Cash over valuation, explained
Agree a price above the flat's valuation and the gap comes with a hard rule: it is paid in cash. Not from your CPF, not from your loan - cash, on top of everything else.
Cash over valuation, or COV, is simply the amount by which the price you agree exceeds the flat's official valuation. Agree $620,000 on a flat HDB values at $580,000 and the COV is $40,000. It sounds like an accounting footnote. It is anything but - because of one rule about where that $40,000 can come from.
Why you only find out after you have agreed
It used to work the other way around. Before 2014, valuations came first and buyers openly haggled a COV on top, which helped push COV to eye-watering levels - a median near $38,000 across the island in 2011, and far more for sought-after units. So the rules were flipped. Today you must secure an Option to Purchase - agreeing the price with the seller - before you can request the valuation. The valuation is revealed only after you have committed to a number.
That is the trap hiding in the process. You commit to $620,000 first; only later does the valuation come back at $580,000 and hand you a $40,000 COV you now have to fund in cash. Which is exactly why judging a fair number before you sign - from real, recent comparables rather than one hopeful sale - matters so much. We walk through that in how to tell if an asking price is fair.
The rule that bites: everything is sized off the valuation
Your housing loan and your CPF are both capped at the lower of price or valuation. The bank or HDB lends up to 75% of the valuation; CPF can fund the flat up to the valuation. Anything you pay above the valuation is beyond both - so the COV has nowhere to come from but your own cash. Here is the same $620,000 purchase, fully accounted for:
| Part of the price | Amount | Paid from |
|---|---|---|
| Housing loan (75% of valuation) | $435,000 | Loan, repaid monthly |
| Downpayment on the valuation (25%) | $145,000 | CPF / cash |
| Cash over valuation (the $40k gap) | $40,000 | Cash only |
| Agreed price | $620,000 |
So a COV does not just raise the price. It raises the share of the purchase that has to be cash rather than CPF, which for many buyers is the real constraint. On an HDB loan the entire 25% downpayment might have come from CPF; the $40,000 COV cannot, and lands on top of the deposit, fees and stamp duty covered in what a resale flat really costs to buy.
It nudges the tax up too. Buyer's Stamp Duty is charged on the higher of price or valuation - so here it is worked on the $620,000 price, not the $580,000 valuation, adding a little more to the bill.
How big does COV get?
It swings with the market, hard. At the 2011 peak the median sat near $38,000, with popular flats reportedly commanding six figures. After the 2014 rule change COV all but vanished: by 2016 roughly four in five resale flats changed hands at or below valuation, and COV faded from the conversation entirely.
Then the post-2020 boom brought it back. As resale prices climbed faster than valuations could follow, COV returned for the more wanted flats - recent quarters have seen somewhere between one in six and one in three buyers paying some COV, though well short of the 2011 frenzy. One wrinkle to know: HDB stopped publishing COV figures back in 2014, so there is no official median to look up now - you learn your own COV, and only after your valuation comes in.
COV is not a fee or a rule you can appeal. It is just arithmetic: price minus valuation, payable in cash. The only levers you control are the price you agree and the cash buffer you keep for the gap.
How to keep COV from catching you out
- Price off real comparables, not hope. The valuation will track recent like-for-like sales in the block and area. Anchor your offer to the same evidence and the gap tends to shrink.
- Keep a cash buffer for the gap. In a market where COV has returned, budget as if you may pay some - and remember it is cash the CPF and loan will not touch.
- Do not treat the seller's asking COV as fixed. Since 2014 there is no official COV to "match". A price above valuation is a negotiation, not a given.
- Weigh COV against the flat, not your ego. Paying over valuation can be rational for a genuinely scarce unit - a high floor, a rare layout - but know you are spending unrecoverable cash for it.
- Mind the resale value. The cash you pay over valuation is not lent against or bankable; if the market softens, it is the first money you will not see again.
Anchor your offer to real prices
See what flats of the same type and town have actually sold for recently, so the number you agree stays close to what a valuer will see.