Can I Buy a Condo If I Still Own My HDB Flat?

Yes, you can buy a condo while keeping your HDB flat, once you have fulfilled the Minimum Occupation Period (MOP). Nothing in the rules forces you to sell. What changes is the cost: you pay Additional Buyer's Stamp Duty (ABSD) on the condo as a second property, and the loan you can borrow depends on whether your HDB flat still has a mortgage attached to it.

That last point surprises most upgraders I speak to. Two households buying the identical $1.5 million condo can need very different amounts of cash, simply because one has paid off their HDB loan and the other has not. Here is how the numbers actually work.

The rule: MOP comes first, then the choice is yours

Every owner and essential occupier of an HDB flat must fulfil the 5-year MOP (10 years for Plus and Prime flats bought from BTO exercises in May 2023 onwards) before acquiring an interest in any private residential property, in Singapore or overseas. This applies to the whole family nucleus, not just the names on the title: if your spouse owns the flat and you are an occupier, you are restricted too, as at October 2026.

Once MOP is satisfied, HDB does not require you to sell, rent out, or vacate the flat before buying a condo. You can own both. The decision to keep the HDB flat, usually to rent it out or house parents, is yours to make, provided you are prepared to pay the stamp duty and financing cost of a second home.

What it costs to keep both: ABSD on your second property

Additional Buyer's Stamp Duty rates have been unchanged since 27 April 2023, so the figures below hold as at October 2026, but always check IRAS for the current schedule before you commit.

For a Singapore Citizen, ABSD is 0% on a first residential property, 20% on a second, and 30% on a third or more. Singapore Permanent Residents pay 5%, 30% and 35% respectively. On a $1.5 million condo bought as your second property, 20% ABSD alone is $300,000, in cash, due within 14 days of exercising the Option to Purchase. You can apply for CPF reimbursement afterwards, within your CPF Withdrawal Limit, but you need the cash upfront first.

Regular Buyer's Stamp Duty (BSD) applies on top, at 1% to 6% on a tiered scale. On the same $1.5 million purchase, BSD works out to roughly $44,600.

The LTV difference few upgraders see coming

The Loan-to-Value (LTV) limit set by MAS depends on how many outstanding housing loans you have when you take the new loan, not on how many properties you own.

• No outstanding housing loan: LTV up to 75%, with a minimum 5% cash downpayment.
• One outstanding housing loan: LTV capped at 45%, with a minimum 25% cash downpayment.
• Two or more outstanding housing loans: LTV capped at 35%, with a minimum 25% cash downpayment.

(Lower caps of 55%, 25% and 15% apply if the loan tenure runs past 30 years, or past age 65, but we will keep this example straightforward.)

So if you have fully paid off your HDB flat, the condo loan counts as your first outstanding housing loan, and you can borrow up to 75%. If your HDB loan is still running, the condo loan is your second, and you are capped at 45%, meaning you must fund well over half the purchase price yourself.

Worked example: the same $1.5 million condo, two paths

Path A: HDB flat fully paid off.

• Loan at 75% LTV: $1,125,000
• Downpayment at 25%: $375,000, of which at least 5% ($75,000) must be cash, the rest can be CPF
• Add ABSD ($300,000) and BSD ($44,600), both effectively cash at the point of payment
• Cash you need to find at the outset: roughly $420,000, with CPF able to cover the remaining downpayment

Path B: HDB loan still outstanding.

• Loan at 45% LTV: $675,000
• Downpayment at 55%: $825,000, of which at least 25% ($375,000) must be cash, the rest CPF or cash
• Add the same ABSD ($300,000) and BSD ($44,600)
• Cash you need to find at the outset: roughly $720,000

The gap between the two paths is about $300,000 in upfront cash, on an identical property. If you are weighing whether to clear your HDB loan before buying a second home, this is the calculation that should drive the decision, not just the interest saved.

[David: add a short real client example here, e.g. an upgrader couple who cleared their HDB loan first specifically to unlock the higher LTV on their condo purchase]

TDSR, not MSR, governs your new loan

Private property loans are assessed only against the Total Debt Servicing Ratio (TDSR), capped at 55% of your gross monthly income, as at October 2026. The 30% Mortgage Servicing Ratio (MSR) only applies to HDB flats and Executive Condominiums, so it does not constrain your condo loan directly. Your bank will still stress-test the new loan together with your existing HDB mortgage (if any) and other debts against that 55% ceiling, so run the numbers with a banker, or with our mortgage calculator, before you make an offer.

Keep both, decouple, or sell: which fits your plan?

There are three honest paths once MOP is behind you, and none of them is automatically "correct":

1. Keep the HDB flat and pay ABSD on the condo. This suits households with strong cash reserves and a genuine use for the flat, such as rental income or housing extended family. We walk through when the rental yield justifies the 20% ABSD in how much condo you can afford while keeping your HDB.
2. Decouple a co-owner off the HDB flat before buying the condo, so the condo becomes that person's first property and avoids ABSD. This has its own costs and eligibility conditions, covered in can you decouple your HDB flat to avoid ABSD.
3. Sell the HDB flat and use the proceeds, including your CPF refund, towards the condo. This frees up the most cash but means giving up the flat and the rental option permanently.

None of these guarantees a better outcome. The right choice depends on your cash position, your family's housing needs, and how committed you are to holding the HDB flat for the long term.

Frequently asked questions

Do I need to sell my HDB flat if I buy a condo?

No. Once you have completed your MOP, HDB does not require you to sell, rent out or vacate your flat before buying private property. The choice to keep it, usually to rent out, is yours, as long as you can fund the ABSD and financing involved.

Can I use CPF to pay the ABSD?

Not directly at the point of payment. ABSD must be paid in cash within 14 days of exercising the Option to Purchase. You can then apply to CPF Board for reimbursement, subject to your CPF Withdrawal Limit, but you need the cash ready first.

What if I haven't completed my MOP yet?

You cannot acquire any interest in private residential property, locally or overseas, until every owner and essential occupier has fulfilled the MOP, which is 5 years for standard flats and 10 years for Plus and Prime flats bought from May 2023 BTO exercises onwards. This applies to your spouse too, even if they are not named on the flat.

Is keeping an HDB flat as a rental property worth paying 20% ABSD?

It depends on the rental yield, the loan you can secure, and how long you intend to hold both properties, so there is no single answer we can give without guaranteed outcomes. It is worth modelling the actual numbers, including the LTV scenario that applies to you, before deciding.

What this means for you

If you are an HDB owner past MOP and considering a condo, the two numbers that decide how much cash you need are your ABSD bracket and whether your HDB loan is still running. Clearing that loan first, where it makes sense for your overall finances, can unlock a materially higher LTV on the new purchase. If you would like to work through your own numbers, including whether keeping, decoupling or selling your flat fits your plan, we can go through it with you against our buying a condo in Singapore framework.