s solicitor drafted it that way. Your role is to identify where that risk allocation is unreasonable and negotiate it to a fairer position before you sign.
Lease Term and Renewal Options
The lease term is the period for which you are committed to the premises. Commercial lease terms in Australia typically range from three to ten years, with five years plus a five-year option being one of the most common structures for small to medium businesses.
The length of your initial term needs to balance two competing considerations. A longer term gives you certainty of tenure, which protects your investment in the fit-out and allows you to build goodwill attached to the location. A shorter term gives you flexibility to relocate if your business outgrows the space, the location does not perform as expected, or market conditions change.
Renewal options give you the right, but not the obligation, to extend the lease for an additional period at the end of the initial term. Options are valuable because they provide security without locking you in. However, option clauses contain traps that catch many tenants.
The most critical trap is the notice requirement. To exercise your option, you must provide written notice to the landlord within a specific window, typically three to six months before the current term expires. If you miss this deadline, even by a single day, you may lose the option entirely. Set a reminder well in advance and treat this deadline as non-negotiable.
The second trap is the assumption that the option rent will be at the current rate. In most cases, exercising an option triggers a market rent review, which means the new rent will be determined by the market value at the time of renewal, not the rent you were paying. This can result in a significant increase if market conditions have moved against you. Negotiate for a cap on the market review at option renewal, or at least understand the mechanism before you commit to the initial lease.
Rent Review Clauses and How They Affect Your Bottom Line
Rent does not stay the same for the duration of a commercial lease. Rent review clauses determine how and when your rent increases, and they are one of the most financially significant provisions in the entire agreement. Understanding the different types of review is essential.
Fixed percentage increases. The lease specifies a fixed annual increase, commonly 3 to 4 per cent per annum. This provides certainty for both parties, but in a soft market, you may end up paying above market rates in the later years of the lease. Conversely, in a strong market, a fixed increase protects you from larger jumps.
CPI increases. The rent is adjusted annually in line with the Consumer Price Index. CPI reviews generally result in lower increases than fixed percentages in most economic environments, but they can spike during periods of high inflation. Ask which CPI index is used and confirm the methodology for calculation.
Market reviews. The rent is adjusted to reflect the current market value of the premises, typically assessed by an independent valuer. Market reviews can result in increases or decreases. However, many landlords include “ratchet clauses” that prevent the rent from falling below the existing level at a market review. In some states, ratchet clauses are prohibited for retail leases, but they can appear in purely commercial leases. If your lease contains a ratchet clause, you lose the benefit of a market review in a downturn while remaining exposed to increases in an upswing. Push back on ratchet clauses wherever possible.
Negotiation points to consider. Seek a cap on fixed percentage increases, particularly for longer lease terms. If CPI is used, ensure the specific index and calculation methodology are clearly defined. For market reviews, negotiate for a neutral valuation process with each party appointing a valuer and a third acting as umpire in the event of disagreement. And always resist ratchet clauses unless you are compensated with other concessions.
Outgoings and Who Pays for What
Outgoings are the operating costs of the building that the landlord passes on to tenants. They can include council rates, water rates, land tax, building insurance, common area maintenance, cleaning, security, fire safety, air conditioning maintenance, and management fees.
In some leases, outgoings are included in the gross rent. In others, they are charged as a separate amount on top of the base rent, either on a pro rata basis based on your proportion of the building’s lettable area, or as a fixed contribution. The difference between these structures can amount to thousands of dollars per year, and the detail matters.
Watch for broad or undefined outgoings clauses that give the landlord the ability to pass on virtually any building cost. Ask for a defined list of outgoings categories and push for exclusions on capital expenditure items such as structural repairs, roof replacement, or building upgrades that benefit the landlord’s asset rather than your tenancy.
Request a cap on outgoings increases, or at least a requirement that the landlord provide an annual budget at the start of each year and an audited reconciliation at the end. Without this, you have no visibility or control over a cost that can escalate significantly over the lease term.
Land tax is a particularly contentious outgoing. In Western Australia and several other states, land tax is a tax levied on the landlord as the property owner. Whether it can be passed on to the tenant depends on the lease terms. If your lease includes land tax as a recoverable outgoing, understand that this cost can increase substantially if the land is revalued or if the landlord’s aggregated land holdings push them into a higher tax bracket.
Make Good Obligations and the Cost of Leaving
The make good clause defines the condition in which you must return the premises at the end of the lease. It is one of the most commonly underestimated clauses in any commercial lease, and it has the potential to generate a significant unexpected cost when you move out.
Make good obligations typically require you to remove all fixtures, fittings, and signage that you installed during the tenancy, repair any damage caused by the removal, return the premises to a specified condition, which may range from “reasonable condition” to “base building shell,” and in some cases, remove your entire fit-out including partitions, floor coverings, and ceiling modifications.
The cost of make good can be substantial. Stripping a fully fitted-out office back to base building condition can cost tens of thousands of dollars, depending on the size and complexity of the fit-out. If you have not budgeted for this expense, it can come as a painful shock at the end of your tenancy.
Negotiate the make good clause before you sign. Consider seeking a fixed dollar amount in lieu of physical reinstatement, which gives both parties certainty. Alternatively, negotiate to leave the fit-out in place if it is likely to be usable by the next tenant. Ensure the required standard is clearly defined, as vague terms like “original condition” invite dispute.
Critically, prepare a detailed condition report at the start of the lease, with photographs and descriptions of the premises in their pre-tenancy state. This report becomes the benchmark against which your make good obligations are assessed. Without it, disputes about what constituted the “original condition” are almost inevitable.
Assignment and Subletting Rights
Assignment is the transfer of your lease to a new tenant. Subletting is where you remain the tenant under the head lease but grant a sublease of all or part of the premises to another party. Both provisions are important for business flexibility.
If your business circumstances change, whether through growth, downsizing, a sale of the business, or financial difficulty, the ability to assign or sublet your lease can be the difference between a manageable transition and a costly one. Without these rights, you may be locked into paying rent on premises you no longer need or want, with no practical way out.
Most commercial leases require the landlord’s consent before an assignment or sublease can proceed. This is reasonable, but the key is to ensure that the landlord’s consent “cannot be unreasonably withheld.” Without this qualification, the landlord has an effective veto over your exit, which significantly reduces the value of your lease.
Also watch for clauses that impose ongoing liability on the outgoing tenant after an assignment. Some leases require the original tenant to guarantee the assignee’s performance for the remainder of the lease term. This defeats much of the purpose of assignment. Negotiate to have your liability released on assignment, or at least capped and time-limited.
Permitted Use and Exclusivity
The permitted use clause defines what activities you are allowed to conduct from the premises. It needs to be broad enough to accommodate your current operations and any reasonable evolution of your business over the lease term.
A permitted use clause that is too narrow can restrict your ability to adapt. For example, if your lease specifies “retail sale of women’s clothing” and you want to expand into accessories or menswear, you may need the landlord’s consent to change the permitted use, which may come with conditions or additional rent.
Negotiate for a permitted use clause that describes your activities in broad, flexible terms. “Retail sale of clothing and related accessories” is better than “retail sale of women’s dresses.” “Office and consulting services” is better than “accounting services.”
If you are in a multi-tenancy building or shopping centre, consider whether an exclusivity clause is appropriate. An exclusivity clause prevents the landlord from leasing other premises in the same building or centre to a competing business. This is more common in retail leasing than in office or industrial leasing, but it is worth raising if competition from a co-tenant could materially affect your business.
Personal Guarantees and Security
Landlords commonly require the directors of a tenant company to provide personal guarantees for the lease obligations. This means that if the company defaults on the rent or other lease obligations, the guarantor is personally liable for the shortfall.
Personal guarantees are a significant personal risk. If your business fails or is unable to meet its lease obligations, the landlord can pursue you personally for the outstanding rent, make good costs, and other amounts owing under the lease.
Where possible, negotiate to limit the scope of the personal guarantee. Options include capping the guarantee at a fixed dollar amount rather than the entire remaining lease liability, limiting the guarantee to a specified period such as the first two years of the lease, requiring the guarantee to fall away once the tenant has demonstrated a track record of reliable payment, and ensuring the guarantee is released on a valid assignment of the lease.
If you are unable to avoid a personal guarantee entirely, at least ensure you understand the full extent of your exposure and factor it into your risk assessment for the tenancy.
Break Clauses and Early Termination
A break clause gives the tenant the right to terminate the lease before the end of the term, usually subject to specified conditions such as a minimum notice period and a break fee. Break clauses are not standard in Australian commercial leases, but they can be negotiated, particularly in longer-term agreements or in situations where the tenant is taking a risk on an unproven location.
If you are committing to a five-year or longer lease, a break clause at the midpoint provides a safety valve if the premises do not work out. The break fee is typically equivalent to three to six months’ rent, which is a significant cost but far less than paying rent for the remaining term of an unwanted lease.
Even if the landlord is reluctant to include a break clause, it is worth raising in negotiations. You may find that the landlord will agree to one in exchange for a slightly higher rent or a longer notice period. The cost of the concession may be well worth the flexibility it provides.
If you are based in Mandurah or the surrounding area and looking for a property lawyer Mandurah locals trust, having professional guidance through the lease negotiation process ensures your interests are properly protected before you commit.
Insurance Obligations
Commercial leases impose specific insurance obligations on tenants. At a minimum, you will typically be required to hold public liability insurance, contents and stock insurance, plate glass insurance if the premises have a shopfront, and workers’ compensation insurance if you have employees.
The lease will usually specify minimum coverage amounts and may require you to provide certificates of currency to the landlord on an annual basis. Failing to maintain the required insurance can constitute a breach of the lease and may expose you to personal liability in the event of an incident.
Review the insurance requirements carefully before signing. Some leases impose unnecessarily high coverage requirements that increase your premium costs. Others include blanket indemnities that shift liability to the tenant for events beyond their control. Where the insurance requirements seem disproportionate, negotiate for more reasonable terms.
Dispute Resolution Provisions
Disagreements between landlords and tenants do arise, and how they are resolved can significantly affect the cost and outcome for both parties. A well-drafted dispute resolution clause provides a structured process that avoids the expense and delay of litigation wherever possible.
Look for clauses that require the parties to first attempt to resolve disputes through direct negotiation, followed by mediation if negotiation is unsuccessful. Only if mediation fails should the parties resort to arbitration or court proceedings. This tiered approach encourages resolution at the earliest and least expensive stage.
Be cautious of clauses that give the landlord unilateral decision-making power on matters that should be subject to independent determination, such as the amount of outgoings, the market rent at review, or whether a proposed assignment is reasonable.

Practical Steps Before Signing Any Commercial Lease
Before you commit your signature, work through these practical steps to protect your position.
Read every clause of the lease, including the schedules and annexures. Do not assume that any part of the document is “standard” or unimportant. The clauses that cause the most problems are often the ones that seemed routine at first glance.
Obtain a professional lease review from a qualified property lawyer before you sign. The cost of a lease review is a fraction of the cost of dealing with an unfavourable clause over a five or ten-year term. This is one area where professional advice is not optional.
Prepare a condition report with dated photographs of the premises before you take possession. This protects you against unfair make good claims at the end of the lease.
Understand your total occupancy cost, not just the base rent. Add outgoings, insurance, make good provisions, fit-out amortisation, and any other costs specified in the lease. This is the real cost of occupying the space, and it is the number you should use for budgeting and comparison purposes.
Negotiate from a position of information. Research comparable rents, vacancy rates, and lease terms in your area before you enter negotiations. The more you understand the market, the more effectively you can negotiate.
Set calendar reminders for every critical date in the lease: option exercise deadlines, rent review dates, insurance renewal dates, and lease expiry. Missing a deadline can have serious and irreversible consequences.
Frequently Asked Questions
What is the most important clause to negotiate in a commercial lease?
While every clause matters, the rent review clause typically has the greatest long-term financial impact. It determines how your rent changes over the life of the lease and can result in costs that are significantly higher or lower than the initial rent depending on the review mechanism. Fixed percentage increases, CPI adjustments, and market reviews each carry different risks and benefits. Understanding which mechanism is in your lease and negotiating appropriate caps, floors, or review processes is essential to protecting your financial position over the term.
Can I negotiate a commercial lease or is it a take-it-or-leave-it document?
Commercial leases are negotiable. While the landlord will present a draft lease that favours their position, virtually every clause can be discussed, amended, or removed through negotiation. The extent to which a landlord is willing to negotiate depends on market conditions, the desirability of the property, the length of your proposed term, and the strength of your covenant as a tenant. In a market with higher vacancy rates, tenants generally have more leverage. Even in a tight market, reasonable amendments to unfair or disproportionate clauses are usually achievable.
What are outgoings and how can I control them?
Outgoings are the operating costs of the building that are passed through to tenants. They can include council rates, water rates, land tax, building insurance, maintenance, cleaning, and management fees. To control your exposure, negotiate for a defined list of recoverable outgoings rather than an open-ended clause, seek caps on annual outgoing increases, request exclusions for capital expenditure and items that benefit the landlord’s asset, and require the landlord to provide an annual budget and audited reconciliation of actual costs.
What happens if I need to exit my commercial lease early?
Exiting a commercial lease before the end of the term can be complex and costly. Your options depend on the specific terms of your lease. If you have a break clause, you can terminate by paying the agreed break fee and providing the required notice. If not, you may be able to negotiate a surrender with the landlord, assign the lease to a new tenant, or sublet the premises. Without any of these options, leaving early constitutes a breach of the lease, which can expose you to liability for the remaining rent, make good costs, and damages. Negotiating exit flexibility before you sign is far easier than trying to negotiate it when you need to leave.
Do I need a lawyer to review my commercial lease before signing?
It is strongly recommended. A commercial lease is a complex legal document that allocates significant financial and operational risk between the parties. Clauses relating to rent reviews, outgoings, make good, assignment, personal guarantees, and dispute resolution all carry potential consequences that may not be immediately apparent to a non-specialist. A qualified property lawyer can identify unfavourable terms, explain their practical implications, and negotiate amendments that protect your interests. The cost of a professional review is typically modest compared to the cost of living with an unfavourable clause for the duration of the lease.
This guide is intended for general informational purposes only and does not constitute legal advice. Tenants entering into commercial leases in Australia should seek independent professional legal advice specific to their individual circumstances before signing any lease agreement.