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.
Why Valuation Matters in HDB Resale
When a buyer purchases an HDB resale flat, the agreed purchase price is set between buyer and seller. However, the amount the buyer can use from CPF or borrow under an HDB concessionary loan is capped at the lower of the purchase price or the flat’s assessed value.
If the agreed price exceeds the assessed value, the difference — known as Cash Over Valuation (COV) — must be paid entirely in cash by the buyer. CPF cannot be used to fund COV, and the HDB loan or bank loan quantum is not increased to cover it.
This means valuation directly determines how much cash the buyer needs at completion beyond their CPF balance and loan drawdown.
The Official Valuation Assessment (OVA)
HDB conducts an Official Valuation Assessment (OVA) as part of the resale application process. The OVA:
- Timing: The OVA is conducted after the buyer submits their portion of the resale application. The buyer cannot request an OVA independently before exercising the OTP — valuation is triggered by the formal application.
- Methodology: HDB’s appointed valuer uses comparable transacted prices for similar flat types in the same block or estate, adjusted for floor level, orientation, remaining lease, and condition. The valuation reflects market value at the time of assessment.
- Result communicated to buyer: HDB informs the buyer of the assessed value after the OVA is complete. If the agreed price exceeds the assessed value, HDB will inform the buyer of the COV amount and require the buyer to confirm they have sufficient cash to fund it.
- No separate charge: The OVA is included in HDB’s resale administrative fee — there is no additional cost to the buyer for the OVA itself.
Cash Over Valuation (COV)
COV arises when the agreed purchase price exceeds the HDB assessed value. Key COV mechanics:
- Paid entirely in cash: COV cannot be funded by CPF, HDB loan, or bank loan. The full COV amount must come from the buyer’s own cash savings.
- No upper limit: HDB does not cap the COV amount a buyer can agree to pay. The buyer and seller are free to agree any price. However, the buyer must have the cash to fund it.
- Due at completion: The COV is part of the purchase price and is paid to the seller at completion. It is not a separate fee to HDB.
- Impact on grants: CPF housing grants (EHG, Family Grant, Proximity Grant) are applied based on the lower of the purchase price or assessed value — COV does not reduce the grant quantum, but the grant is applied to the base valuation amount.
How Valuation Affects CPF Usage
The buyer’s CPF drawdown for an HDB resale purchase is capped at the lower of the purchase price or the assessed value. If the purchase price equals or is below the assessed value, the buyer can draw down CPF up to the applicable CPF housing withdrawal limit. If there is COV, the CPF limit is still based on the assessed value — the COV component is excluded from CPF-eligible costs.
CPF housing withdrawal limits also depend on the flat’s remaining lease. For flats with remaining leases below 60 years:
- The CPF usage limit is pro-rated based on whether the flat’s remaining lease can cover the youngest buyer to age 95.
- If the remaining lease cannot cover the youngest buyer to age 95, CPF usage is pro-rated proportionally, and Retirement Account top-up requirements may also apply.
- Flats with remaining leases below 20 years cannot be purchased using CPF.
How Valuation Affects HDB Loan Quantum
The HDB concessionary loan is capped at the lower of:
- 90% of the purchase price or assessed value (whichever is lower)
- The buyer’s TDSR-assessed loan limit
- The remaining CPF Valuation Limit minus CPF already used (the CPF OA balance is typically depleted first before the HDB loan is drawn)
For bank loan buyers, the Loan-to-Value (LTV) limit for HDB resale flats is 75% of the lower of purchase price or assessed value (for first housing loan). The remaining 25% must come from cash and/or CPF.
What Agents Should Do
Before the buyer exercises the OTP, agents should:
- Search recent HDB resale transactions for the same block and flat type via the HDB Flat Portal or data.gov.sg. Use transactions from the past 3–6 months as the most relevant comparables.
- Estimate the likely assessed value range and calculate the potential COV if the agreed price exceeds recent transacted levels for comparable units.
- Confirm with the buyer that they have sufficient cash reserves to fund the estimated COV before the OTP is granted. Do not allow a buyer to exercise the OTP on the assumption that the valuation will match the agreed price.
- Explain the CPF drawdown impact clearly — if there is COV, the CPF the buyer can use is capped at the assessed value, not the full price.
- For older flats (remaining lease below 60 years): calculate the pro-rated CPF limit before advising the buyer on how much CPF they can use.
Frequently Asked Questions
Q: Can the buyer request a review of the HDB valuation if they think it is too low?
A: HDB's valuation is conducted by an appointed professional valuer and HDB does not have a formal appeals process for the OVA in the same way a bank valuation can be reviewed by requesting a second valuer. If the buyer believes the valuation is materially incorrect, they can raise a query with HDB through the resale portal. In practice, the buyer's options are limited — accept the COV, renegotiate the price with the seller, or withdraw (at the cost of the option fee and any legal fees incurred). This is why buyers should estimate valuation risk before exercising the OTP.
Q: Does the seller need to know the valuation?
A: HDB informs the buyer of the OVA result, not the seller. The seller agreed to the purchase price before valuation — the seller's proceeds are the agreed price regardless of whether COV arises. However, if the buyer is unable to fund the COV and the transaction falls through, the seller loses time and must re-market. Sellers in a motivated market may wish to accept a slightly lower price to avoid COV risk and the associated buyer funding uncertainty.
Q: Is there COV on every HDB resale flat sold above asking price?
A: COV arises only if the agreed price exceeds the HDB assessed value — not simply because an offer exceeds the listing price. If the assessed value is at or above the agreed price, there is no COV. In buoyant markets, assessed values often track transacted prices closely. In periods of rapid price appreciation, assessed values may lag, leading to more frequent COV situations. Agents should check recent comparables rather than assuming the assessed value will match any agreed price.
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.