HDB Resale Option to Purchase (Singapore)
HDB RESALE OPTION TO PURCHASE
Housing and Development Act (Cap. 129) — Housing & Development Board (HDB), Singapore
This Option to Purchase is granted on [OTP Date]. It must be exercised by [Exercise Deadline] (21 calendar days from grant date).
1. PARTIES
SELLER(S): [Seller Name] (NRIC: [Seller NRIC])
Address: [Seller Address]
BUYER(S): [Buyer Name] (NRIC: [Buyer NRIC])
Address: [Buyer Address]
HFE Letter Reference: [HFE Reference]
2. FLAT DETAILS
Address: [Flat Address]
Flat Type: [Flat Type]
Lease Commencement Year: [Lease Year]
3. PURCHASE PRICE AND FEES
Agreed Resale Price: [Resale Price]
Option Fee (paid on grant): [Option Fee]
Exercise Fee (paid on exercise): [Exercise Fee]
CPF Usage: [CPF Usage]
4. OPTION TERMS
4.1 In consideration of the Option Fee, the Seller grants the Buyer this Option to Purchase the flat at the Agreed Resale Price.
4.2 The Buyer may exercise this Option by paying the Exercise Fee to the Seller and submitting the HDB Resale Application on the HDB Resale Portal within 7 days of exercising the OTP.
4.3 If the Buyer does not exercise the Option by the Exercise Deadline, the Option lapses and the Option Fee is forfeited to the Seller.
4.4 Buyer’s Stamp Duty (BSD) and Additional Buyer’s Stamp Duty (ABSD, if applicable) are payable by the Buyer to IRAS within 14 days of exercising the OTP.
4.5 CPF savings usage is subject to CPF Board approval and the applicable CPF withdrawal limits based on the remaining lease of the flat.
4.6 This transaction is subject to HDB’s approval. The sale shall not be completed without HDB’s written approval under the Housing and Development Act (Cap. 129).
Seller
________________
Signature
Buyer
________________
Signature
What Is a HDB Resale Option to Purchase (Singapore)?
A HDB Resale Option to Purchase in Singapore records the terms on which an interest in the property is to be offered, transferred, or reserved.
The OTP process begins when the seller and buyer agree on the purchase price and the seller grants the OTP to the buyer through the HDB Resale Portal. The buyer pays an option fee of between S$1 and S$1,000 (the amount is negotiable between the parties) to secure the option. The buyer then has 21 calendar days from the date the OTP is granted to decide whether to exercise the option — during this period, the seller cannot grant an OTP to any other buyer for the same flat. If the buyer exercises the OTP, the buyer pays an exercise fee (an additional deposit bringing the total to up to S$5,000), and both parties proceed to submit the HDB resale application.
The OTP must be registered on the HDB Resale Portal — paper-based OTPs are no longer accepted for HDB resale transactions. Both parties access the portal using their SingPass credentials, and the OTP record is electronically linked to the HDB Flat Eligibility (HFE) Letter that the buyer must have obtained before exercising the option. This digital integration allows HDB to verify the buyer's eligibility, grant entitlements, and loan quantum before the resale application proceeds.
Key regulatory requirements governing the HDB Resale OTP include Buyer's Stamp Duty (BSD) under the Stamp Duties Act (Cap. 312), payable to the Inland Revenue Authority of Singapore (IRAS) within 14 days of exercising the OTP. Additional Buyer's Stamp Duty (ABSD) applies if the buyer already owns another residential property. The Land Titles Act 1993 (Cap. 157) governs the eventual registration of the flat transfer with the Singapore Land Authority (SLA). The Central Provident Fund Act (Cap. 36) governs CPF fund withdrawals used for the purchase price, and the CPF Board processes the withdrawal application upon HDB's resale approval.
The resale OTP process involves several important consumer protections. The 21-day cooling-off period gives the buyer time to conduct due diligence — including flat inspection, verification of the remaining lease (HDB leases are 99 years from the date of the original lease), checking of outstanding loans and charges, and confirming that the flat is not affected by any upcoming SERS (Selective En bloc Redevelopment Scheme) plans. If the buyer decides not to exercise the OTP, the option fee is forfeited to the seller, but the buyer has no further liability.
The HDB Resale Portal's digital OTP system also records the complete transaction history, including any previous OTPs granted for the same flat that lapsed or were not exercised, providing transparency for both parties. HDB's integration with the Council for Estate Agencies (CEA) system verifies that property agents involved in the transaction are registered and their commission arrangements are documented. CEA-registered agents supporting HDB resale transactions must comply with the Estate Agents (Estate Agency Work) Regulations, including disclosing their commission arrangements and any conflicts of interest to their clients.
When Do You Need a HDB Resale Option to Purchase (Singapore)?
An HDB Resale Option to Purchase is needed at the critical juncture when a buyer and seller have agreed on the purchase price for an HDB resale flat and wish to formalize their commitment to proceed with the transaction.
Buyers who have identified a flat they wish to purchase and have negotiated the price with the seller must obtain an OTP before they can submit the HDB resale application. The HDB Resale Portal does not allow resale application submission without a registered OTP. Before requesting the OTP, the buyer must have a valid HDB Flat Eligibility (HFE) Letter — the HFE letter confirms the buyer's eligibility to purchase, CPF housing grant entitlements, and HDB loan quantum, giving both parties confidence that the transaction can proceed.
Sellers listing their flat on the resale market — whether through a property agent registered with the Council for Estate Agencies (CEA) or on their own — must grant the OTP through the HDB Resale Portal once they accept a buyer's offer. Sellers who have received multiple offers should select the buyer whose offer they wish to accept before granting the OTP, as only one OTP can be active for a flat at any given time.
Buyers purchasing a resale flat to upgrade from their current HDB flat (selling the current flat and buying a replacement) must coordinate the timing of both transactions. The buyer should aim to exercise the OTP for the new flat only after confirming the sale of their current flat, to avoid owning two HDB flats simultaneously (which is not permitted under HDB regulations). The 21-day option period provides a window for this coordination.
Buyers relying on bank financing must coordinate with their bank during the option period. The bank requires a copy of the OTP to finalize the loan approval and issue the letter of offer. Buyers should obtain an approval-in-principle before viewing flats and negotiate the OTP timing to allow the bank sufficient time to process the formal loan offer within the 21-day window.
Buyers who are Singapore Permanent Residents must verify that the SPR Quota for the specific block has not been reached before requesting the OTP — this check is available on the HDB Resale Portal. Exercising an OTP for a block where the SPR Quota is full will result in the resale application being rejected by HDB.
What to Include in Your HDB Resale Option to Purchase (Singapore)
An HDB Resale Option to Purchase registered on the HDB Resale Portal must contain the following prescribed elements, as mandated by HDB's Enhanced Resale Procedures and the Housing and Development (Resale) Rules.
Seller details must include the full legal names and NRIC numbers of all registered flat owners. All co-owners must consent to the sale — the HDB Resale Portal requires all owners to log in with their SingPass and confirm the OTP grant. If a co-owner is deceased, the surviving owner must first complete the change of flat ownership process with HDB before granting an OTP.
Buyer details must include the full legal names and NRIC numbers (or FIN numbers for Permanent Residents) of all proposed buyers. The buyer's valid HFE letter reference number is electronically linked to the OTP on the HDB Resale Portal.
Flat details must specify the block number, street name, unit number (floor and unit), town, flat type (e.g., 3-room, 4-room, 5-room, Executive, or DBSS), approximate floor area, and the remaining lease duration. The remaining lease is critical for buyers using CPF funds — the CPF Board requires the remaining lease to cover the youngest buyer to at least age 95 for full CPF usage, under CPF Board's property withdrawal rules.
Purchase price must state the agreed purchase price in Singapore Dollars. The price is negotiable between the parties and is not subject to any government-imposed minimum or maximum. However, if the price exceeds the flat's valuation (as determined by HDB's appointed valuers or the buyer's bank), the Cash-Over-Valuation (COV) amount must be paid in cash — CPF funds and housing loans cannot cover the COV.
Option fee and exercise fee must state the option fee amount (S$1 to S$1,000) paid by the buyer to the seller upon granting of the OTP, and the exercise fee amount (bringing the total deposit to up to S$5,000) payable upon exercise. These amounts are deducted from the purchase price at completion.
Option period must confirm the 21-calendar-day period during which the buyer may exercise or decline the option. The start date (date of OTP grant) and expiry date are recorded on the HDB Resale Portal. If the buyer does not exercise the OTP by the expiry date, the option lapses automatically and the option fee is forfeited to the seller.
Conditions and acknowledgments must include: the buyer's acknowledgment that Buyer's Stamp Duty and ABSD (if applicable) are payable to IRAS; the seller's acknowledgment that CPF refunds (principal plus accrued interest) will be deducted from the sale proceeds; both parties' agreement to submit the resale application through the HDB Resale Portal within the prescribed timeframe after OTP exercise; and both parties' agreement to comply with all HDB terms and conditions for the resale transaction. The forms-legal.com HDB Resale OTP template mirrors HDB's prescribed format with all mandatory fields and explanatory notes for first-time buyers.
Completion timeline should indicate the expected completion date (typically 8 to 12 weeks after OTP exercise), subject to HDB's processing timeline and any conditions imposed by HDB during the resale application review.
Property agent disclosure: If either party is represented by a property agent registered with the Council for Estate Agencies (CEA), the agent's name, CEA registration number, and the estate agency firm's licence number must be recorded. CEA requires agents to use the prescribed agency agreement and to disclose their commission arrangements to their clients. The OTP should note whether the buyer or seller is responsible for agent commission and the agreed commission amount or percentage. Co-broking arrangements (where both buyer and seller are represented by different agents) are common in Singapore's HDB resale market and should be documented to avoid commission disputes. Under Singapore law, the Singapore common law of contract, the Conveyancing and Law of Property Act (Cap. 61), and the Housing and Development Act (Cap. 129) govern the core requirements for this type of document.
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Forms Legal. (2026). HDB Resale Option to Purchase (Singapore) (Singapore) [Legal document template]. Forms Legal. https://forms-legal.com/singapore/real-estate/purchase-sale/hdb-resale-option-to-purchase-singapore
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author = {{Forms Legal}},
title = {HDB Resale Option to Purchase (Singapore) (Singapore)},
year = {2026},
howpublished = {\url{https://forms-legal.com/singapore/real-estate/purchase-sale/hdb-resale-option-to-purchase-singapore}},
note = {Free legal document template. Based on Land Titles Act 1993 (Cap. 157)}
}Frequently Asked Questions
The HDB Resale Option to Purchase (OTP) process is conducted entirely through the HDB Resale Portal using SingPass authentication. The process follows these steps.
First, the seller grants the OTP to the buyer on the HDB Resale Portal. The seller logs in, enters the buyer's details and the agreed purchase price, and specifies the option fee amount (between S$1 and S$1,000). The seller pays the option fee directly to the buyer — HDB does not collect or escrow the option fee. Both parties receive email confirmation from HDB.
Second, the buyer has 21 calendar days to decide whether to exercise the option. During this period, the buyer should conduct due diligence: inspect the flat, verify the remaining lease and flat details on HDB InfoWEB, confirm financing arrangements with their bank or HDB (for HDB Concessionary Loan), and check for any encumbrances or outstanding charges.
Third, if the buyer decides to proceed, the buyer exercises the OTP on the HDB Resale Portal within the 21-day window and pays the exercise fee to the seller (bringing the total deposit to up to S$5,000). If the buyer decides not to proceed, the option lapses on the 22nd day and the option fee is forfeited to the seller.
Fourth, after OTP exercise, both parties submit their respective portions of the HDB resale application through the portal — the seller submits first, and the buyer submits within 7 days. HDB then processes the resale application, which takes approximately 8 weeks.
If the buyer does not exercise the HDB Resale Option to Purchase within the 21-calendar-day option period, the OTP lapses automatically on the HDB Resale Portal. The consequences are clearly defined by HDB's resale procedures.
The option fee paid by the buyer to the seller is forfeited — the seller keeps the option fee as compensation for holding the flat off the market during the option period. The buyer has no further financial liability to the seller beyond the forfeited option fee.
The seller is free to grant a new OTP to another buyer immediately after the previous OTP lapses. There is no mandatory waiting period between OTPs for the seller. However, a seller can only have one active OTP at any time — the seller cannot grant OTPs to multiple buyers simultaneously.
The buyer can approach the same seller (or any other seller) for a new OTP without penalty. There is no limit on the number of OTPs a buyer can request over time, and there is no HDB restriction on the buyer re-entering into an OTP for the same flat with the same seller at a later date.
Buyers should be aware that their HFE letter has a 6-month validity period. If the HFE letter expires during the OTP process, the buyer must apply for a new HFE letter before exercising any future OTP. Changes in the buyer's financial circumstances (income, property ownership, or CPF balance) between the HFE letter issuance and the new application may result in different eligibility outcomes.
The option fee for an HDB Resale OTP is fully negotiable between the buyer and seller, within HDB's prescribed range of S$1 to S$1,000. HDB sets the maximum option fee at S$1,000 to protect buyers from excessive upfront financial commitment during the 21-day consideration period — a consumer protection measure specific to HDB resale transactions (private property OTPs typically involve option fees of 1% of the purchase price, which can be tens of thousands of dollars).
In practice, most HDB resale transactions involve an option fee at or near the S$1,000 maximum. Sellers prefer a higher option fee because it represents the buyer's financial commitment — a buyer who forfeits a S$1,000 option fee has more at stake than one who forfeits S$1. Buyers in a competitive market may offer the full S$1,000 to demonstrate seriousness.
The option fee is paid directly from the buyer to the seller — HDB does not collect, hold, or escrow the option fee. Payment is typically made by cash or cheque at the time the seller grants the OTP. The option fee is deducted from the total purchase price at completion, so it is not an additional cost but an advance payment.
The exercise fee — paid when the buyer exercises the OTP — brings the total deposit to up to S$5,000. The exercise fee amount (i.e., S$5,000 minus the option fee) is also negotiable within HDB's prescribed limits. Both amounts are credited against the purchase price at completion.
The 21-day OTP period is the buyer's window to conduct thorough due diligence before committing to the HDB resale purchase. Recommended checks include the following. Flat inspection: Visit the flat (ideally multiple times, at different times of day) to assess the condition, natural lighting, ventilation, noise levels, and any visible defects. Check the condition of the kitchen, bathrooms, flooring, windows, and common areas. Note any unauthorized renovations that may need to be rectified. Lease information: Verify the remaining lease on the HDB InfoWEB portal. HDB flats have 99-year leases from the date of the original lease — not from the date the current owner purchased the flat. The remaining lease affects the flat's value, CPF usage (the CPF Board requires the lease to cover the youngest buyer to age 95 for full CPF withdrawal), and bank loan quantum (banks typically require a minimum remaining lease of 30-35 years). Valuation: If using a bank loan, the bank will commission a property valuation. If the purchase price exceeds the valuation, the Cash-Over-Valuation (COV) must be paid in cash. Request the valuation report as early as possible in the option period. EIP and SPR Quota: Confirm on the HDB Resale Portal that the flat's block has not reached its Ethnic Integration Policy (EIP) or SPR Quota limit for the buyer's racial group or residency status. Quota status can change between the time the OTP was granted and the time of exercise.
Buyer's Stamp Duty (BSD) is payable to the Inland Revenue Authority of Singapore (IRAS) on every HDB resale transaction, calculated on the higher of the purchase price or the market value of the flat. BSD must be paid within 14 days of the date the buyer exercises the OTP.
BSD rates (as of 2024) are: first S$180,000 at 1%; next S$180,000 at 2%; next S$640,000 at 3%; and the remaining amount at 4%. For a resale flat purchased at S$500,000, the BSD is approximately S$9,600. The buyer's conveyancing lawyer typically handles BSD payment to IRAS on the buyer's behalf, using the buyer's CPF funds (CPF can be used to pay BSD) or cash.
Additional Buyer's Stamp Duty (ABSD) applies if the buyer already owns another residential property in Singapore. Singapore Citizens pay 20% ABSD on their second residential property; Singapore Permanent Residents pay 5% ABSD on their first property and 30% on their second. ABSD is payable in addition to BSD, on the same purchase price or market value basis. ABSD must be paid in cash — CPF funds cannot be used for ABSD.
Buyers who are selling their current HDB flat or private property and purchasing the resale flat as a replacement may be eligible for ABSD remission — the ABSD is refunded by IRAS if the existing property is sold within six months of the new property's purchase completion (or within the timeframe specified by IRAS). The buyer must pay the ABSD upfront and apply for remission after selling the existing property.
This template is provided for informational purposes only and does not constitute legal advice. Laws vary by jurisdiction and change over time. Consult a qualified attorney for advice specific to your situation.Full disclaimer
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