HDB to Private Property Upgrade Guide Singapore 2026: Rules, Costs and Timeline

To upgrade from an HDB flat to a private home, you must first finish the flat's Minimum Occupation Period (MOP): 5 years, or 10 for Plus, Prime and PLH flats. Sell first and a Singapore Citizen pays 0% ABSD. Buy first and you pay 20%, which a married couple buying jointly can get refunded if the flat is sold within 6 months.

Updated 27 September 2026. Rates and rules are checked against IRAS, MAS, CPF Board and HDB as of this date. To model your own numbers, use our HDB upgrader calculator.

When can you buy a private property as an HDB owner?

You, your spouse and the flat's occupiers cannot buy a private residential property until the flat's MOP is over. The MOP is:

The MOP counts from the date you collect the keys (for a resale flat, from resale completion). Check your flat's MOP date on HDB's My Flat Dashboard. When you sell a Plus, Prime or PLH flat, HDB also recovers part of the subsidy as a percentage of the resale price or valuation, whichever is higher, so budget for this in your sale proceeds.

Once the MOP is over you may buy a private home and keep your flat, but the ABSD rules below then apply.

Do you pay ABSD if you buy before selling your HDB flat?

Yes. An HDB flat counts as a residential property, so a condo bought while you still own it is your second property. IRAS's ABSD rates (in force since 27 April 2023):

Joint buyers pay the highest rate that applies to any of them, on the whole price.

Married-couple refund. A married couple with at least one Singapore Citizen who buy the new home jointly, in their two names only, can get the 20% ABSD refunded if they sell their first home within 6 months of:

• the purchase date, for a completed property; or
• the TOP or CSC date, whichever is earlier, for a new launch bought uncompleted.

The couple pays the ABSD within the normal 14-day deadline, then applies to IRAS for the refund after the sale. IRAS says it will not extend the 6-month deadline and suggests securing a buyer for the first home before buying the next one. Singles and non-married co-buyers have no equivalent refund.

On a S$1.5 million condo, 20% ABSD is S$300,000 paid up front, so the timing needs to be planned before you commit to either transaction.

What costs should you budget for?

Selling your HDB flat

Buying the private property (example: S$1.5 million, Singapore Citizen who has sold the flat)

BSD working (IRAS tiers): 1% of the first S$180,000 (S$1,800) + 2% of the next S$180,000 (S$3,600) + 3% of the next S$640,000 (S$19,200) + 4% of the next S$500,000 (S$20,000) = S$44,600. BSD and ABSD are due within 14 days of exercising the option or signing the contract. Our stamp duty calculator works it out for any price.

If you later sell the private home within 4 years of buying it (for purchases from 4 July 2025), Seller's Stamp Duty of 4% to 16% applies. See our SSD guide.

How does the CPF refund work when you sell your HDB flat?

When you sell, the CPF you used for the flat (down payment, monthly instalments and stamp duty) must go back to your CPF account, plus the accrued interest: the interest that money would have earned in your Ordinary Account, currently 2.5% a year. CPF Board says:

• The refund goes into your Ordinary Account, and you can use it for your next home. If you are 55 or older, it first tops up your Retirement Account to your required retirement sum, and any balance goes to your Ordinary Account.
• If the sale price is too low to cover the loan and the full refund, you only refund the sale price minus the loan, with no cash top-up needed, as long as the flat is sold at market value.

Worked example (our estimate). You bought 7 years ago, using S$80,000 of CPF for the down payment, then S$120,000 of CPF for instalments spread evenly over the 7 years.

• Accrued interest on the S$80,000: 80,000 × (1.025^7 − 1) ≈ S$15,100
• Accrued interest on the instalments (each compounded from the month it was paid): ≈ S$11,000
• Total refund ≈ S$200,000 + S$26,100 = about S$226,100

This is our approximation. CPF Board's statement for your flat gives the exact figure. The money is not lost, but it comes back as CPF, not cash, and CPF use for a private home is capped by the CPF withdrawal limits. See our CPF usage limits guide.

How much can you borrow: TDSR, MSR and LTV?

TDSR (55%). Under MAS rules, all your monthly debt repayments, including the new mortgage, car and personal loans, cannot exceed 55% of gross monthly income. Banks must calculate the mortgage at the higher of a 4% medium-term interest rate floor or the loan's actual "thereafter" rate, not at the rate you actually pay.

MSR (30%) applies to HDB flats and to ECs bought from the developer. It does not apply to a private condo loan.

LTV. The loan limit depends on how many housing loans you have outstanding, not how many properties you own:

These limits drop (to 55%, 25% and 15%) if the tenure is over 30 years or the loan runs past age 65. So buying before your HDB loan is repaid can cut your loan from 75% to 45%. See our LTV guide.

Example (our estimate). A S$1.125 million loan (75% of S$1.5 million) over 30 years, assessed at the 4% floor, works out to about S$5,371 a month. With no other debts, that needs gross monthly income of at least S$9,766 (5,371 ÷ 0.55) to pass TDSR.

How long does the HDB sale take?

HDB's resale process sets several fixed steps:

1. Register an Intent to Sell on HDB's resale portal. You must do this at least 7 days before you can grant an Option to Purchase (OTP).
2. Grant the OTP. The option fee is S$1 to S$1,000, agreed with the buyer. The buyer has 21 calendar days to exercise it.
3. Request for Value. The buyer requests HDB's valuation after the OTP is granted. You do not need a valuation before listing.
4. Resale application. After the OTP is exercised, you and the buyer must submit the resale application within 7 calendar days, or HDB cancels it.
5. Completion. HDB says the process takes about 8 weeks from its acceptance of the application to completion.

For the private purchase, a resale condo usually completes some weeks after the OTP is exercised, as set out in the contract. A new launch completes only at TOP, often several years away. That longer window can help a married couple meet the 6-month ABSD refund deadline, because it runs from TOP or CSC.

Which order should you do it in?

Neither order is right for everyone. The trade-offs:

Common mistakes to avoid

• Counting the sale price as cash. Your cash is the sale price minus the loan and the CPF refund. The CPF part can be reused, but only within CPF limits, and at least 5% of the new price must be cash.
• Missing the ABSD refund deadline. IRAS will not extend the 6 months, and the refund only applies to a married couple buying jointly with at least one Singapore Citizen.
• Budgeting at today's mortgage rate. TDSR is tested at 4% or more, whatever rate your bank offers.
• Assuming a school is "within 1 km". For Primary 1, MOE gives priority to Singapore Citizens living within 1 km, then 1 to 2 km, when a phase is oversubscribed, with a 30-month stay requirement. Check the exact distance on OneMap.

Can you keep one property and buy another?

If you already own a private home jointly and want a second one, some couples consider decoupling, where one spouse sells their share to the other. It involves BSD on the share, possible SSD, a CPF refund and IRAS anti-avoidance rules. See our decoupling guide.

FAQ

Can I buy a condo before my HDB MOP ends? No. You, your spouse and the flat's occupiers cannot buy private residential property until the MOP ends: 5 years for most flats, 10 years for Plus, Prime and PLH flats.

Do I have to pay 20% ABSD if I buy a condo before selling my HDB flat? Yes, if you are a Singapore Citizen buying a second residential property. A married couple with at least one Singapore Citizen buying jointly can get it refunded if they sell the flat within 6 months of the purchase date (completed property) or of TOP/CSC (uncompleted property).

How much CPF do I have to refund when I sell my HDB flat? All the CPF you used for the flat, plus the accrued interest it would have earned at the Ordinary Account rate (currently 2.5% a year). If the sale price does not cover the loan and the full refund, you refund only the sale price minus the loan, provided the flat is sold at market value.

Does MSR apply when I buy a private condo? No. MSR (30%) applies to HDB flats and ECs bought from the developer. A private condo bank loan is tested only against TDSR (55%), using at least a 4% interest rate.

How long does an HDB resale take? HDB says about 8 weeks from its acceptance of the resale application to completion. Before that, the Intent to Sell must be registered at least 7 days before the OTP is granted, and the buyer has 21 days to exercise the OTP.

Sources

• IRAS, Additional Buyer's Stamp Duty (ABSD): iras.gov.sg
• IRAS, Remission of ABSD for a married couple: iras.gov.sg, and IRAS factsheet (updated 27 April 2023): iras.gov.sg (PDF)
• IRAS, Buyer's Stamp Duty (BSD): iras.gov.sg
• MAS, SSD holding period extension, July 2025: mas.gov.sg
• MAS, Calculating TDSR: mas.gov.sg; MSR and TDSR rules: mas.gov.sg; Loan tenure and LTV limits: mas.gov.sg
• CPF Board, CPF refund when selling or transferring property: cpf.gov.sg
• HDB, Option to Purchase (resale): hdb.gov.sg; resale application process: hdb.gov.sg
• HDB, October 2024 BTO exercise under the new flat classification framework: hdb.gov.sg
• HDB, New Plus housing model (press release, 20 August 2023): hdb.gov.sg
• CEA, Buying or selling with a property agent: cea.gov.sg
• MOE, P1 registration: home-school distance: moe.gov.sg