HDB Contra (ECF) Explained 2026: How to Sell and Buy an HDB Flat at the Same Time
The HDB Enhanced Contra Facility (ECF) links the sale of your HDB resale flat to your purchase of another resale flat: the sale completes before or on the same day as the purchase, and your approved sale proceeds and CPF refunds are routed straight into the new flat.
It reduces upfront cash and your loan size — subject to HDB and CPF approval — and it cannot pay your stamp duty or legal fees.
Enhanced Contra Facility generally fits a coordinated HDB resale-to-HDB resale move. This screening result is not HDB approval and your exact financing and transaction structure still need to be checked.
The tool will show whether ECF appears likely, unlikely or not applicable based on the basic transaction structure.
WhatsApp Rick to review this resultNote: This screening result is illustrative and opinion-based — not HDB approval, a valuation, or financial advice. Human error is possible; verify against official portals or your conveyancing lawyer before relying on it.
Table of Contents
What is the HDB Enhanced Contra Facility?
Think of contra as a three-way handshake:
– Group A – your buyer: pays for your current flat.
– Group B – you (the contra party): sell your flat and buy the next one at the same time.
– Group C – the seller of your next flat: receives payment from you.
HDB and the CPF Board route the money so your sale proceeds and CPF refund flow into your purchase
— no waiting for funds to clear, no bridging interest.
The catch is sequencing: your sale must complete before, or on the same day as, your purchase, and the whole arrangement remains subject to HDB’s and CPF’s approval.
That’s why HDB calls it an Enhanced Contra Facility — it enhances your cashflow, not your price.
Buying a new flat instead? That's the Contra Payment Facility
Two schemes share the contra name, and they work differently.
The Enhanced Contra Facility (this guide) is a routing arrangement between two resale transactions — ECF itself is not a loan, and it sits comfortably alongside the HDB housing loan most contra parties take on the purchase.
The Contra Payment Facility applies when you’re collecting keys to a new flat from HDB while selling your existing one — and it’s a genuine additional loan on top of your housing loan, redeemed from your sale’s net proceeds, with interest charged at the HDB housing loan rate.
To qualify for the Contra Payment Facility you must have booked a flat and received the key-collection invitation, applied to sell your existing flat, fully redeemed any bank loan on it, be eligible for and taking an HDB loan on the purchase, and be able to cover the full price with your OA, sale proceeds (you may retain up to S$20,000 of the CPF refund), and maximum HDB loan.
Quick router: next home is a resale flat → ECF. Next home is a new flat from HDB → Contra Payment Facility (taking an HDB loan) or the Temporary Loan Scheme (not taking a housing loan).
Next home is a private condo → contra doesn’t apply; start with Sell HDB, Buy Condo instead.
Who can use the Enhanced Contra Facility?
Per HDB’s ECF terms, your move must check these boxes:
– You’re selling one HDB resale flat and buying another HDB resale flat at the same time.
– Your sale completes before or on the same day as your purchase.
– You’re not an undischarged bankrupt, with no bankruptcy proceedings against you.
– Neither your buyer nor your seller is using a contra facility on their own transaction
— only one party in the chain can.
And to be clear on the point people most often second-guess: taking an HDB housing loan on your purchase is fully compatible with ECF — most contra parties do exactly that.
ECF isn’t reserved for moves where proceeds cover the whole price; the routed CPF and cash offset the purchase, and your HDB loan funds the remainder.
The bank-mortgage reality.
Where either flat carries a financial-institution mortgage, or private solicitors must be engaged, HDB reserves the right not to approve the ECF.
On paper that’s discretion; in practice, plan these cases around a bridging loan and treat ECF approval as the exception rather than the plan.
The same applies to Conversion Scheme and part-share resales. Contra works when it’s a straightforward HDB-to-HDB move with clean financing.
How does the money flow under contra?
ECF reduces upfront strain, but the routing is fixed, in this order:
- All CPF refunded from your sale goes into your new flat first — with the option to keep up to S$20,000 in each buyer’s CPF OA.
- Your cash proceeds are applied next.
- If you’re taking a second HDB loan, you keep the higher of S$25,000 or 50% of your cash proceeds (including the deposit you received) — the rest goes into the purchase and reduces your loan, per HDB’s second-loan rules.
Each household can take at most two HDB housing loans.
What can't contra pay for?
HDB’s explicit ECF restriction: refunded CPF savings and cash proceeds routed under the facility cannot pay stamp duty or legal fees.
These are settled separately — in cash, or from CPF savings where CPF rules allow.
Budget also for the earlier-stage costs that fall outside the routing altogether: the Request for Value fee on the purchase, and the resale application admin fees on both transactions.
Together, the fees contra doesn’t touch commonly run into five figures — the single most common surprise in contra transactions.
Selling at 55 or older? Your CPF refund tops up your Retirement Account first
The rule most contra guides miss, and the one that matters most to right-sizers.
If you are 55 or older when you sell, your CPF housing refund is first used to top up your Retirement Account to your Full Retirement Sum — only the balance stays in your OA for your next flat.
Under ECF, the CPF actually available for Flat B can be meaningfully less than the refund figure you had in mind.
One mitigation worth knowing: RA savings above your Basic Retirement Sum may be usable for the purchase if all of these hold — you’re buying a 3-room or smaller flat, within three years of the sale, at a lower price than the property you sold, you have not been issued a CPF LIFE plan, and sufficient funds remain in your RA.
Check your exact position on the CPF Home Ownership Dashboard before granting any OTP — this one number reshapes the whole plan.
A worked example: how ECF changes the funding you need
Meet a couple selling a 4-room flat at S$550,000 and buying a 5-room at S$650,000 with a second HDB loan.
Assumptions: both buyers below 55; no other OA balance beyond the refund; no housing grant; purchase at valuation (no Cash Over Valuation); their HFE letter supports the required HDB loan; remaining lease and buyer ages do not restrict CPF usage or loan eligibility.
| Step | Item | Amount |
|---|---|---|
| 1 | Sale price of Flat A | S$550,000 |
| 2 | Less outstanding HDB loan | − S$120,000 |
| 3 | Less CPF refund, including principal and accrued interest restored to their CPF Ordinary Accounts | − S$230,000 |
| 4 | Cash proceeds, including the S$5,000 deposit already received | S$200,000 |
Note: These figures are illustrative and opinion-based — not a valuation or financial advice. Human error is possible; verify against official portals, your banker, or your conveyancing lawyer before relying on them.
Taking a second HDB loan, they keep the higher of S$25,000 or 50% of S$200,000 — so S$100,000 cash stays with them, and S$100,000 flows into the purchase.
From the S$230,000 CPF refund, they retain S$20,000 each (S$40,000), applying S$190,000.
| Funding source | Amount |
|---|---|
| CPF applied via ECFS | S$190,000 |
| Cash proceeds applied via ECFS | S$100,000 |
| Remaining amount to be funded, subject to HFE and loan approval | S$360,000 |
Note: These figures are illustrative and opinion-based — not a valuation or financial advice. Human error is possible; verify against official portals, your banker, or your conveyancing lawyer before relying on them. ECFS eligibility, CPF usage, HFE assessment, and loan approval remain subject to the relevant official requirements.
Separately, they prepare S$14,100 in BSD — computed on IRAS’s current residential BSD bands: 1% on the first S$180,000, 2% on the next S$180,000, 3% on the remaining S$290,000 — plus legal and admin fees.
None of this can be paid with contra funds.
These figures are illustrative and opinion-based, produced with calculation tools — not a valuation or financial advice. Human error is possible; verify against official sources before relying on them.
Want your own numbers instead of ours? Run them through the HDB resale calculator.
How long does HDB contra take?
A realistic contra journey runs 3 to 6 months end to end: the marketing period to secure your buyer and your next flat sets the pace, and the HDB mechanics below are the fixed tail.
An extension of stay can add up to 3 months after completion.
The HDB stages themselves — run twice in parallel — are:
– OTP: your buyer has 21 calendar days to exercise, expiring at 4pm on day 21.
– Resale application: you submit by the date both parties agreed in the OTP (there’s no fixed statutory deadline — it’s negotiated, commonly a few weeks after exercise).
Once one party submits their portion, the other must follow within 7 calendar days
— or HDB cancels the application with no refund of fees.
– Acceptance: HDB verifies and notifies acceptance within 28 working days of a complete application.
– Completion: about 8 weeks after acceptance
— the earliest possible date. Under ECF, both completions are scheduled together, sale first or same day.
For the full stage-by-stage walkthrough of a standard resale sale, see the HDB resale process guide.
Enter the OTP grant date and your estimated HDB acceptance date. The tool uses approximately eight weeks from acceptance as a planning estimate for the earliest completion window. Your actual dates remain subject to HDB’s scheduling and approval.
The buyer’s Option to Purchase period and the wider sell-buy coordination begin here.
Use HDB’s actual acceptance notice when available. Do not treat a projected date as confirmed.
This is calculated as approximately eight weeks after the selected acceptance date. Under ECF, the sale must complete before or on the same day as the purchase.
A Temporary Extension of Stay can run for up to three months and ends automatically. The actual arrangement must be agreed and declared correctly.
Note: These dates and figures are illustrative and opinion-based — not a valuation or financial advice. Human error is possible; verify against official portals, your banker, or your conveyancing lawyer before relying on them.
Check my sell-buy timeline with RickCan I stay in my flat after completion? (Temporary Extension of Stay)
Yes — if your buyer agrees, a Temporary Extension of Stay of up to 3 months after completion is possible.
It ends automatically, with no further extension.
Three conditions: you must already have committed to a completed property (exercised OTP or signed S&P) at the time of the resale application; under ECF only the contra party can request it; and both parties state the arrangement in their resale application portions (the buyer pays a S$20 admin fee).
Who pays what during the extension — this is where most guides are out of date.
From completion day, your buyer is the legal owner and pays the ownership costs: their loan instalments, service & conservancy charges (without rebates), and property tax — at non-owner-occupied rates during the extension.
You can privately agree on compensation from you to them; put it in writing, because HDB will not mediate disputes.
The buyer’s MOP clock also only starts after your extension ends — which is exactly why some buyers hesitate to grant one. Respect that, and negotiate it upfront.
What happens if the contra chain breaks?
The question almost no guide answers, and the one that decides whether contra feels safe. Under HDB’s ECF terms and conditions, HDB may withhold consent to, vary or cancel the facility — and if the sale of your current flat is delayed, aborted, or not completed, the consequences are specific:
– You must replace the money. The purchase was being funded by your sale; if that funding falls away, the monies still have to come from you.
– If your purchase completion date is already fixed, you can be given 10 days’ notice to pay all monies required to complete the purchase.
– HDB may reschedule the completion dates of both flats.
And upstream of all that: if your buyer never exercises the OTP, you keep the option fee but the contra funding behind your purchase is gone; if the second application portion misses the 7-day window, HDB cancels that application and the contra link with it.
Be careful with the common reassurances here.
A bridging loan is not guaranteed — it needs bank approval on its own timeline.
A deferred completion needs your seller’s written agreement, which they may not give. Neither is a safety net you can assume; both are contingencies you arrange before you need them.
The real protection is sequencing: secure your sale OTP first, align both applications, and only commit to the purchase once the sale side is solid.
ECF vs Contra Payment Facility vs TLS vs bridging — which route fits?
Which route fits depends on whether your next home is another HDB resale flat or a new flat from HDB, and whether HDB or bank financing is involved. The Enhanced Contra Facility (ECF) covers resale-to-resale. The Contra Payment Facility and Temporary Loan Scheme apply to new HDB flats. A bank bridging loan covers bank-financed moves.
| Route | Best for | How it works | Cost profile |
|---|---|---|---|
| Enhanced Contra Facility (ECF) | HDB resale → HDB resale | Sale proceeds and refunded CPF savings are routed by HDB and CPF Board into the next resale-flat purchase. ECF is not itself a loan and can work alongside an approved HDB housing loan. Read HDB’s Enhanced Contra Facility conditions . | No bridging-loan interest. Stamp duty, legal fees and administrative charges still need to be prepared separately. |
| Contra Payment Facility | New flat from HDB, while taking an HDB housing loan | An additional loan is provided on top of the HDB housing loan and is redeemed from the net proceeds of the existing flat’s sale. See HDB’s Contra Payment Facility conditions . | Interest is charged at the applicable HDB housing-loan rate. |
| Temporary Loan Scheme (TLS) | New flat from HDB, without taking a housing loan | A short-term loan may be provided up to the applicable net sale proceeds. It does not cover the required downpayment. Check HDB’s Temporary Loan Scheme conditions . | Interest is charged at HDB’s prevailing non-concessionary rate. |
| Bank bridging loan | Bank financing or private solicitors are involved | Short-term bank credit supports the purchase while you wait for sale proceeds or CPF housing refunds to become available. Review CPF Board’s guidance on buying while awaiting a CPF refund . | Bank interest and fees apply. Terms, approval and repayment conditions vary between financial institutions. |
Note: This comparison is general information. Scheme eligibility, interest treatment, loan approval and legal arrangements should be verified with HDB, CPF Board, your banker and your conveyancing lawyer. This is not financial advice.
Real-world contra scenarios
Right-sizing to be near the kids. Mr and Mrs Tan sold their 5-room and bought a 3-room near their married children — no bridging interest, and a 2-month extension of stay negotiated upfront, with written terms compensating the buyer’s non-owner-occupied property tax.
Prepare: extension terms in writing, CPF refund routing, moving timeline.
Nearing retirement, cashflow first. At 58, Mdm Wong right-sized with ECF — but because she was over 55, her CPF refund first topped up her Retirement Account to the Full Retirement Sum, leaving less in her OA for the new flat than she’d assumed.
She checked her exact figure on the CPF Home Ownership Dashboard, adjusted her budget, and set BSD aside in cash before granting her OTP.
Prepare: the RA top-up check, BSD in cash, timeline planning.
Common misconceptions about HDB contra
“Contra means no cash needed.” Contra reduces upfront cash — it doesn’t eliminate it. BSD, legal, valuation and application fees still need cash or eligible CPF savings, and any Cash Over Valuation is cash-only.
“I can use all my sale proceeds however I like.” The routing is fixed: CPF refunds into the new flat first, then cash proceeds — and on a second HDB loan, the retention rule above decides how much cash stays with you.
“Contra lets me skip the CPF refund.” No. The full CPF principal plus accrued interest is refunded on every sale — contra simply channels that restored retirement money straight into your next flat instead of parking it first.
“Contra is automatic.” It must be requested — declared in both resale applications, with the contra party submitting two sets. Forget to declare it and you’re on the standard two-transaction cash timeline.
“A high selling price guarantees cash back.” Cash proceeds are what’s left after the outstanding loan and full CPF refund. Long-held flats with heavy CPF usage can sell high and still return modest cash — check your Home Ownership Dashboard figure before you plan around it.
About the author
Rick Long is an Associate Senior Division Director at Huttons Asia.
Through YouHome.sg — Right Property Matters — he shares the frameworks, tools and field experience behind his advisory work, helping Singapore buyers and sellers across HDB, EC and private residential decisions with structured, calm, next-step guidance.
CEA Reg. R026818Z · Huttons Asia · YouHome.sg
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Before you make your move
The Enhanced Contra Facility is one of the most effective ways to manage an HDB resale-to-resale move — when the sequence is right.
HFE letter first. OTPs aligned. Resale applications submitted on the agreed dates — second portion within 7 days of the first — with ECF declared.
Here’s the reality: once you grant or accept an OTP, you’ve locked in terms that may not suit your cashflow or loan profile. By then, options narrow — and mistakes cost real money.
The smartest step is planning before execution.
In one conversation, we can map your likely cash-to-prepare, stress-test your timeline against HDB’s rules, and decide whether ECF is the right fit before you commit.
That’s how you protect your position and avoid costly surprises.
Rick will confirm the session with you directly on WhatsApp.
If WhatsApp didn't open, tap here
Disclaimer: The case studies and information are for educational use only and i make no representation or guarantees with respect to the accuracy, applicability, or completeness of its contents. There shall be no liability for any loss or expense whatsoever, relating to investment decisions made by the reader.
Frequently asked questions about HDB contra
These answers cover the main Enhanced Contra Facility process, financing and completion questions. Approval and financial treatment still depend on HDB, CPF Board, IRAS and the facts of each transaction.
What is the HDB Enhanced Contra Facility?
The Enhanced Contra Facility is an arrangement by HDB and CPF Board that lets you sell one HDB flat and buy another resale HDB flat as linked transactions. Approved sale proceeds and refunded CPF savings are applied directly to the purchase. This can reduce the upfront cash and housing loan required. The sale must complete before or on the same day as the purchase, subject to HDB and CPF approval.
How do I apply for the ECF?
State the ECF request in your resale applications through My Flat Dashboard. As the contra party, you submit the seller’s portion for the flat you are selling and the buyer’s portion for the flat you are purchasing. Your salesperson may also submit the applications through HDB’s e-Resale system or Estate Agent Toolkit on your behalf.
Can I use contra if I am taking a bank loan?
Where either transaction involves a bank mortgage or private solicitors, HDB reserves the right not to approve the ECF. Plan these cases around a possible bridging loan instead of assuming contra will be available. A straightforward HDB-managed transaction using an HDB housing loan or no housing loan is generally the cleaner structure, but approval is never automatic.
How long does HDB contra take?
Plan for roughly three to six months from marketing to completion. The timeline includes finding a buyer and your next flat, the 21-calendar-day Option to Purchase period, coordinated resale-application submissions and approximately eight weeks from HDB’s acceptance to completion. Once one party submits an application portion, the other generally has seven calendar days to follow. A Temporary Extension of Stay may add up to three months after completion. The eight-week period is only the HDB processing tail, not the full sell-buy journey.
Does buying under ECF help me avoid ABSD?
ECF itself is not an Additional Buyer’s Stamp Duty concession. It only coordinates the payment flow. Separately, qualifying HDB purchases may receive remission under IRAS rules. Under IRAS’s remission conditions for HDB acquisitions, ABSD is fully remitted where at least one purchaser is a Singapore Citizen, and reduced to a 5% rate for an all-Singapore Permanent Resident household. Buyer’s Stamp Duty remains payable and cannot be paid using funds routed under ECF. Check IRAS’s current HDB acquisition remission conditions.
If I take a second HDB loan, how much cash can I keep?
HDB’s stated requirement is that you may retain the higher of S$25,000 or 50% of your cash proceeds, including the deposit received. The remaining required cash proceeds and CPF refund are applied towards the purchase to reduce the second HDB housing loan. A household may take no more than two HDB housing loans.
Who pays property tax during the extension of stay?
The buyer becomes the legal owner from completion and pays the property tax at the applicable non-owner-occupied rate during the extension. The buyer also pays service and conservancy charges without owner-occupier rebates. You may privately agree to compensate the buyer, but the amount and payment terms should be recorded in writing before the Option to Purchase is granted because HDB does not mediate private compensation disputes.
Note: Rules, rates, timelines and approval conditions should be checked against the current HDB, CPF Board and IRAS portals before you act. This is general information, not legal, tax, loan or financial advice.
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