The price is agreed, but the bank valued the flat below it, so the mortgage is short and you cover the gap in cash. This is how to check whether the bank is actually wrong, and the five moves available to save the deal, in order of cost.
By the QPV Founder. Published 03/06/2026.
When a bank valuation comes in low, the bank lends against the lower of your agreed price and its own valuation, not the price you signed. At the standard 70 percent loan to value cap, that means the mortgage is sized off the smaller number and you fund the difference in cash, on top of your normal deposit. If you cannot cover the gap, the purchase can collapse and the deposit is at risk.
You have five moves, and they run from cheapest to most expensive: confirm the bank is genuinely wrong rather than conservative, shop the valuation across other banks, appeal with an independent valuation report, look at the Mortgage Insurance Programme, renegotiate with the seller, or fund the gap yourself. The rest of this article works through each one, and through the one question that decides which move is right: is the low figure a bank error, or a real market price.
A bank valuation is a number produced by the bank internal system from recent transactions, building data, and market conditions. It does not have to match your price, and when it does not, the cause is usually one of three things.
One: the bank model lags the market. Bank valuation models lean on the past 6 to 12 months of transactions. When the market moves quickly, the model can trail the latest prices. In a falling market that produces a low figure; in a fast-rising market the model can also undershoot a freshly agreed price because it is anchored to older, lower comparables. The model is built to be conservative either way.
Two: every bank values differently. HSBC, Hang Seng, Bank of China, Standard Chartered, and Citi run independent valuation systems, and the same flat can come back 5 to 15 percent apart between them. One bank uses one set of reference transactions, building risk loadings, and district indices; the next bank uses another. A low figure from one bank is not a market verdict.
Three: a building or unit risk premium. Older blocks, buildings with a leakage or structural history, and units with title complications (unauthorised building works, or an unpaid land premium on a subsidised flat) carry an internal risk loading. The valuation on these can sit 5 to 10 percent below comparable units in the same district. If your flat is in this category, the low figure is structural, not a market signal.
Context matters, because it changes your strategy. Hong Kong residential prices fell roughly 24 percent from the September 2021 peak to mid-2025, and have since reversed. The Rating and Valuation Department private domestic price index reached 316.6 in April 2026, a roughly 30-month high, up 10.51 percent year on year and marking 11 consecutive months of gains. The market is climbing, not falling.
The clearest single signal is negative equity. The Hong Kong Monetary Authority reported 11,424 residential mortgage loans in negative equity at the end of March 2026, down 46.4 percent from 21,304 three months earlier, with the aggregate value falling 47.8 percent to HK$55 billion. Negative equity is defined by valuation against the outstanding loan balance, so a 46 percent fall in one quarter is, in large part, valuations catching back up to what people paid (rising prices and continued principal repayment both reduce the count).
The practical read for a buyer staring at a low figure today: in a rising market, a bank valuation that trails your agreed price is frequently a lag artefact, the model anchored to comparables from before the recent climb, rather than a verdict that you overpaid. That is good news, because a lag is the most fixable cause. The next section is how to tell.
Before you spend money or panic, run five checks. They cost nothing and take a few minutes each.
Once you have confirmed the gap is real, the responses run from lowest cost to highest.
One: shop the valuation across banks. Because each bank values independently, apply to three to five at once and take the highest as your mortgage basis. A mortgage referral firm such as mReferral or Centaline Mortgage can submit to several banks in one pass. Weigh the rate, cash rebate, penalty period, and approval speed, not only the valuation.
Two: appeal with an independent valuation. Banks have an appeal channel. Submit an independent third-party valuation (surveyor or AVM) plus recent comparable transactions, and the bank can re-assess. Success depends on the size of the gap and the strength of the evidence.
Three: consider the Mortgage Insurance Programme. The Mortgage Insurance Programme (run by HKMC Insurance Limited) lets qualifying buyers borrow above the basic loan to value cap with insurance cover, which can bridge part of a valuation shortfall on an eligible self-use purchase. Check current eligibility and premiums with the lender, since terms change.
Four: renegotiate with the seller. If several banks cannot reach your price, the market has spoken. Send the seller your independent valuation and the recent comparables, and ask for a reduction to the level the banks will finance. If they refuse, you choose between funding the gap and walking away.
Five: fund the gap yourself. If the flat is the one you want and the shortfall is small, you can top up the deposit and complete. Do the arithmetic first. Prices fell through 2023 and 2024 and have risen recently, but markets can move either way, so size any top-up against your own risk tolerance, not an assumption that prices keep climbing.
QPV is an independent automated valuation model built for Hong Kong residential property. It is not attached to any bank, so the valuation is a genuine second opinion. The V1 dataset behind the model covers 7,096 Hong Kong residential transactions across 35 plus districts. For a low-valuation situation, QPV gives you three things a bank tool does not.
Note. A QPV report is a model estimate, not a legally binding professional valuation. The bank lending decision rests on the bank own valuation. Valuations for legal proceedings, court matters, or IRD stamp duty must be performed by a surveyor registered with the Hong Kong Institute of Surveyors (HKIS). The QPV role is a supporting second opinion to help you judge whether the bank figure is reasonable.
The bank lends against the lower of the purchase price and its own valuation. At the standard 70 percent loan to value cap, a valuation below your agreed price means the mortgage is calculated on the lower figure, so you fund both your normal deposit and the valuation gap in cash. If you cannot cover the shortfall the purchase can fall through, and you may forfeit your deposit.
Yes. Hong Kong banks run independent valuation systems and the results commonly differ by 5 to 15 percent on the same flat. You can request valuations from three to five banks at once, usually free and within minutes, and use the highest as your mortgage basis. Check the rate, fees, and approval speed at each bank as well, not only the valuation figure.
It can be either. A bank model can lag recent transactions, use the wrong comparables, or apply a risk premium to a specific building. To tell which, compare the same flat against recent transactions in the same building, the district index trend, and an independent third-party valuation. In a rising market, as in mid-2026, a low figure is often a lag artefact rather than a true market drop.
The loan to value cap is applied to the lower of the purchase price and the bank valuation. Since the October 2024 standardisation, the HKMA sets a flat 70 percent LTV on residential property. If the valuation comes in below the price, the 70 percent is taken on the valuation, which is exactly why a low valuation widens the cash you need rather than just trimming the loan. For the full mechanics, see the HKMA LTV guide.
QPV provides an independent second-opinion valuation with a confidence interval and an auditable list of the comparable transactions used. When the bank figure and the QPV figure differ materially, you can use the QPV report as evidence to ask another bank for a fairer valuation, to support an appeal, or to renegotiate with the seller. QPV is a model estimate, not a binding valuation.
QPV produces a quantitative valuation report for Hong Kong residential property, with a confidence interval and an auditable comparable list.