Lease Extension Agreements: Essential Guide For Australian Businesses

Leasing a shopfront, office or warehouse is often central to running your business in Australia. When your fixed term is coming to an end, moving premises isn’t always practical - you’ve built local brand recognition, invested in a fit‑out and trained your team around the site.

A lease extension agreement can help you stay in place with confidence. The key is to approach it strategically, understand your legal position and lock in terms that support your business goals.

In this guide, we explain what a lease extension agreement is, how it differs from a renewal, the steps to follow, common legal issues to watch for and the documents you’ll likely need - so you can focus on running your business while staying compliant.

What Is A Lease Extension Agreement?

A lease extension agreement is a written contract where you and your landlord agree to continue your existing commercial lease for a further period beyond its current end date. In most cases, the extension keeps the original lease in place and updates specific items (like the new end date, rent and any varied clauses).

Extending your lease can provide stability for cash flow and staffing, preserve customer access, and avoid the cost and downtime of relocating. It also gives you a chance to negotiate terms that reflect how your business has evolved.

Depending on your situation, the extension might be a short addendum that references the original lease, or a more detailed document that varies several terms. Either way, it should be signed by all required parties (including any guarantors) and stored with your original lease.

Lease Extension Vs Lease Renewal: What’s The Difference?

The terms “extension” and “renewal” are often used interchangeably in day‑to‑day conversations, but they can have different legal effects - and it’s worth getting this right before you sign anything.

• Lease extension: The current lease continues for a longer period. The original rights, obligations and security (for example, bank guarantees) generally remain in place unless the parties change them in writing. The document typically amends the term and any specific clauses you both agree to update.
• Lease renewal: A new lease is granted for the further term. Even if the terms are very similar, a renewal usually creates a fresh agreement. That can have flow‑on effects - for example, new disclosure requirements in some retail leasing contexts, fresh execution by guarantors, and possible registration updates if the lease is registrable.

Many commercial leases include an option to renew. Exercising an option usually grants a new term on specified conditions (including any stated rent review method and critical notice dates). If your premises is a “retail shop” under state or territory laws, additional rules can apply around timing, disclosure and rent review mechanics. In New South Wales, for example, retail tenants and landlords must comply with the framework under the Retail Leases Act 1994 (NSW), and you can read more in our overview of the Retail Leases Act NSW.

The bottom line: confirm whether you’re extending the existing lease or entering a new lease on renewal. The distinction affects what needs to be documented, who must sign, whether disclosure is required in retail settings and how security and guarantees are treated.

How Does The Lease Extension Process Work?

Whether you’re exercising an option or negotiating an extension by agreement, a proactive, documented process will put you in the strongest position.

1) Review Your Current Lease And Key Dates

Start by reading your lease cover‑to‑cover. Note the expiry date, any option periods, notice windows, market review clauses, make‑good obligations, and how outgoings and repairs are handled.

If there’s an option, diarise the deadline to exercise it (for example, 3 or 6 months before expiry). Missing this date can mean losing the right to continue on the option terms.

2) Open Discussions Early

It’s sensible to approach your landlord 4–6 months before the lease ends (earlier for larger fit‑outs or complex negotiations). Early engagement signals you’re organised and gives both sides time to consider alternatives if needed.

3) Send A Clear, Written Notice

Put your intention to continue in writing. If you’re exercising an option, comply with the exact notice requirements in the lease (method of delivery, timeframe and content). If you’re proposing an extension by agreement, send a concise letter or email outlining your request and any headline terms you’d like to vary (such as term length, rent review method or responsibilities for repairs).

4) Negotiate Commercial Terms

Common points to discuss include the length of the further term, rent and the review mechanism (market, fixed percentage or CPI), options for further terms, outgoings, repair and maintenance, trading hours (for retail), signage and any fit‑out upgrades. Back your rent proposals with market data where possible.

5) Document The Agreement Properly

Once the commercial terms are agreed, document them in a formal instrument. If the plan is to keep your existing lease and extend it, this is usually done with an Extension of Lease (and, if needed, a variation of specific clauses). If the intention is to start a new term, your lawyer will prepare a renewal deed or new lease on the agreed terms.

Given the value at stake, it’s wise to have a commercial lease lawyer review the draft before you sign. They’ll check that the document matches what was negotiated, aligns with any retail leasing requirements that apply, and doesn’t create unexpected risk.

What Should A Lease Extension Agreement Include?

Clarity now prevents disputes later. A well‑drafted extension agreement typically covers:

• Further term and expiry date: The exact start and end dates for the extended period, and whether there’s any “holding over” allowed after the new expiry.
• Rent and rent review: The starting rent for the further term, the review method and timing (for example, annual 3% increase or CPI), and how any market review will be conducted.
• Outgoings and operating costs: Which outgoings you pay, how they’re calculated and when statements are provided (particularly important for multi‑tenant sites).
• Repairs, maintenance and make‑good: Who is responsible for what during the term, and whether any existing make‑good obligation is deferred until the end of the extended term.
• Options for further terms: Whether you’ll have another option after this term, including the notice period to exercise it.
• Security and guarantees: Whether existing bank guarantees or bonds continue, and if guarantors must re‑execute or provide updated guarantees.
• Any other variations: Changes to permitted use, trading hours, signage, car parks, storage areas or subletting/assignment rights.
• Formal execution: Signature blocks for all parties (including guarantors). If several clauses are being changed, a Deed of Variation is often used to record those amendments alongside the extension.

If your original lease was registered (common for longer terms), your lawyer can also advise whether the extension or variation should be noted or registered with the relevant land titles office.

Common Legal Issues To Watch Before You Sign

Even a straightforward extension can have hidden traps. Keep an eye on these areas and get advice early if anything is unclear.

Option Windows And Method Of Notice

Options to renew are strictly interpreted. If your lease requires written notice by a certain date and in a particular way (for example, delivered to a registered address), follow it to the letter. Missing the deadline often means the right lapses.

Retail Leasing Rules (If They Apply)

If your premises is a “retail shop” under your state or territory law, there are additional rules around disclosure timing, rent review clauses and some costs. These obligations differ between jurisdictions, so always check the rules for your location. Our outline of the Retail Leases Act NSW highlights key concepts - similar frameworks exist in other states and territories.

Rent Review Mechanics And Market Data

Market rent reviews can be contentious. Agree on the review method and process now, including how valuers are appointed and who pays, to minimise disputes later. If you agree a fixed increase, be clear about the percentage or index and the review dates.

Guarantors, Security And Insurance

Confirm whether existing guarantees and bank guarantees continue unchanged into the further term. If guarantors are changing (for example, a director has left), ensure the extension or renewal correctly records new guarantors and that the landlord releases the former guarantor where appropriate. Check your insurance obligations and update certificates of currency if required by the lease.

Fit‑Out, Repairs And Make‑Good

Make‑good clauses can be expensive if misunderstood. If you intend to continue in occupation, ensure that any make‑good obligation is deferred until the end of the extended term and that responsibility for capital works and base‑building repairs remains with the landlord unless otherwise agreed.

Assignment, Subleasing Or Corporate Restructures

If there’s a chance you’ll transfer the lease during the next term (for example, selling the business or moving it to a new entity), check the assignment and consent clauses now. Where a transfer is contemplated, you’ll typically need a Deed of Assignment of Lease and the landlord’s written consent.

Registration And Mortgagor Consent

In many jurisdictions, long‑term leases are commonly registered. If your lease is registered on title, an extension or variation may need to be lodged so third parties can see your continuing interest. If your landlord’s property is mortgaged, their lender may also need to consent to the extension or renewal.

Documenting Any Waivers Or Settlements

If the parties agree to waive an existing requirement (for example, a historical breach or a disputed repair item), record it in writing - a short Waiver or a clause in the extension agreement can avoid future arguments. Where several issues are being adjusted, a comprehensive Deed of Variation can bundle them into one clear document.

If you’re unsure how these apply to your lease, it’s worth getting a quick check from our team via a lease review and amendment advice before you lock anything in.

Alternatives To Extending Your Lease (And When They Make Sense)

Extending is not your only option. Depending on your plans, one of these pathways might be a better fit.

• New lease (renewal): If you want a clean slate or your option terms are unattractive, negotiating a new lease can reset core terms like rent review, outgoings and options for further terms.
• Short extension or holding over: If you need flexibility (for example, you’re testing a second site), a short extension can buy time. Some leases allow “holding over” month‑to‑month with both sides able to end on notice. Confirm the holding‑over rent and termination notice period in writing.
• Subleasing part of the premises: If you have surplus space, a sublease (subject to landlord consent) might help with occupancy costs while retaining your location.
• Assigning the lease with a business sale: If you’re exiting the site, planning an assignment with your business sale can transfer obligations to the buyer. You’ll usually need a formal deed and landlord consent.

The right option depends on your growth plans, cash flow and the market. If you’re weighing up a move, a quick chat with a commercial lease lawyer can help you understand the legal and commercial trade‑offs before you decide.

What Legal Documents Might You Need?

Here are the documents most businesses use when continuing in the same premises. Not all will apply to every situation, but they’re common in lease extension or renewal scenarios:

• Extension of Lease: Formally extends the term of the existing lease and sets the new expiry date and rent. See our Extension of Lease service.
• Deed of Variation: Records agreed changes to specific clauses (for example, outgoings, permitted use or rent review). Useful where there are several updates to the existing lease. A template can be tailored as a Deed of Variation.
• New Lease (on renewal): If the parties prefer a fresh agreement for the further term, a new lease is prepared and signed.
• Deed of Assignment of Lease: Transfers the lease to a buyer or related entity, usually with landlord consent, during or at the end of a term. See Deed of Assignment of Lease.
• Waiver or Release: If the parties agree to waive or settle a historic issue (for example, a disputed repair), a short Waiver or release clause avoids future disagreements.
• Disclosure (retail only): In some jurisdictions, retail leasing laws require disclosure around renewals or options. Your lawyer can advise on what is required for your location and prepare the necessary documents.

If you’re unsure which route fits your situation, our team can scope your needs and prepare the right mix of documents, then coordinate signing and any registration steps that follow.

Key Takeaways

• A lease extension agreement lets you continue your existing lease for a further period, while a renewal typically creates a new lease - clarify which approach you’re taking before you negotiate.
• Start early, diarise option windows and put your intention to continue in writing to protect your position and keep negotiations on track.
• Lock in commercial details up front: length of term, rent and review mechanics, outgoings, repairs, make‑good, options and any changes to permitted use or signage.
• Watch for legal trip‑wires: option notice methods, retail leasing disclosure rules (if applicable), guarantor obligations, security, registration and assignment/sublease clauses.
• Document everything properly - often via an Extension of Lease and, where needed, a Deed of Variation - and ensure all parties (including guarantors) sign correctly.
• Getting a quick lease review and amendment advice can save time, reduce risk and help you secure terms that support your business goals.

If you would like a consultation on lease extension agreements for your business, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no‑obligations chat.