Cash Over Valuation on an HDB Resale Flat

The Option to Purchase (OTP) comes first and the valuation comes second. You can only submit a Request for Value to HDB after the seller has granted you the OTP, so you agree a price without knowing what HDB will value the flat at.

Cash over valuation (COV) is the gap between that agreed price and HDB's valuation. Because both the housing loan and your CPF usage are capped by the lower of price or valuation, the entire gap comes out of cash savings.

The sequence puts your price ahead of the number

The steps run in a fixed order:

1. You and the seller agree a price and the seller grants the OTP.
2. You or your salesperson submit the Request for Value to HDB, with a scanned copy of page 1 of the OTP, by the next working day after the Option date.
3. HDB assigns a valuer. The seller must allow the valuer to inspect the flat within three working days of HDB's notification.
4. The value is made available in the HDB Flat Portal and stays valid for three months.

The Request for Value costs $120 including GST for a buyer granted an OTP on or after 1 January 2018. The standard option period is 21 calendar days, so the valuation, your loan approval and your cash planning all have to fit inside it.

Missing the next-working-day submission deadline is the avoidable error here. Our HDB resale timeline sets out the deadlines in order.

The loan and CPF both stop at the valuation

HDB and the banks apply the loan-to-value limit to the lower of the resale price or the value of the flat. CPF applies the Valuation Limit, which is also the lower of the purchase price and the valuation.

Both ceilings therefore sit at the valuation whenever the price exceeds it. The COV is outside both, which is what forces it into cash.

Buyer's Stamp Duty runs the other way. It is assessed on the higher of the purchase price or market value, so a COV deal does not reduce the duty. Our Buyer's Stamp Duty guide covers the rate bands.

What a $30,000 COV does to your cash

Take a $700,000 agreed price with a 75% loan, and compare a valuation that matches the price against one that comes in $30,000 below.

	Valuation $700,000	Valuation $670,000
Agreed price	$700,000	$700,000
HDB valuation	$700,000	$670,000
Cash over valuation	$0	$30,000
Maximum 75% loan	$525,000	$502,500
Balance to fund	$175,000	$197,500
Of which must be cash (COV)	$0	$30,000
Minimum cash on a bank loan (5% of valuation)	$35,000	$33,500
Covered by CPF OA or cash	$140,000	$134,000

A $30,000 valuation shortfall does two things at once. It raises the balance you must fund by $22,500, because the loan shrinks with the valuation. And it converts $30,000 of that balance from CPF-eligible money into cash.

For a household that planned to fund the downpayment largely from CPF, the second effect is the harder one. The CPF accrued interest guide explains the Valuation Limit that produces it.

Judging whether a COV is justified

A COV is not automatically an overpayment. The valuation is an assessment of the flat against comparable transactions, and specific attributes can sit outside what comparables capture.

Reasons a COV can be defensible:

• A high floor or a corner unit in a stack where recent transactions were low floors.
• Substantial renovation you would otherwise pay for and wait for.
• Genuine scarcity of the flat type in a town you have a fixed reason to be in, such as a school or a parent's address.
• An unblocked outlook or orientation that comparables in the block do not share.

Reasons a COV is usually not defensible:

• The seller's asking price was anchored on one high transaction in the block.
• The premium is for facilities or a location that comparables already reflect.
• You are paying for renovation you intend to remove.

Compare like with like before deciding: same flat type, similar size, floor band and a recent period. Our HDB resale price trends for 2026 covers the market direction, and the HDB resale process guide covers where this decision sits in the transaction.

When the valuation comes in low

You have three routes inside the option period, and none of them is costless.

Pay the gap in cash. Workable when you have the reserve and the flat has attributes the comparables miss. Check what it leaves for renovation, the option exercise fee and moving costs before committing.

Ask the seller to lower the price. The seller is not obliged to agree, and in a firm market often will not. A seller who has already granted the OTP at a stated price holds the stronger position. Where the seller has their own onward purchase, they may have less room than they appear to.

Let the option lapse. You forfeit the option fee, which can be up to $1,000. Against a $30,000 cash gap, that is sometimes the cheaper outcome.

The one route that does not exist is funding the gap from CPF or a larger loan. Both are capped at the valuation.

Sellers carry the valuation risk too

A seller who prices above what comparables support is not protected by having granted the OTP. If the buyer cannot fund the gap in cash and walks, the seller keeps the option fee but returns to the market having lost the option period, and the next buyer sees the same valuation.

The seller also has a duty inside the process. HDB requires the seller to let the assigned valuer inspect the flat within three working days of being notified. Delaying that inspection compresses the buyer's remaining option period and raises the chance the deal fails on timing rather than on price.

Sellers with an onward purchase have the most to lose from a lapsed option, because their own timeline moves with it. Our HDB selling costs guide covers the cost side of a sale that has to be restarted.

Checks before you agree a price

• Pull recent transacted prices for the same flat type, size and floor band in the block or immediate cluster, not the whole town.
• Decide your maximum COV in cash before you negotiate, and keep it separate from your renovation budget.
• Confirm you can submit the Request for Value by the next working day after the Option date.
• On a bank loan, confirm the 5% minimum cash is available on top of any COV.
• Ask what the option fee is, since that is what you forfeit if you walk after a low valuation.

Agree a COV only where you can name the specific attribute you are paying for and you hold the cash without touching the renovation or emergency reserve. Where the premium is for something the comparables already price, the valuation is telling you what the flat is worth and walking away costs you the option fee rather than the gap.

Sources: HDB, Request for Value for a resale flat, HDB, Option to Purchase, HDB, terms and conditions for Request for Value, CPF Board, how much CPF savings you can use for your home purchase, IRAS, Buyer's Stamp Duty.