Upgrade From HDB to Condo in Singapore (2026): Sell HDB First or Buy Condo First?

It is whether you should sell your HDB first or buy the condo first.

If you've been planning the move from an HDB flat to a condominium, you've probably heard both orders argued. Some owners sell the flat first, others buy the condo first and claim the tax back later.

To put it simply, you can sell your HDB flat first and avoid paying the Additional Buyer's Stamp Duty (ABSD) altogether, or buy the condo first and claim the ABSD back, provided the flat is sold within six months.

Both options work just fine, but the right one for you depends on your cash flow and your willingness to move homes twice.

In this blog post, we'll walk you through the eligibility rules, the two routes, the timeline, and the financing behind them.

When you're ready to put the flat on the market, our step-by-step guide to selling your HDB flat covers the sale itself.

Key takeaways

- Before you start viewing condos, check your HDB flat's five-year Minimum Occupation Period, or MOP. You can only buy a private condo after your MOP is over, so make sure you know your date before you start planning the upgrade. - Selling the flat first means no ABSD outlay at all, but you may need a plan for where to live between the two completions. - A married couple can buy the condo jointly first, pay the 20 per cent ABSD, and claim a full refund if the flat is sold within six months, with no exceptions or extensions. - Your sale proceeds and CPF, or Central Provident Fund, refund are only released at the flat's legal completion, so you might need a bridging loan for the condo downpayment. - The condo loan is capped by the 55 per cent Total Debt Servicing Ratio, or TDSR, and a 75 per cent Loan-to-Value, or LTV, limit, so you'll need to plan for a 25 per cent downpayment with at least 5 per cent in cash.

Can You Buy a Condo While You Still Own Your HDB Flat?

Yes, provided your HDB flat has already cleared its Minimum Occupation Period, or MOP, which is five years for most flats. Before that, you can't buy private residential property or sell the flat.

In addition, at least one owner must be a Singapore Citizen for the household to hold both the flat and the condo. A household of Permanent Residents with no citizen owner must sell the flat within six months of buying the private property.

Sell HDB First or Buy Condo First?

This is probably the biggest decision in your upgrade, and ABSD is the reason. If you are a Singapore Citizen buying your second residential property, you generally pay 20 per cent ABSD.

That bill can be a big one, so the timing of your HDB sale and condo purchase really matters. ABSD is also due within 14 days of signing the agreement, which means you need to have the funds ready when you buy.

Sell the flat first. This is the simpler route if you want to avoid ABSD.

If your HDB sale is completed before you buy the condo, the condo becomes your only residential property, so no ABSD applies.

The catch is the gap between homes. Your HDB sale completion could happen before you get the keys to your new condo, leaving you temporarily without a home.

You can usually bridge that gap with a short extension of stay in the flat you sold or by renting somewhere temporarily. The big advantage is that once your HDB sale is done, you do not have an ABSD deadline hanging over you.

You can take your time with the condo purchase instead of rushing to sell the flat.

Buy the condo first. This route lets you secure your new home before selling your HDB flat, but there is a big catch.

You need to pay the 20 per cent ABSD upfront.

For a married couple, you can then apply for a full ABSD refund if you meet the remission conditions. The condo must be bought in both spouses' names only, at least one spouse must be a Singapore Citizen, and your HDB flat must be sold within six months of buying the condo.

If the condo is still under construction, the six-month clock starts from the date of the Temporary Occupation Permit, or TOP, or the Certificate of Statutory Completion, whichever comes first. Once you sell the flat, you also need to apply for the refund within six months.

There are no extensions, so miss the deadline and the ABSD stays with you.

The big advantage is convenience. You move from your HDB straight into your condo without having to find somewhere temporary.

The downside is having to front a potentially huge ABSD bill. The question worth answering first is whether paying that 20 per cent upfront would put too much pressure on your savings.

If it would, selling first is often the more comfortable option.

The Upgrade Timeline

Once you find a buyer for your flat, HDB takes up to 28 working days to accept the resale application, and completion is typically about eight weeks after acceptance. With the marketing period added, the sell-first plan realistically runs several months.

The Enhanced Contra Facility, which completes a sale and a purchase on the same day, only applies when the next home is another HDB resale flat. For an upgrader, the tools that matter are aligned completion dates, the temporary extension of stay, and bridging finance.

When we line up a sale and a purchase for owners, we set the two completion dates first, because every other arrangement depends on them.

If you sell your HDB first, a temporary extension of stay can let you remain in the flat for up to three months after completion. This can give you some breathing room while you wait for your next home.

But there is an important catch. You need to agree on the extension with your buyer before submitting the resale application.

You cannot add it later, and it is only allowed if your next home is already completed. If your condo is still being built, this option is not available.

You will need somewhere else to stay, so budget for a rental in between. And if the condo is still years away from completion, that temporary gap can be much longer than you expect.

Planning Your Finances

What comes back when your flat sells. When the sale completes, the money first goes towards clearing any outstanding HDB loan.

After that, the CPF amount you used to buy the flat is refunded to your CPF account, including the accrued interest.

If you are below 55, the refund goes back into your Ordinary Account, which means you can use it again towards your condo purchase.

If you are 55 or older, the refund may first be used to top up your Retirement Account. Any remaining amount can then go into your Ordinary Account.

One useful point to remember. If you sell your flat at or above market value, you generally do not need to make a cash top-up for any CPF shortfall.

How much you can borrow. Your bank looks at your overall debt, not just the new condo loan.

Under the Total Debt Servicing Ratio, or TDSR, your total monthly debt repayments cannot exceed 55 per cent of your gross monthly income.

The bank also assesses your new mortgage using a 4 per cent floor rate, rather than simply using the interest rate on your loan package.

For a first bank loan, the Loan-to-Value limit is 75 per cent. That means you need to cover the remaining 25 per cent yourself, with at least 5 per cent paid in cash.

Here is where the timing really matters. If your HDB loan is still outstanding when your condo loan is approved, your LTV could drop to 45 per cent.

In other words, you may need a much bigger upfront payment. If you sell your HDB first, you can generally borrow up to the full 75 per cent.

And unlike your HDB loan, the 30 per cent Mortgage Servicing Ratio does not apply to a private property loan.

Bridging the gap. Sometimes your condo downpayment is due before your HDB sale has completed.

That means the money from your flat sale, including the CPF refund, is not available yet.

This is where a bridging loan can come in. It gives you the funds to cover the gap while you wait for your HDB sale proceeds.

Banks generally expect you to repay the bridging loan within about six months, using the money from your flat sale. The interest rate depends on the bank and the package you take.

When we compare loan packages for upgraders, the bridging loan rate is one of the first things we check. Your bridging loan and condo mortgage will often come from the same bank, so it is worth looking at the total cost rather than just the headline mortgage rate.

Should You Sell or Keep Your HDB Flat?

You can also keep your HDB flat instead of selling it, but the costs can be high.

The biggest cost is usually ABSD. If you buy the condo before selling your HDB flat, you need to pay 20 per cent ABSD upfront.

You can only get that money back if you meet the remission conditions and sell the flat within the required timeframe, which is usually six months.

There are two other costs to watch. Your condo loan may be limited to 45 per cent LTV while your HDB loan is still outstanding, which means you need a much larger upfront payment.

And if you rent out the HDB flat while owning the condo, the flat will be taxed at the higher non-owner-occupier property tax rates.

If the numbers still work after factoring in all three, our guide to buying a second property in Singapore goes through the sums in more detail.

Getting the Order Right

There is no single right order. It really comes down to what works for your finances.

If paying the ABSD upfront would put a strain on your savings, selling your HDB first is usually the safer option. You will need to plan where you will stay in between, but that temporary inconvenience could cost far less than being stuck with a 20 per cent ABSD bill you cannot get back.

If moving twice is the part you really want to avoid, buying the condo first can make sense. But you need a realistic plan to sell your HDB flat within the six-month window.

Miss it, and the ABSD refund may be gone.

We cover the opposite move in our guide to Downgrade From Condo to HDB in Singapore, including the rules, timing and costs to watch when you are moving from private property back to HDB.

Once you have decided which route works for you, we can help you buy a condo and coordinate the purchase while we market your HDB flat for sale.

Still not sure which order makes sense? That is completely normal.

We have helped many owners work through this exact situation, from timing the sale and purchase to working out the financing. Give us a call, and we can talk through the numbers with you.

Frequently Asked Questions

Do I pay ABSD if I sell my HDB flat before buying the condo?

No. If your flat is sold before the condo purchase, the condo is your only residential property and the Additional Buyer's Stamp Duty, or ABSD, doesn't apply.

A sale that is still mid-way when you sign for the condo may still count against you, so check your exact dates before you exercise any option.

How long do I have to sell the flat if I buy the condo first?

You have six months from the date of the condo purchase to sell your HDB flat, where the condo is a completed unit. For a unit that was under construction when you bought it, the six months run from the Temporary Occupation Permit, or TOP, or the Certificate of Statutory Completion, whichever comes first.

Note that this six-month window cannot be extended.

Can I use my CPF savings again after selling the flat?

Yes. After completion, the refund sits in your Ordinary Account and can go towards the condo's downpayment and monthly repayments.

At 55 or older, part of the refund may go to your Retirement Account first, so the amount available for the condo can be smaller.

What happens if the condo isn't ready when my flat sale completes?

If you've bought a completed condo, you can arrange a temporary extension of stay of up to three months with your flat's buyer, as long as it's agreed before the resale application goes in. A condo still under construction doesn't qualify for the extension, so a rental in between is the realistic plan.