What Is an OTP?
Sign an Option to Purchase (OTP) for a S$1.5M resale condo and you commit S$15,000 in non-refundable cash before a single legal document has been reviewed — that is the entire OTP mechanic in one sentence. The OTP is a legal contract in which the seller grants you, the buyer, the exclusive right to purchase the property at an agreed price within a fixed option period. You pay an option fee (as of 2026-07, market convention sets this at 1% of the purchase price) to secure that right. The seller cannot sell to anyone else while your option is live; you are not obligated to proceed until you exercise it.
The mechanics diverge sharply depending on what you are buying. A private resale purchase runs on the OTP-then-exercise structure above. A developer sale (new launch or building-under-construction) runs on a booking-then-Sale & Purchase Agreement structure instead — the fee sizes, deadlines, and paperwork are different enough that using the wrong mental model costs you money or a missed deadline.
| Mechanic | Private resale (OTP) | New launch (developer sale) |
|---|---|---|
| Initial fee | 1% option fee to seller | 5% booking fee to developer |
| Document signed | Option to Purchase | Booking form, then Sale & Purchase Agreement (S&P) |
| Deadline to commit | Option period, 14 days is standard | S&P signed within 3 weeks of booking |
| Cash at full commitment | 5% total (1% option + 4% exercise fee) | 5% booking fee counts toward the first payment; balance follows a progressive payment schedule |
| Stamp duty trigger | BSD/ABSD due within 14 days of exercising the OTP | BSD/ABSD due within 14 days of signing the S&P |
Everything from here treats the resale OTP route as the default case, with new-launch differences flagged where they matter. Use the stamp duty calculator for BSD and ABSD to check your own exposure before you sign anything.
OTP Exercise Timeline
Once the OTP is granted, the clock on the option period starts immediately — not from when your lawyer reviews it. A 14-day option period (the standard convention for resale) means 14 calendar days, weekends and public holidays included, from the date the seller signs and delivers the OTP to you.
Within that window you need to: confirm your financing (an in-principle approval, not just a rate quote), commission or review the valuation report if a bank loan is involved, and have your lawyer check title. Exercising the OTP means signing and returning it together with the exercise fee — conventionally 4% of the purchase price, bringing your total upfront commitment to 5%.
Miss the exercise deadline and the option lapses automatically — there is no grace period and no partial refund. Your 1% option fee is forfeited in full and the seller is free to sell to another buyer. If you need more time, the only fix is negotiating an extension with the seller in writing before the deadline, not after.
Once exercised, ABSD is assessed at your residency status and property count on the exercise date (as of 2026-07) — not the date you signed the OTP and not the completion date. If your residency status is due to change (for example, a pending PR application) inside the option period, that timing decides which ABSD tier applies to you.
Worked example: you are a PR exercising the OTP on a S$1.5M resale condo as your first residential property.
| Line item | Paid to | Amount |
|---|---|---|
| Option fee (1%) | Seller | S$15,000 |
| Exercise fee (4%) | Seller | S$60,000 |
| Subtotal to seller at exercise | — | S$75,000 |
| Buyer's Stamp Duty | IRAS | S$44,600 |
| ABSD — PR, 1st property, 5% (effective 27 Apr 2023) | IRAS | S$75,000 |
| Total stamp duty due within 14 days of exercise | IRAS | S$119,600 |
That S$119,600 stamp duty bill is separate cash on top of the 5% option and exercise money — know your number before you exercise, not after.
Conveyancing Steps Explained
- Engage a lawyer (Day 0–3). Do this before you exercise the OTP, not after — your lawyer should review the OTP terms while the option period is still running.
- Requisitions (Week 1–3). Your lawyer submits searches against the property: land title with the Singapore Land Authority, planning and enforcement status with URA's records on private property transactions, outstanding management fees with the MCST (for a condo), and outstanding bills with the town council or utility boards. Digital requisition processing has shortened turnaround times considerably (as of 2026-07).
- Exercise and stamp (by the option deadline). You exercise the OTP, and your lawyer e-Stamps the document with IRAS's e-Stamping service for BSD and ABSD within 14 days of exercise, paying BSD and any ABSD due.
- Financing drawdown (Week 4–8). Your bank issues the Letter of Offer, your lawyer (or the bank's panel lawyer) prepares the mortgage, and CPF Board's process for using OA on a property purchase handles any CPF withdrawal application if you are drawing on OA funds for the down payment or instalments.
- Requisition replies and clearance (Week 6–10). The seller's lawyer clears outstanding encumbrances — redeeming any existing mortgage, settling MCST arrears — before completion can proceed.
- Completion (Week 8–12). Balance purchase price, remaining CPF and cash, and loan proceeds are disbursed simultaneously; you collect the keys the same day or shortly after.
- Post-completion lodgement. Your lawyer lodges the transfer and mortgage instrument with the Singapore Land Authority to register you as the new owner on record.
Total conveyancing time from OTP exercise to completion runs 8–12 weeks for a resale purchase, longer if the seller has yet to secure a replacement property and negotiates an extended completion date.
Choosing a Conveyancing Lawyer
Most conveyancing firms in Singapore quote a fixed-fee package covering the purchase (and the mortgage, if the same firm also acts for your bank) rather than hourly billing — ask for the all-in figure upfront, including disbursements, not just the headline legal fee. If your bank offers a panel of law firms, using a panel firm often keeps the mortgage-side fee down or waives it, but you can still appoint your own solicitor for the purchase itself.
Confirm your lawyer is a practising solicitor registered with a Singapore law practice — this is a separate credential from your property agent's CEA registration. If you are also using an agent to negotiate the deal, verify their registration status before you rely on their reading of contract terms; agents are not licensed to give legal advice, only lawyers are. Check agent registration via CEA's public register of licensed salespersons.
Ask two questions before engaging a firm: how many requisition replies have historically come back with issues on properties of this type (condo vs landed), and what is their standard timeline commitment from exercise to completion. A lawyer who has handled hundreds of resale condo transactions flags MCST arrears and outstanding renovation permit issues faster than a generalist.
Typical Legal Costs
Legal fees scale loosely with purchase price and loan quantum rather than following a fixed schedule, and the exact figure is set by each firm's fee schedule rather than by statute — treat no single number here as current pricing. What you can rely on is the cost structure: a base conveyancing fee for the purchase, an additional fee if the same firm handles your mortgage, and disbursements (title search fees, registration fees payable to the Singapore Land Authority, and courier and administrative charges).
Beyond the legal fee itself, budget for the full transaction cost stack: BSD, any ABSD, the legal fee and disbursements, and the bank's valuation fee if not waived. For a second property or a PR/foreigner purchase, ABSD dominates the total by a wide margin; for an SC first-timer, BSD plus legal costs is the whole story. Model your specific transaction — purchase price, buyer profile, loan quantum — on the total cost of purchase calculator instead of adding up estimates by hand.
For a deeper breakdown of resale legal costs specifically, including how fixed-fee packages are typically structured, see a dedicated walkthrough of lawyer costs and timelines.
Completion & Key Collection
Completion is the day the balance purchase price, remaining CPF funds, and your bank loan proceeds are disbursed to the seller (via their lawyer) simultaneously, in exchange for the executed transfer document and the keys. Your lawyer typically holds a small retention sum from the sale proceeds — commonly a percentage of the price, held for a fixed period — if any minor outstanding items, such as last utility bills or final MCST reconciliation, are still being finalised.
For a resale purchase, you inherit the unit largely as-is; there is no defects liability window from a developer. For a new-launch purchase, the defects liability period runs from the date of legal completion (Temporary Occupation Permit stage), giving you a fixed window to flag construction defects to the developer at no cost — see how the defect liability period works and what it covers for the claim process and time limits.
On the day itself: confirm the final meter readings, check that any agreed inclusions (built-in wardrobes, air-con units) are present and in the condition stated in the sale agreement, and only sign the handover acknowledgement once you have physically inspected the unit. Key collection typically happens at your lawyer's office or the property itself, coordinated between both sides' solicitors.
Common Legal Pitfalls
Most conveyancing problems are timing problems, not legal ones — the contract terms are standard, but missing a date is expensive and sometimes irreversible.
- Missing the exercise deadline. The single most common and most costly mistake — it forfeits the entire option fee with no recourse.
- Underestimating the 14-day stamp duty window. BSD and ABSD are due within 14 days of exercising the OTP; scrambling for a six-figure cash sum on short notice is avoidable by checking your number before you exercise, not after.
- CPF withdrawal timing. CPF Board processing takes time — submit your withdrawal application as soon as the OTP is exercised, not the week before completion.
- Unresolved MCST arrears. A seller's outstanding management fees or sinking fund contributions must be cleared before completion; confirm your lawyer has this in the requisition checklist.
- Loan disbursement timeline mismatch. If your bank's Letter of Offer and valuation take longer than expected, you risk missing the agreed completion date, which can trigger late-completion interest penalties under the sale agreement.
- Assuming new-launch rules apply to a resale purchase, or vice versa. The fee percentages, deadlines, and stamp duty trigger dates differ between the two routes — confirm which one governs your transaction before you calculate anything.
Timeline Visualisation
The table below consolidates the resale OTP-to-completion timeline stage by stage, with who is responsible and what payment falls due at each point (as of 2026-07).
| Stage | Who | Timeframe | Payment due |
|---|---|---|---|
| OTP granted | Seller to buyer | Day 0 | Option fee, 1% of price |
| Option period | Buyer arranges financing & legal review | Days 1–14 (standard) | None due yet |
| OTP exercised | Buyer to seller | By the 14-day deadline | Exercise fee, 4% of price |
| Stamp duty paid | Buyer to IRAS | Within 14 days of exercise | BSD + any ABSD |
| Requisitions & loan drawdown | Both lawyers, buyer's bank | Weeks 2–8 | None to seller; bank fees may apply |
| Encumbrance clearance | Seller's lawyer | Weeks 6–10 | Seller settles existing mortgage/MCST arrears |
| Completion | Both lawyers | Weeks 8–12 | Balance price, CPF, loan proceeds disbursed |
| Key collection | Buyer | Completion day or shortly after | None |
| Transfer lodgement | Buyer's lawyer | Post-completion | Registration fee (Singapore Land Authority) |
A new-launch purchase compresses the front end (booking to S&P signing in 3 weeks) but stretches the back end across a progressive payment schedule tied to construction milestones rather than a single completion date — treat the table above as the resale-specific default. Check your own financing timeline against the mortgage calculator for loan quantum and instalments, and if you want deeper detail on how e-Stamping and requisitions are increasingly handled online, see how the Digital Conveyancing Portal changes the requisition process.
Frequently Asked Questions
How long is an OTP valid?
Most private resale property OTPs run for 14 days from the date of grant, though the exact period is negotiated between buyer and seller and stated in the option agreement itself, not fixed by law. New-launch developer OTPs run longer, often 3 weeks, to give buyers time to arrange financing before the booking fee converts to the option fee. Check the validity date printed on your specific OTP document rather than assuming the 14-day norm applies, since missing the deadline forfeits your option fee with no recourse.
What happens if I don't exercise the OTP?
If you let the OTP lapse without exercising it, the option simply expires and you have no further obligation to buy — but the seller keeps the option fee you paid to secure it, and the property returns to the open market for other buyers. There's no partial refund or extension right once the stated validity date passes, unless the seller voluntarily agrees to one in writing before expiry. This is why buyers who need more time to arrange financing or complete due diligence should negotiate a longer option period upfront rather than risk forfeiting the fee.
How much are conveyancing fees?
Budget S$2,500 to S$3,500 in legal fees (as of 2026-07) for a straightforward residential conveyancing transaction, covering your lawyer's work on the OTP review, title checks, and completion — this is separate from stamp duty, which is calculated on price, not legal cost. More complex deals, such as a sub-sale, decoupling, or a mortgagee sale, push legal fees higher due to extra documentation and searches. Get a fixed-fee quote from your conveyancing lawyer upfront rather than an hourly estimate, since most residential deals in Singapore are billed as a flat package.