The Real Cost of Buying an HDB Flat: Every Fee Explained

The price on the listing is only part of what buying an HDB flat costs. First-timers who budget for the flat but forget the fees around it get an unwelcome surprise at completion. Here is the full cost stack, so nothing catches you out.

The one-off costs at purchase

• Option fee — paid to the seller to secure the Option to Purchase, then counted toward the price.
• Downpayment — the share of price not covered by your loan; payable from CPF (fully, on an HDB loan) or CPF plus cash (on a bank loan).
• Buyer’s Stamp Duty (BSD) — a tax on the purchase price, on a tiered scale; usually payable from CPF.
• Legal / conveyancing fees — for the solicitor handling the transfer; often payable from CPF.
• Valuation fee — for the HDB valuation used to size CPF and loan.
• Agent commission — if you engage a buyer’s agent, paid in cash.

The cost people underestimate: cash-over-valuation

If you agree to pay more than the flat’s HDB valuation, the difference — cash-over-valuation (COV) — must be paid in cash, not CPF or loan. In a hot market this can be significant, which is why the resale price guide matters: overpaying isn’t just a bad deal, it’s a bad cash deal.

And then: renovation and moving

Renovation is a real, cash-heavy cost that varies enormously by flat condition and taste. Budget it honestly alongside furniture and moving. A resale flat in good condition can save tens of thousands here versus one needing a full overhaul — worth weighing when you compare listings.

Grants offset some of this — see the grants guide — but they land in CPF, so keep a separate cash buffer for the fees and reno that CPF can’t cover.

Figures on this page are computed from the current snapshot and update each rebuild. Contains information from data.gov.sg (Singapore Open Data Licence) and OneMap, Singapore Land Authority. This is general information for research, not financial or professional advice.