HDB Resale OTP Process Singapore 2026: Agent Guide

Disclaimer (Block 1): This article is for educational purposes only and is intended to assist CEA-registered property agents in understanding regulatory frameworks. It does not constitute financial, tax, or legal advice. LEVR's calculations are indicative only. Always verify rates and eligibility with your bank, HDB, CPF Board, or a licensed financial advisor before advising clients.

The HDB Resale OTP: Key Differences from Private Property

The Option to Purchase used in HDB resale transactions is governed by HDB’s prescribed format and differs significantly from the OTP used in private property sales. Agents acting in their first HDB resale after experience in private property must not assume the processes are interchangeable.

Key differences:

• Prescribed form: The HDB resale OTP uses HDB’s standard prescribed form, not a form negotiated between solicitors. The terms, timelines, and fee structure are fixed.
• Flat Portal registration prerequisite: Both seller (Intent to Sell) and buyer (Intent to Buy + valid HFE letter) must have completed their Flat Portal registrations before the OTP is granted. An OTP issued without these registrations in place may be rejected by HDB.
• Option fee limits: The option fee and exercise fee are capped by HDB, unlike private property OTPs where fees are negotiated freely.
• No solicitors at OTP stage: Solicitors are not involved in the HDB OTP stage. They are appointed by the buyer and seller after the OTP is exercised and the resale application is submitted to HDB.

Prerequisites Before Granting the OTP

Before the seller grants the OTP, both parties must have completed the following:

• Seller — Register Intent to Sell: The seller (or their agent) must register the Intent to Sell through the HDB Flat Portal (flat.gov.sg). This triggers an eligibility check confirming the MOP is satisfied, there are no outstanding prohibitions on sale, and the flat ownership is in order. Registration is valid for 12 months.
• Buyer — Register Intent to Buy: The buyer must register their Intent to Buy through the Flat Portal and must hold a valid HFE (Flat Eligibility) letter. The HFE letter confirms buyer eligibility, HDB loan quantum, and grant entitlement.
• Valuation request (if using HDB loan): If the buyer is using an HDB Concessionary Loan, HDB requires a valuation of the flat. HDB will assess value using its own internal valuation. If the buyer is using a bank loan, the bank orders a separate valuation. The valuation affects the purchase price ceiling for CPF usage.

Option Fee and Exercise Fee: HDB Limits

The HDB resale OTP has a prescribed structure for the fees:

• Option fee (paid on grant): The buyer pays the seller an option fee of between $1 and $1,000 when receiving the OTP. This is paid by the buyer to the seller directly (not through HDB). The exact amount is negotiated between buyer and seller within the HDB cap.
• Exercise fee (paid on exercise): If the buyer decides to exercise the OTP, an exercise fee of between $1 and $5,000 is paid by the buyer to the seller at the time of exercise. The option fee already paid is typically credited toward the exercise fee or purchase price, as stipulated in the OTP.
• Total deposit: The combined option fee and exercise fee (total deposit) must not exceed $5,000.
• Option fee forfeiture: If the buyer does not exercise the OTP within the 21-day window, the option fee is forfeited to the seller. No further claim by the seller arises.

Agents should remind both parties that the HDB OTP fees are substantially lower than in private property transactions (where OTP fees of 1% of purchase price are common). This is by design — HDB intends to limit the financial exposure of buyers who ultimately do not proceed.

The 21-Day Exercise Window

The HDB OTP is valid for 21 calendar days from the date the seller grants it. During this window:

• The buyer decides whether to proceed with the purchase. They may use this time to confirm financing, complete their HDB loan eligibility assessment, and prepare for the resale application.
• If the buyer wishes to exercise, they sign the OTP and pay the exercise fee to the seller within the 21-day window.
• If the buyer does not exercise within 21 days, the OTP lapses automatically. The seller retains the option fee and is free to re-list the flat or grant a new OTP to another buyer.
• The 21-day period cannot be extended by private agreement between buyer and seller — HDB’s prescribed OTP terms are fixed. If more time is needed, the parties must wait for the OTP to lapse and issue a new one, or the seller can wait before granting the OTP.

Exercising the OTP: Next Steps

Once the buyer exercises the OTP (by signing and paying the exercise fee), the transaction moves to the resale application stage:

• Resale application submission: Both buyer and seller must each submit their portion of the resale application through the Flat Portal within a specified period after the OTP is exercised (typically within 7 to 14 days — confirm current requirement with HDB).
• Appointment of solicitors: The buyer appoints a conveyancing solicitor after exercising the OTP. HDB provides a list of HDB-approved law firms. The seller may appoint a solicitor or handle the conveyancing themselves, but practically, most sellers use a firm.
• HDB processing and approval: HDB reviews the resale application and issues an Approval Letter. The resale completion appointment is then scheduled.
• Completion: At the resale completion appointment (held at HDB Hub or a designated venue), the balance purchase price is transferred, CPF is deducted, HDB loan is disbursed, and keys change hands. The standard timeline from resale submission to completion is approximately 8 weeks.

COV: Cash Over Valuation

If the agreed purchase price exceeds HDB’s valuation of the flat, the difference is the Cash Over Valuation (COV). COV must be paid entirely in cash — it cannot be funded using CPF OA or the HDB loan. CPF usage and the HDB loan are each capped at the lower of the purchase price or the HDB valuation.

Agents acting for buyers should calculate whether a proposed purchase price will result in COV and confirm that the buyer has sufficient cash to cover it, in addition to the downpayment and stamp duty. COV is a significant cause of transaction failure when buyers have underestimated their cash requirement.

Frequently Asked Questions

Disclaimer (Block 3): LEVR's calculator outputs are estimates based on inputs provided and current regulatory parameters as known at time of publication. They are not a guarantee of borrowing capacity, stamp duty liability, or CPF eligibility. Regulatory thresholds and rates may change. Always verify with IRAS, your bank, or a licensed financial advisor before making financial decisions.