Contract clause

Option to purchase clause: sample, option fee and exercise

An option to purchase clause gives one party, the grantee, the right but not the obligation to buy property from the owner, the grantor, at an agreed price within an option period. The grantee usually pays an option fee for the right and exercises it by written notice, which creates a binding contract of sale.

An option to purchase locks in a price and a window: the owner promises to sell, and the buyer pays an option fee for the right to decide later. It suits buyers who need time for finance, approvals or due diligence, and owners who want a committed party without signing a contract of sale today.

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Sample clause

Written for option over a rural lot in Queensland, Lot 14 on RP 88213, granted by fictional owners to a fictional grazing business planning to buy after a season.

Grant and Exercise of Option. (a) In return for the Option Fee of $15,000, the Grantor grants the Grantee an option to buy the Land for the Price of $1,180,000 on the terms of the Contract in Annexure A. (b) The Grantee may exercise the option only by giving the Grantor written notice, signed by the Grantee, with the signed Contract, at any time before 5.00 pm on 30 June 2028. (c) On exercise, the Contract becomes binding, and the Option Fee is credited towards the deposit payable under it. (d) If the option is not exercised by that time, it lapses, the Grantor keeps the Option Fee, and the Grantee must withdraw any caveat it has lodged within 5 business days. (e) During the Option Period the Grantor must not sell, lease or grant any other interest in the Land, and must keep it in its present condition, fair wear excepted.

Sample wording, not legal advice.

Variants

Call option for a buyer

The usual form: the buyer may choose to buy, and the seller must sell if the buyer exercises.

The Grantor grants the Grantee the right to require the Grantor to sell the Land to the Grantee at the Price by notice given within the Option Period.

Put and call option

Off the plan and development deals where both sides want certainty, but a contract cannot be signed yet.

The Grantor grants the Buyer a call option exercisable during the Call Period, and the Buyer grants the Grantor a put option exercisable during the Put Period, each requiring the other to enter the Contract at the Price.

Option in a lease

A tenant who wants the right to buy the leased premises during or at the end of the lease.

Provided the Tenant is not in breach, the Tenant may buy the Premises for $640,000 by written notice given at least 3 months before the end of the Term.

What to negotiate

The risk of leaving it out

Without a written option, a buyer who has spent money on approvals and due diligence has no right to buy if the owner changes their mind or receives a better offer. A loosely written option, on the other hand, can leave an owner unable to sell for years, unsure whether it was exercised, and arguing about the fee.

Option, contract and the cooling off question

An option is not yet a sale: it is a promise to sell if the grantee chooses. The contract of sale is usually attached and becomes binding on exercise. In some states, exercising an option can affect cooling off rights and the timing of disclosure for residential property, so the state's conveyancing rules and the attached contract need to be checked together. Law checked on 21 October 2026. This page explains how the law works and is not legal advice.

Caveats and the title

In Queensland the grantee can protect the option by lodging a caveat with Titles Queensland, which records the claim on the title and stops other dealings being registered without notice to the caveator. Other states have similar systems. A caveat lodged without a proper interest can expose the caveator to compensation, so the option document should support it, and the caveat should be withdrawn promptly if the option lapses.

Duty and tax on options

State duty can apply to the grant of an option, to its assignment, or to the transfer that follows exercise, and the rules differ between states; Queensland's transfer duty rules are administered by the Queensland Revenue Office. The option fee can also have income tax and GST consequences for the grantor. The option example records price, deposit and GST terms in their own section so each can be checked.

Where the clause sits in a generated document

Option to purchase agreements, leases with a purchase option and development agreements carry this clause. When asking the AI document generator for one, give the fee and its treatment, the price, the option period and deadline, how notice is given, the attached contract terms, caveat rules and the grantor's promises during the period.

Documents that carry this clause

Questions people ask

What is an option to purchase clause?

It gives the grantee the right, but not the obligation, to buy property at an agreed price within a set period. The grantee usually pays an option fee and exercises the option by written notice, which turns an attached contract of sale into a binding sale.

What happens to the option fee if the option lapses?

Usually not. The fee pays the owner for keeping the property off the market, so it is kept if the option lapses. If the option is exercised, the agreement normally credits the fee towards the deposit or the price. The clause should state both outcomes.

How do I exercise an option to purchase?

Exactly as the option requires: usually a signed written notice delivered to the grantor's address before the deadline, sometimes with a signed contract and the deposit. Courts are strict, so a late or wrongly delivered notice may fail to exercise the option.

Can I put a caveat on the property during the option?

Usually yes, because an option to purchase gives the grantee an interest in the land. A caveat warns others of the claim and stops dealings being registered without notice. It must be withdrawn if the option lapses, or the owner may seek compensation.

What is a put and call option?

A pair of options: the buyer has a call option to require the sale, and the seller has a put option to require the purchase, usually in later windows. It locks in a deal for both sides without signing a contract of sale at the start.

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Sources

Written and checked by the OneCraft team. Last checked .