TRW & Co · Real estate and projects
Option to Purchase in Singapore: Exercise, Forfeiture and Disputes
An option to purchase in Singapore holds a property for the buyer for a short period in return for an option fee. If the buyer does not exercise, the fee is usually lost. Once exercised, a binding sale contract exists, and forfeiture of deposits, notices to complete and specific performance determine what happens if either side refuses to complete.
Key pointSince Li Jialin v Wingcrown in 2024, a deposit that was unreasonable when agreed cannot be forfeited at all, even in part, so sellers who take more than the customary 10% need recorded special circumstances.
At a glance
Two contracts, one document
The option is an irrevocable offer held open for a fee; exercise creates a separate, binding sale contract with its own deposit and completion terms.
Private resale conventions
A 1% option fee and exercise within about 14 days with a further 4% are market conventions, not legal requirements, and can be negotiated.
Stamp duty runs from exercise
An accepted option is a chargeable instrument, and IRAS requires buyer's stamp duty to be paid within 14 days of execution.
Deposits must be reasonable
The Court of Appeal held in 2024 that reasonableness is judged at contracting, with 10% treated as customary for sales of land.
Notice to complete
Under the Law Society's 2012 Conditions of Sale, a notice to complete requires completion within 21 days after service, after which default remedies apply.
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The short answer: what an option to purchase in Singapore does
An option to purchase in Singapore is a contract in which the seller, in return for an option fee, promises to keep the property off the market for a fixed period and to sell at an agreed price if the buyer exercises the option in time. Until exercise, the buyer is free to walk away and lose only the option fee. Once the buyer exercises, a binding sale contract comes into existence.
For private resale homes, the market convention is an option fee of 1% of the price, with the buyer exercising within about 14 days by signing the acceptance and paying a further 4%. These are conventions, not statutory rules, and they can be negotiated. HDB resale flats and new homes bought from developers follow their own prescribed forms.
Most disputes arise at three points: the buyer fails to exercise properly, the buyer exercises but cannot complete, or the seller refuses to complete. This guide covers each, and the forfeiture rules that decide who keeps the money. For the wider transaction, see our practice pages on conveyancing in Singapore and property acquisition in Singapore.
How the option works: two contracts in one document
Singapore courts treat an option as creating two contracts. The first is the option itself: the seller's irrevocable offer, held open for the option period in exchange for the option fee. The second is the sale contract that arises when the buyer accepts by exercising the option in the manner the document requires.
The Court of Appeal described this structure in Li Jialin v Wingcrown Investment Pte Ltd [2024] SGCA 48, noting that even a single written option contained both an option and, on exercise, a sale and purchase contract governed by the terms of sale. That distinction matters: the option fee belongs to the first contract, while the deposit and completion obligations belong to the second.
Because an option to purchase in Singapore is a unilateral right, it is construed strictly. The buyer must exercise within the period, in the stated manner, and with the stated payment. Late, conditional or incomplete exercise generally fails, and the seller is then free to retain the option fee and sell elsewhere.
The terms of sale
Private residential options almost always incorporate the Law Society of Singapore's Conditions of Sale, which supply standard terms on title, requisitions, completion and default. The edition matters, because the conditions are updated from time to time and the option will say which edition applies. The 2012 edition was the one considered in Li Jialin; later options commonly refer to the 2020 edition.
Key timelines and payments compared
| Feature | Private resale property | New home from a developer | HDB resale flat |
|---|---|---|---|
| Form | Negotiated option, usually on a standard template | Option in the form prescribed under the Housing Developers Rules | HDB's own prescribed option form |
| Option fee | Commonly 1% of the price (convention) | Booking fee fixed by the prescribed form | Set within limits in HDB's rules |
| Exercise | Commonly within 14 days with a further 4% (convention) | Within the period stated in the prescribed form | Within the period set by HDB's rules |
| Terms of sale | Law Society Conditions of Sale, as incorporated | Prescribed sale and purchase agreement | HDB's resale terms and conditions |
| Default regime | Notice to complete under the Conditions of Sale | Termination and forfeiture under the prescribed agreement | HDB procedures and the option terms |
Always check the current rules on the HDB option to purchase page before relying on any HDB figure, because HDB adjusts its process from time to time. For developer sales, the prescribed forms leave little room for negotiation, which is why disputes there tend to centre on termination and forfeiture rather than on the option itself.
Commercial and industrial property
Options over offices, shops and industrial units follow the same legal structure, but the commercial terms are more often negotiated. Option periods may be longer to allow for due diligence, board approvals or financing, and the parties may add conditions on matters such as existing tenancies, approved use or the remaining lease term. Goods and services tax may also be relevant where the seller is GST-registered.
For an option to purchase in Singapore over commercial property, check whether the price is stated as inclusive or exclusive of GST, whether existing tenancies will be transferred, and whether any consent from a head lessor such as JTC is required before completion. These points are far easier to resolve before the option is signed than after it is exercised.
Exercising the option: a step-by-step process
For a buyer, the option period is the time to do the real work. A well-run option to purchase in Singapore follows a sequence like this.
- Check title before paying the option fee. Run a title search through the Singapore Land Authority to confirm the registered owner, any mortgage and any caveats. Make sure the person signing is entitled to sell.
- Secure financing. Obtain an approval in principle before the option is granted and a formal letter of offer before exercise. If financing falls through after exercise, you are still bound to complete.
- Instruct conveyancing lawyers. Your lawyers review the option, the incorporated conditions, any special conditions and the title, and raise requisitions with the relevant authorities.
- Confirm stamp duty and eligibility. Work out buyer's stamp duty and any additional buyer's stamp duty, and check foreign ownership restrictions if relevant, before you are committed.
- Exercise strictly in time. Sign the acceptance and deliver it with the exercise fee in exactly the manner the option requires, before the deadline. Keep proof of delivery.
- Pay stamp duty within the deadline. An accepted option is a chargeable instrument, and IRAS states that buyer's stamp duty must be paid within 14 days of execution, in practice from exercise.
- Protect your interest. Your lawyers may lodge a caveat to give notice of your interest on the land register until completion.
- Complete. Pay the balance, receive the transfer and vacant possession, and register the transfer.
Foreign buyers and companies should read our guides on foreigners buying property under the Residential Property Act and ABSD for companies, trusts and developers before granting or exercising any option, because eligibility and duty can change the economics of the deal entirely.
Forfeiture: option fees, deposits and the reasonableness test
If the buyer does not exercise an option to purchase in Singapore, the option simply lapses and the seller keeps the option fee. That is the price of the seller holding the property off the market, and challenges to its retention rarely succeed where the fee is in line with convention.
After exercise, the position is different. The sum paid on exercise usually becomes part of a deposit under the sale contract. If the buyer then fails to complete, the seller's right to forfeit depends on the contract and on the law of deposits.
What Li Jialin decided
In Li Jialin, a developer had purported to forfeit a deposit worth about 63% of the price, later reducing its claim to 20%. The Court of Appeal held that the reasonableness of a deposit must be assessed at the time of contracting, not at the time of forfeiture. If the sum was unreasonable when agreed, it is not a true deposit and cannot be forfeited at all; a seller cannot rescue it by choosing to forfeit only part.
The court recognised that a deposit of 10% has long been treated as customary in sales of land, and that a seller seeking to justify a higher figure must show special circumstances. The seller's remedy is then to prove its actual loss as damages. The decision connects closely with the penalty rule discussed in our guide to liquidated damages and the penalty rule.
Sellers who ask for an unusually large deposit, or who roll previous payments into a new deposit when re-granting an option to a defaulting buyer, should document the commercial reason at the time. Without special circumstances, an unreasonable deposit may be unrecoverable as a forfeiture, leaving the seller to prove its loss.
Remedies when a party refuses to complete
When the buyer defaults
Under the Law Society's Conditions of Sale, a party ready to complete can serve a notice to complete once the completion date passes. In the 2012 edition considered in Li Jialin, the parties must then complete within 21 days after service. If the buyer does not comply, the seller may terminate, forfeit the deposit if it is a true deposit, resell, and pursue the other remedies the conditions provide.
When the seller defaults
A seller who refuses to complete an exercised option to purchase in Singapore, perhaps because a better offer has arrived, is in breach. Because each property is treated as unique, a buyer can usually seek specific performance, an order compelling the seller to complete, as well as or instead of damages. Serving a notice to complete and lodging a caveat are common first steps.
Speed matters. A buyer who delays, or who acts inconsistently with wanting the property, may weaken a claim for specific performance. Where there is a risk of the seller transferring to a third party, urgent relief may be needed; our page on injunctions and urgent relief explains how that works. Disputes that cannot be settled are handled under our real estate disputes practice.
Illustrative scenario: a seller receives a higher offer
This scenario is illustrative only and does not describe any real transaction.
A seller grants an option on a condominium unit for a 1% option fee with a 14-day exercise period. On day ten, another party offers a materially higher price. The seller's agent suggests the seller simply refund the option fee and cancel.
The seller has no right to do so. The option is an irrevocable offer for its stated period, and the buyer exercises on day twelve in the prescribed manner, paying the exercise fee to the seller's lawyers. A binding sale contract now exists. The buyer's lawyers lodge a caveat, pay stamp duty within the statutory window and, when the seller signals it will not complete, serve a notice to complete and prepare proceedings for specific performance.
Faced with that, the seller completes on the original terms. Had the seller instead sold to the second party, it would have faced a claim for damages and possible proceedings to unwind the transfer, together with costs. The lesson for sellers is that the option period is a commitment, not a cooling-off window.
Risks and common mistakes
Exercising late or in the wrong manner
Options are construed strictly. Exercise after the deadline, by the wrong method, to the wrong address, or without the full exercise fee can fail. Weekends and public holidays are usually counted in the option period.
Buyers should diarise the deadline with a margin, confirm the delivery method in advance and keep proof of delivery. If more time is needed, agree a written extension signed by the seller before the original deadline expires.
Exercising before finance is confirmed
Once the option is exercised, the buyer is bound to complete. A loan that is reduced or refused afterwards does not release the buyer, who may then lose the deposit and face a claim for the seller's loss.
If financing is uncertain, negotiate a longer option period or a special condition before signing. Do not assume the seller will agree to vary the deal once it is binding.
Underestimating stamp duty
Stamp duty on an accepted option is due within a short statutory window, and additional buyer's stamp duty can be substantial for second properties, foreigners and entities. Late payment attracts penalties.
Model the full duty cost before exercise. Our stamp duty practice page explains the main heads of duty and the reliefs and remissions that may apply.
Sellers granting a second option
A seller who grants a second option over the same property during the first option period exposes itself to claims from the first buyer. Agents and sellers sometimes misread a pending option as non-binding.
Sellers should treat the option period as exclusive and decline further offers in writing until the option lapses or is exercised. If in doubt, take advice before responding to a competing bid.
Cross-border buyers and sellers
Overseas buyers and sellers often sign options remotely, sometimes through an agent or under a power of attorney. The person signing must have authority, and any power of attorney may need to be in a form acceptable for registration. Time differences make strict exercise deadlines easier to miss, so remote buyers should allow extra time.
Funds flowing from abroad should be arranged before exercise, as banking and compliance checks can delay transfers. Property agents in Singapore are regulated by the Council for Estate Agencies, but agents do not give legal advice; the option itself should be reviewed by lawyers. TRW & Co can coordinate across its offices for clients in Bangladesh, the UK, the UAE and China. Where Singapore court or tribunal representation is required, we work alongside Singapore-qualified counsel.
Checklist before you sign or exercise
- Confirm the registered owner and encumbrances through a title search.
- Agree the option fee, exercise fee, option period and completion date in writing.
- Check which edition of the Conditions of Sale is incorporated.
- Secure financing before exercise, not after.
- Model buyer's stamp duty and any additional buyer's stamp duty.
- Diarise the exercise deadline and confirm the delivery method.
- Keep deposits within customary levels unless special circumstances are recorded.
- Act quickly if the other side signals it will not complete.
Every option to purchase in Singapore is short, but it decides who bears the risk if the deal fails. If you are about to grant or exercise one, or a counterparty is refusing to complete, contact TRW & Co for advice on the documents, the deadlines and your remedies.
Frequently asked questions
01Can I get my option fee back if I decide not to buy?
Usually not. The option fee is what the buyer pays for the seller's promise to keep the property available at the agreed price during the option period. If the buyer does not exercise, the option lapses and the seller keeps the fee, unless the option itself provides otherwise, for example through a special condition on financing or approvals. Negotiate any such condition before signing, because it cannot be implied later simply because the purchase became inconvenient.
02How long do I have to exercise an option to purchase in Singapore?
It depends on the option. For private resale properties, about 14 days is a common convention, but the period is whatever the parties agree in writing. HDB resale flats and new homes from developers follow prescribed forms with their own periods. Weekends and public holidays usually count. Exercise must be made strictly within the period and in the stated manner, so check the exact deadline and delivery method with your lawyers.
03What happens if the seller refuses to complete after I exercise the option?
Once exercised, the option becomes a binding sale contract, and a seller who refuses to complete is in breach. The buyer can usually seek specific performance, an order compelling completion, and damages. Common first steps are lodging a caveat to protect the buyer's interest and serving a notice to complete under the incorporated Conditions of Sale. Act quickly, because delay can weaken a claim for specific performance.
04Can a seller forfeit my whole deposit if I fail to complete?
A seller can forfeit a true deposit if the contract allows it and the buyer fails to complete after a valid notice to complete. In Li Jialin v Wingcrown, the Court of Appeal held that a deposit must be reasonable when agreed, with 10% treated as customary in land sales. A higher sum needs special circumstances. If the deposit was unreasonable, it cannot be forfeited at all, and the seller must prove its actual loss as damages instead.
05When is stamp duty payable on an option to purchase?
Stamp duty is payable on the instrument that creates the binding sale, and IRAS identifies acceptance of an option to purchase as such an instrument. Buyer's stamp duty, and any additional buyer's stamp duty, must be paid within 14 days of execution, which in practice runs from exercise. Late payment attracts penalties. Sellers may also face seller's stamp duty if they sell within the holding period, so both sides should check before signing.
06Can a seller grant an option to a second buyer during the option period?
A seller who has granted an option has promised not to sell to anyone else during the option period. Granting a second option or selling to a third party in that window exposes the seller to claims from the first buyer, including damages and, where the first buyer exercises in time, proceedings for specific performance. Sellers who receive a higher offer should take advice before responding.
Sources and official materials
- Li Jialin v Wingcrown Investment Pte Ltd [2024] SGCA 48 — Court of Appeal on options, deposits, forfeiture and the Conditions of Sale
- IRAS: Buyer's Stamp Duty — Chargeable instruments, including acceptance of an option, and payment deadlines
- HDB: Option to Purchase — HDB's process and rules for resale flat options
- Singapore Land Authority — Land titles register, title searches and caveats
- Council for Estate Agencies — Regulation of property agents and transaction guides
General information only, current as at 20 October 2026. It is not legal advice and does not create a lawyer–client relationship. Singapore law and regulatory practice change; check current official sources and take advice on the facts of your matter.
