HDB Enhanced Contra Facility (ECF) 2025: The Complete, Step-by-Step Guide for Second-Time Buyers and Upgraders
This expert guide explains the Enhanced Contra Facility (commonly called “HDB Contra”), how it actually works in practice, who qualifies, where the pitfalls are, and how to execute a smooth sell-and-buy on the same day. It includes a step-by-step playbook, worked examples, comparison tables, pro tips, key takeaways, and an extended FAQ.
What ECF does: Lets you sell your existing HDB flat (Flat A) and buy another HDB resale flat (Flat B) using your sale cash proceeds and the CPF monies refunded from the sale, so your cash outlay and new mortgage can be reduced.
Best for: Owners who need the sale funds to complete the purchase and want same-day completion to avoid bridging loans or temporary housing.
Core constraints: Only one party in the three-party chain (your buyer, you, your seller) can use ECF. ECF funds cannot pay buyer’s stamp duty or conveyancing fees. There are also loan/solicitor limitations—see “Eligibility & Limits.”
Timeline advantage: ECF can compress sell-and-buy into one completion date, eliminating the usual ~1 month gap between sale completion (refund to CPF) and reuse of funds for purchase.
Preparation is everything: Start with your HFE Letter, map your cashflow, and pre-align three parties on dates. Missing any one of these is the most common reason deals slip.
Parties involved:
Party A buys your current flat (Flat A).
You (Party B) sell Flat A to Party A and buy Flat B from Party C on the same day (or with sale completing before purchase on the same day).
Funds route: The cash proceeds + CPF refund from your sale are immediately channelled into your purchase, reducing cash needed and lowering your loan (or even eliminating it, if sufficient).
Why this helps: Without ECF, your CPF refund typically takes weeks to be available for your purchase, forcing a gap between sale and buy. With ECF, that gap is removed.
Use this quick checklist before you plan the move:
You’re selling an HDB flat (Flat A) and buying an HDB resale flat (Flat B).
Only the contra party (you) may apply. Your buyer (of Flat A) and your seller (of Flat B) cannot also be using a contra facility at the same time.
Completion order: The sale of Flat A must complete before or on the same day as the purchase of Flat B.
Bankruptcy: You must not be an undischarged bankrupt, and there must be no bankruptcy proceedings against you.
Loans/solicitors caveats: Where there is a mortgage in favour of a financial institution on Flat A or Flat B, or where private solicitors must be engaged, approval is at HDB’s discretion (and may be declined). If your purchase uses a bank loan, ECF is typically not available.
Not applicable to: Conversion Scheme, sale of part-share, and certain other special cases.
Fees you still pay separately: Buyer’s Stamp Duty and conveyancing/legal fees cannot be paid with ECF funds (i.e., not from your refunded CPF from Flat A or the ECF cash flow).
Second HDB loan users: If you’re taking a second HDB loan, be prepared that at least 50% of your cash proceeds from the sale may need to be used towards the next purchase before the loan is disbursed.
Benefit highlight: Meeting eligibility lets you recycle your sale proceeds instantly, potentially cutting your new loan size and monthly instalments, while avoiding a bridging loan and interim rental.
Get your HFE Letter (Housing & Development Board’s consolidated assessment) to know your loan and grant eligibility and to ensure you’re procedurally ready before committing to any OTP.
Build a cashflow sheet: Include sale price scenarios, outstanding loan, CPF refund (principal + accrued interest), buyer’s stamp duty for your purchase, conveyancing fees, valuation fees (if any), and a buffer.
Check the ECF constraints above based on your sale and purchase structure.
Example:
If your estimated sale proceeds after clearing the outstanding loan are $220,000 and the CPF refund is $180,000, plan how much of that $400,000 total you’ll need for your purchase downpayment and how much can reduce your new loan.
Register intent to sell on the HDB portal and prepare marketing.
Pricing strategy: Use the last 6–12 months of nearby transactions to anchor your ask.
Marketing best practices: Professional photos, floor plan, clear listing copy, and prompt responses.
Benefit: Strong marketing shortens time-to-OTP, which is critical when you need a clean timeline across three parties.
Use HDB’s prescribed OTP for resale transactions.
Option fee can be collected (up to the HDB cap).
Validity: Typically 21 days for the buyer to exercise. The combined option + exercise fees are capped (check current caps).
Negotiate dates early: Pre-align likely completion date to match your onward purchase.
Tip: Don’t grant OTP until your target purchase is realistic and your timeline can align. You’ll need both deals to dovetail for ECF.
Register intent to buy and begin viewings.
Shortlist units that are ECF-friendly (cooperative sellers, flexible dates, no complex legal caveats).
Example:
A seller who is also buying elsewhere without ECF is often the easiest pairing for your contra chain.
Obtain OTP from the seller of Flat B with dates aligned to your sale.
Confirm how the seller is financing their own move (avoid sellers who also need ECF if you are the contra party; only one party can use it).
All parties submit their respective resale applications on HDB’s portal as agreed.
You (Party B) indicate that you are applying for ECF in your application.
Watch your portal for approval notices and document endorsement windows.
Cooperate with valuation access (if needed) and HDB’s technical inspection to check for illegal works.
Prepare renovation approvals and ensure easy access to all areas.
Fix minor defects early to avoid re-inspection delays.
Endorse all documents by the stipulated deadlines.
Confirm the same-day completion sequence: sell Flat A first, then buy Flat B.
Morning: Complete the sale of Flat A; proceeds and CPF refund are channelled immediately.
Same day (later): Complete the purchase of Flat B using ECF.
Handover keys, settle outstanding fees, and ensure utilities/town council matters are closed/opened as needed.
Benefit: You avoid interim rent/bridging loans and move once.
Sell Flat A at: $700,000
Outstanding loan (A): $200,000
Net cash proceeds: $200,000
CPF refund: $280,000
Total available via ECF: $480,000
Buy Flat B at: $650,000
BSD + legal: Paid separately (not from ECF funds).
Downpayment funded by ECF: $480,000
New loan needed: $170,000 (instead of ~$500,000 without ECF)
Highlight: Monthly instalments drop significantly because the ECF funds replace a large chunk of loan principal.
Without ECF you might wait ~1 month between sale and purchase (CPF refund cycles). With ECF, both transactions complete on the same day, so you can hand over keys and collect keys sequentially—no storage or short-term rent required.
| Approach | Cash Outlay | Loan Size | Timeline Gap | Fees | Admin Complexity | Best For |
|---|---|---|---|---|---|---|
| ECF (Contra) | Low (reuses sale proceeds + CPF refund) | Lower | None (same day) | Normal buyer fees (BSD/legal) still payable | Medium (3-party coordination) | Owners who need sale funds for purchase and prefer 1-move |
| Bridging Loan | Medium (loan fees/interest) | Same as without ECF | None | Extra interest/fees | Medium | Owners who want same-day but can’t use ECF |
| Sell → Then Buy | Low (after sale) | Lower | Yes (~1 month+) | Normal | Low | Owners with flexible housing between transactions |
| Buy → Then Sell | High (two properties temporarily) | Higher | None | Potential ABSD (if applicable), higher risk | High | Owners with strong cash flow and risk tolerance |
Key takeaway: ECF combines low cash outlay with no timeline gap, avoiding bridging interest—but eligibility and chain coordination must line up.
Not securing the HFE Letter early—buyers must have eligibility clear before committing to OTPs.
Assuming all CPF can be used for everything—ECF funds cannot pay stamp duty or conveyancing; plan separate cash or non-ECF CPF OA.
Letting multiple parties attempt contra—only one contra party is permitted in the chain.
Forgetting solicitor/loan constraints—private solicitors or bank-loan structures may lead to rejection.
Loose date alignment—misaligned OTP/endorsement/completion windows are the #1 cause of delays.
HFE Letter in hand (loan/grant/eligibility confirmed).
Cashflow computed (sale proceeds, CPF refund, BSD, legal, buffers).
Confirm ECF eligibility (you are the only contra party; completion order feasible).
Intent to Sell registered; launch marketing.
Secure OTP on Flat A (clear timelines, 21-day validity, deposits within caps).
Intent to Buy registered; shortlist Flat B.
Secure OTP on Flat B (align completion date same day as Flat A sale).
Submit joint resale applications; indicate ECF.
Prepare valuation/inspection; ensure access and docs.
Endorse resale documents by the stated deadlines.
Confirm completion schedule (sell first, then buy same day).
Completion day logistics (utilities, keys, movers, SP/Town Council).
Single-day, two-appointment plan: Book the sale completion in the morning and the purchase completion in the afternoon; share the plan with all parties early.
Buffer for BSD/legal: Keep a separate cash/CPF buffer since ECF funds cannot cover these.
Pre-agree extensions (if needed): A short post-completion extension (with proper documentation) can help with renovation/move timing if the dates can’t be perfect.
Document vault: Keep HFE, OTPs, approvals, renovation permits, and invoices in one shared folder to respond quickly to checks.
Second HDB loan users: Remember the 50% cash-proceeds usage requirement before the loan is disbursed.
What exactly is ECF?
A facility that lets you use sale cash proceeds + CPF refund from your current HDB sale to fund your next HDB resale purchase—often enabling same-day completion.
Who can apply for ECF?
The contra party—the person who is both selling and buying—provided other parties in the chain are not using a contra facility.
Can buyer’s stamp duty be paid using ECF funds?
No. ECF funds (refunded CPF and sale proceeds channeled via ECF) cannot be used for stamp duty or conveyancing. Plan a separate cash/CPF OA buffer.
Can I take a bank loan and still use ECF?
Typically no. If your purchase is financed by a bank loan, ECF is generally not available.
Do I need the HFE Letter?
Yes. Obtain the HFE Letter early to know your loan/grant/eligibility and to keep the process smooth.
Can more than one party use ECF in the same chain?
No. Only one contra party is permitted across the three parties.
Must my sale complete before my purchase on the same day?
Yes. The sale of Flat A should complete before or on the same day as the purchase of Flat B.
How long is the OTP validity?
The HDB resale OTP is typically 21 days. Use this window to coordinate valuation/financing and align dates.
What are the deposit caps?
The combined option + exercise amounts are capped by HDB rules; keep within current caps stated in the OTP notes.
Can ECF eliminate my new loan entirely?
If your sale proceeds + CPF refund are sufficient, your new loan can be sized down or even be unnecessary.
Is there a fee to use ECF?
No separate ECF fee. You still pay standard buyer’s stamp duty and legal fees.
What if valuation comes in below purchase price?
You must top up the shortfall in cash. ECF does not change valuation rules.
Can I use private solicitors?
Where private solicitors must be engaged (or where there are certain mortgages/charges), HDB may decline ECF. Clarify early.
Is ECF available for part-share purchases or Conversion Scheme?
No. ECF is generally not available for these.
What if my buyer also needs ECF?
Then you cannot use it. Only one contra can be in the chain.
How do I pick completion dates?
Work backwards from practical move/reno needs. Book your sale in the morning, purchase in the afternoon. Align all three parties early.
Do I still need an HDB valuation?
If the buyer or you need to use CPF or a loan, a valuation is typically required. ECF does not remove valuation requirements.
Can I use ECF if my current flat has a bank loan?
If there’s a mortgage to a financial institution, ECF approval is at HDB’s discretion and may be declined. Check feasibility early.
Does ECF change my eligibility for CPF grants?
No. ECF manages cashflow, not grant eligibility. Your HFE Letter sets out grant eligibility.
How long does the entire process take?
From OTPs to completion is typically ~8 weeks after resale application acceptance, provided documents/inspections are on time.
Can I request an extension of stay when using ECF?
It’s separate from ECF. If needed, negotiate a post-completion extension with your buyer (within HDB rules).
Can ECF be used if I’m buying without any loan?
Yes, provided other conditions are met; ECF will channel sale proceeds + CPF refund into your purchase.
What happens if approvals are delayed?
Your completion dates may shift. Keep all documents ready and respond promptly to avoid delays.
Do I need to indicate ECF in the resale application?
Yes. You must declare your intention to use ECF during the resale application process.
What if I already submitted my resale application and forgot to indicate ECF?
You may be able to submit an ECF request separately—act immediately and check the portal instructions.
Can I use ECF if I am buying a new flat (BTO) from HDB?
That is a different facility (the “Contra Facility” for new flats). ECF applies to resale flat purchases.
If I’m on my second HDB loan, what should I plan for?
Be prepared to use at least 50% of your cash sale proceeds before your second HDB loan is disbursed.
Does ECF change stamp duty rates or tax?
No. Stamp duty rules are independent of ECF; plan for BSD (and ABSD where applicable).
Can I still renovate immediately after purchase?
Yes, once you’ve completed and collected keys—many ECF users plan same-day for swift move/reno.
What’s the biggest risk with ECF?
Scheduling and eligibility mis-alignment across three parties. Solve with early HFE, clear cashflow, and firm date coordination.
Shortlist ECF-friendly sellers (no contra on their side, open to same-day schedule).
Time your OTPs so the exercise and application windows overlap smoothly.
Lock in movers/utilities for completion day in advance.
Keep all parties on one timeline doc (dates for OTP, exercise, application, endorsement, inspection, completion).
Have a BSD/legal buffer ready outside ECF.
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