Option Agreements in Australia (2026): Guide for Buyers & Investors

An option agreement is a legally binding contract that gives one party (usually the buyer or developer) the exclusive right—but not the obligation—to purchase a property at a specified price within a set period. These agreements are especially common in real estate, but they’re also used in business acquisitions and other asset deals.

• Call Option: Grants the buyer the right to buy the property.

• Put Option: Grants the seller the right to force the sale of the property to the buyer.

• Options typically require the buyer to pay a non-refundable fee, known as the option fee.

In 2026, option agreements are being used more widely in response to market uncertainty, allowing buyers to lock in prices or secure sites for future development without immediate commitment.

Recent legal developments have changed the way option agreements are structured and enforced in Australia:

• Stamp Duty Rules: Several states, including New South Wales and Victoria, have updated their stamp duty regulations for option agreements. In NSW, for example, the duty may now be assessed on both the option fee and the eventual purchase price if the option is exercised.

• Disclosure Requirements: The 2026 amendments to consumer protection laws mean that sellers must provide clearer disclosures about the property and any associated risks during the option period.

• Foreign Investment Review Board (FIRB): New FIRB guidelines clarify that foreign investors must obtain approval before entering into certain types of option agreements, especially where residential property is involved.

• Tax Implications: The ATO has signalled increased scrutiny of capital gains tax (CGT) events triggered by assignment or lapse of options, so both parties should seek clear advice on the tax outcomes before signing.

With penalties for non-compliance increasing in 2026, it’s critical to get legal advice and ensure your option agreement is watertight.

Option agreements aren’t just for big developers—they’re useful in a variety of situations:

• Developers: Use options to secure land while seeking planning approval, minimising upfront risk. For example, a Melbourne-based developer in 2026 secured an option on a suburban parcel, gaining time to obtain rezoning approvals before committing to a multimillion-dollar purchase.

• Home Buyers: In a rising market, an option agreement can lock in today’s price for a property you plan to buy in six months. This can be a hedge against price increases or interest rate hikes.

• Investors: Assigning or selling an option can be a way to profit from a change in market conditions without ever settling on the property. However, with the ATO’s heightened focus on option assignments in 2026, this strategy now demands more careful tax planning.

One practical tip: clarify what happens if the option lapses or if either party defaults. Clear dispute resolution clauses can save significant costs down the track.

• Due Diligence: The cooling-off period doesn’t apply to most option agreements. Undertake all necessary checks—title searches, zoning, finance—before signing.

  • Option Fee Risks: Option fees are typically non-refundable. Make sure you’re prepared to lose this fee if you decide not to proceed.

  • Complex Clauses: Watch for ‘option to extend’ or ‘automatic exercise’ provisions, which can create unexpected obligations or costs.

  • Legal Review: Given the 2026 regulatory changes, have your agreement reviewed by a property lawyer familiar with current legislation in your state.

Option agreements are a powerful tool for navigating the Australian property market in 2026, offering flexibility and strategic advantage to buyers, sellers, and developers. With updated laws, evolving tax treatment, and increased market volatility, there’s never been a more important time to understand how they work and how to use them effectively. Whether you’re locking in a future purchase or seeking to minimise risk, a well-drafted option agreement can make all the difference.