Why the legal timeline matters more than the price

Most Singapore condo buyers focus on the right things — psf, unit selection, bank loan, cooling measures — but then under-invest in understanding the legal timeline that sits between “I love this unit” and “here are my keys”. Missed deadlines in that window can cost the 1% option money, trigger additional stamp duty, invalidate loan approvals, or leave buyers unable to complete. This guide is the full walk-through: a calendar-day breakdown of what happens, who signs what, and where the common mistakes are.

We cover three transaction types: resale private condo, new launch from developer, and sub-sale (buying a unit whose TOP has not yet occurred from a first buyer who wants to exit). Each follows the same overall arc but has different sub-deadlines.

Stage 1 — Pre-OTP: the due diligence window

Before you sign an Option to Purchase, you have the cheapest leverage in the entire transaction. A buyer who walks away before the OTP loses only viewing time and the occasional lawyer consultation fee. After the OTP, that number jumps to 1% or more. Spend the pre-OTP window on:

• Home loan in-principle approval (IPA). Secure this before signing the OTP. An IPA is typically valid for 30 days and costs nothing.
• Property valuation. Have the bank’s valuation in hand. For a resale flat, if the offer price is above valuation, you must top up the difference in cash.
• Physical inspection. Walk the unit at different times of day, check for water stains, examine the corridors, parking, lift lobbies.
• Legal check — encumbrances. Your lawyer should run a pre-OTP title search to confirm no caveats, mortgages, or writs that haven’t been discharged.
• MCST search. Confirm no active arrears on the property, no pending special assessments, no upcoming major works (which could mean sinking-fund levies).

Stage 2 — Option to Purchase (OTP)

The OTP is a unilateral contract: you pay the seller 1% of the purchase price (the “Option Fee”) and, in return, the seller gives you an exclusive right (an “option”) to buy the property within 14 days for the agreed price. The seller cannot sell to anyone else during the option period.

What the OTP includes

• Purchase price.
• Option Fee (1% of purchase price).
• Exercise Fee (usually 4% of purchase price for resale; 9% for some resale negotiations where 5% + 5% split is bundled).
• Completion date (normally 10–12 weeks after option exercise).
• Full schedule of fixtures and fittings.
• Specific representations and warranties (title, encumbrances, occupation).

The 14-day clock starts

From Day 0 (date of OTP), the buyer has 14 calendar days to “exercise” the option — i.e., sign the acceptance copy and pay the remainder of the deposit (typically 4%). If the buyer lets Day 14 pass without exercising, the OTP lapses and the 1% Option Fee is forfeit.

Re-issue options and walking away

Occasionally buyers negotiate a re-issue of the OTP (e.g., pay another 1% for another 14 days). This is a commercial negotiation, not a statutory right. Always document the re-issue in writing with both parties’ lawyers.

Stage 3 — Exercise of Option (Day 1–14)

Exercising the option converts the one-sided right into a binding contract of sale. On exercise:

• Buyer pays the Exercise Fee (4% of purchase price, bringing total paid to 5%).
• Buyer’s lawyer lodges a caveat on the property title.
• Stamp duty clock starts — BSD (Buyer’s Stamp Duty) and ABSD are due within 14 days of the date of exercise.
• The 3-year SSD (Seller’s Stamp Duty) holding period starts ticking from the exercise date (for future resale planning).

Stamp duty deadlines are strict

BSD and ABSD attract late-payment penalties from day 15 onwards:

• 1% per month of unpaid duty, pro-rated.
• Maximum penalty: 4 × duty amount or S$25,000, whichever is lower.

In practice, the conveyancing lawyer coordinates stamp duty payment within 14 days because buyers almost never have the cash outlay ready on Day 1. This is the single most common source of late-fee surprises.

Stage 4 — Conveyancing (Day 14–56)

Between exercise and completion, the conveyancing team executes a full transaction checklist. The major items:

Stage 5 — Stamp duties, explained

Buyer’s Stamp Duty (BSD)

BSD is payable on every purchase — residential or commercial. The progressive rates (as at April 2026) for residential are:

• First S$180,000 — 1%
• Next S$180,000 — 2%
• Next S$640,000 — 3%
• Next S$500,000 — 4%
• Next S$1,500,000 — 5%
• Amounts above S$3,000,000 — 6%

Additional Buyer’s Stamp Duty (ABSD)

ABSD is payable on top of BSD and depends on your citizenship and your order of residential property ownership. For a full rate table, see the ABSD Singapore 2026 guide. Key rates:

• Singapore citizens — 1st property: 0%; 2nd: 20%; 3rd+: 30%.
• Permanent Residents — 1st: 5%; 2nd: 30%; 3rd+: 35%.
• Foreigners — 60% (since 27 April 2023).
• Corporates / trusts — 65%.

Seller’s Stamp Duty (SSD)

SSD applies if you sell within 3 years of purchase: 12% (Year 1), 8% (Year 2), 4% (Year 3). From Year 4 onward, SSD is zero. Factor SSD into any short-hold investment thesis.

New-launch timeline is different: Progressive Payment Scheme

For an uncompleted new-launch condo bought directly from a developer, the buyer does not pay 100% upfront. Instead, payment is staggered through the Progressive Payment Scheme (PPS), matching the construction milestones. A typical schedule:

Stamp duties are still payable in full within 14 days of S&P signing, not progressively. This is a common cash-flow shock for first-time new-launch buyers.

Worked example — resale purchase, first-property Singapore citizen

Top 7 timeline mistakes buyers make

1. Signing OTP before securing IPA

The single most expensive mistake. If the bank declines, you either pay the exercise fee plus the balance in cash or forfeit the option.

2. Missing the 14-day stamp duty window

Late stamp duty triggers a 4× penalty cap. Calendar the due date from the moment you exercise.

3. Treating ABSD refund as a discount

Married SC couples buying a second residential property can apply for ABSD refund if the first property is sold within the statutory window. That refund is not automatic — applications must be filed with IRAS within 6 months of selling the first property.

4. Forgetting the MCST requisition

Outstanding MCST fees, pending special assessments and upcoming major works are all liabilities that pass with title. Always ask the lawyer to raise specific requisitions on the MCST — “outstanding contributions” alone is too narrow a question.

5. CPF drawdown timing

CPF refunds to the seller’s CPF accounts must settle before completion. If the seller’s CPF balance is below the refund required, they top up in cash. A buyer who waits too long to instruct the lawyer on CPF usage can delay completion.

6. Not verifying title before exercising

Run the full title search before exercising, not after. A pending caveat or unreleased mortgage is a show-stopper that should stop the transaction at Day 1, not Day 45.

7. Forgetting the 3-year SSD window

Not a completion-day issue, but a common regret: buyers who flip within 3 years pay SSD of 4–12% on the selling price. Model this into any exit plan.

Special cases

Sub-sale transactions

A sub-sale is a transaction where a buyer who has signed an S&P with a developer sells their rights to a third party before TOP. The original buyer is the “sub-seller”. The sub-sale attracts SSD if within 3 years of the original purchase date. Conveyancing is more complex because both the original S&P and the sub-sale agreement must be reviewed.

Joint buyers (siblings, parents + children, business partners)

For joint buyers, each party’s ABSD is assessed individually. If one joint buyer already owns a property, the ABSD for the purchase is computed at the highest applicable rate across all joint buyers — not the average.

Decoupling to avoid ABSD

Decoupling — one spouse buying the other’s share to allow the seller spouse to buy a second property without ABSD — was substantially tightened by post-2021 cooling measures. Not all decouplings are now effective to avoid ABSD; consult a tax-aware conveyancing lawyer before relying on the structure.

Frequently Asked Questions

Can I extend the 14-day option period?
Only by mutual agreement, usually via a fresh re-issue. It is not a statutory right.

What if my loan is declined after exercising?
You must complete the purchase with cash or forfeit your 5% deposit. Always secure IPA before exercising.

Can I change my mind after signing the OTP?
Before exercise, yes — you lose only the 1% Option Fee. After exercise, you are contractually bound.

Who pays for repairs discovered during inspection?
Generally the seller for any defects existing before completion, subject to the S&P representations. Minor wear and tear is usually the buyer’s risk.

Can I use CPF for the Option Fee?
No. The 1% Option Fee must be paid in cash.

How long does a new-launch S&P negotiation take?
Typically 3 weeks from the Option to signing the S&P. Developers will not negotiate price in writing during this window, but rebate structures can be adjusted.

Does the lawyer represent the bank too?
Yes — the buyer’s conveyancing lawyer is typically appointed by the bank for the mortgage. Their first duty is to the bank on the mortgage, but they owe the buyer duties on the purchase.

What happens if the seller dies before completion?
Completion is delayed while the estate is administered. The S&P generally binds the estate; the buyer can either wait or — in limited cases — terminate.

Can I buy without a lawyer?
Technically yes, practically no. Bank-required mortgages and complex stamp duty calculations make DIY conveyancing a genuine risk.

Do I pay stamp duty on the rebate or on the gross price?
Stamp duty is on the net purchase price after any rebate credited on completion. For rebates paid post-completion, the treatment depends on whether IRAS treats the rebate as forming part of the consideration.

Key takeaway — discipline the calendar, not just the price

Related Guides

• ABSD Singapore 2026: The Complete Guide
• TDSR & MSR Singapore: 2026 Borrowing Limits
• Singapore Condo Handover Defects Checklist 2026
• Singapore Property Valuation 2026
• Singapore Property Agent Commission 2026

Authoritative sources: IRAS (iras.gov.sg), URA (ura.gov.sg), CPF Board (cpf.gov.sg), Singapore Land Authority.

Source: Singapore conveyancing practice and IRAS stamp duty rates as at April 2026.

Disclaimer: This article is for general informational purposes only and is not legal or financial advice. Every property transaction is unique. Engage a qualified conveyancing lawyer before committing to a purchase.