Cash Over Valuation, read from the resale record
COV is the one number in an HDB purchase that you cannot look up, cannot borrow against, and do not find out until after you have already agreed the price.
What COV actually is
Cash Over Valuation is the difference between the price you agree with the seller and HDB's valuation of the flat. Your loan and your CPF are calculated on the valuation, not on the price. So every dollar of COV is a dollar you pay in cash, on top of your deposit, out of savings.
A flat agreed at S$680,000 and valued at S$650,000 carries S$30,000 of COV. Nothing about the flat has changed; what has changed is how much of it you can finance.
The timing that catches people out
The order of events is fixed, and it is the opposite of what most buyers expect:
- You and the seller agree a price.
- The seller grants you the Option to Purchase.
- Only then can a request for value be submitted to HDB.
- HDB issues its valuation.
- The gap, if there is one, is your COV — in cash.
So COV is not negotiated. It is discovered, after the point at which you have committed. And it cannot be looked up in advance by anyone, including us: HDB's valuation of a specific flat does not exist until step 3.
Nobody can tell you your COV before the Option to Purchase. Any figure quoted to you before that point — by anyone — is a guess about a number that has not been produced yet. A PriceVero rating is not an HDB valuation and cannot substitute for one.
Why you cannot look up other people's COV either
HDB published COV figures until 2014, then stopped — precisely because published COV had become a bargaining anchor that pushed prices, rather than a reflection of them. Since then, the resale prices HDB publishes are the transacted prices only. The valuation behind each one is not disclosed.
Which leaves exactly one useful instrument: the transacted record itself.
What the record does tell you
HDB valuations are built on comparable transacted evidence. So the question “how exposed am I to COV?” becomes a question you can answer: how far is this asking price from what this block has actually been selling for?
The room for disagreement is measurable. Across 2,194 cells of the last 24 months where a single block, flat type and quarter saw at least three sales, the gap between the highest and lowest price in that cell was:
| Same block, same flat type, same quarter | Highest to lowest |
|---|---|
| Median cell | 8.5% |
| 25th percentile | 5.2% |
| 75th percentile | 12.8% |
| Median gap in dollars | S$50,000 |
Read that carefully, because it is the whole point of this page. Two near-identical flats, in the same block, sold in the same three months, routinely differ by S$50,000. Some of that is real — storey, renovation, the exact size, remaining lease. Some of it is simply which buyer turned up. A valuer looking at comparable evidence has that same range to work within, and the further above it your agreed price sits, the more of the difference lands on you in cash.
How to reduce your exposure
- Anchor on the block, not the town. Town medians hide the S$50,000 range above. Your valuation will be built from the closest comparables, so you should negotiate from them too.
- Check how recent the comparables are. Two sales from eighteen months ago in a moving market support a very different number than two from last quarter.
- Price the differences explicitly. If the flat is ten storeys higher than the last comparable, that is worth something — about 7% per ten storeys inside the same block, with wide variation. If it is a bigger flat, do not use price per square foot to compare — that comparison points the wrong way.
- Know your cash ceiling before you sign. Decide what COV you could actually absorb, and treat that as a limit on the agreed price rather than a surprise afterwards.
- Remember the lease. A shorter remaining lease restricts CPF use and loan quantum independently of COV — why a shorter lease does not show up in the price per square foot explains where that cliff sits.
Check an asking price against the block's own record. Every block page prints its lodged resales; the price check rates a specific price for a specific flat type.
Common questions
What is COV in an HDB resale?
Cash Over Valuation is the amount by which the agreed purchase price exceeds HDB's valuation of the flat. It must be paid in cash, because CPF and the housing loan are both calculated on the valuation rather than on the price.
Can I find out the COV before I buy?
No. HDB's valuation of a specific flat does not exist until after the Option to Purchase has been granted and a request for value has been submitted. Any COV figure quoted before that is a guess.
Why can't I look up COV for recent sales?
HDB stopped publishing COV in 2014. Only the transacted resale prices are published now, and the valuation behind each sale is not disclosed.
Can I use CPF or a loan to pay COV?
No. COV is the part of the price above the valuation, and both CPF usage and loan quantum are calculated on the valuation. It has to be cash.
How much COV is normal?
There is no published figure to answer that. What can be measured is how much room there is for disagreement: within a single block, flat type and quarter, recent sales differ by about 8.5% from highest to lowest, a median gap of around S$50,000.
Does PriceVero tell me my COV?
No, and it cannot. A PriceVero rating checks an asking price against lodged transactions. It is not an HDB valuation, is not prepared by a licensed valuer, and does not predict what HDB will value a flat at.
HDB transaction data: Housing & Development Board, via data.gov.sg, used under the Singapore Open Data Licence. Dispersion figures cover resales lodged in the 24 months to the latest published month, in cells of one block, flat type and quarter with at least three sales. A PriceVero rating is not a valuation, is not an HDB valuation, and cannot tell you Cash Over Valuation — that figure does not exist until an Option to Purchase has been granted.