Quick answer
Most HDB upgraders should decide the sequence — sell first or buy first — before viewing any condo. Selling first avoids paying 20% ABSD upfront and bridging debt, but needs interim housing. Buying first avoids moving twice but ties up serious cash. A sell-first upgrade into a resale condo typically takes six to nine months.
Key takeaways
- Your flat must have passed its Minimum Occupation Period (5 years for most flats; 10 for Prime Location flats) before you can sell.
- If you commit to the condo before your flat's sale legally completes, ABSD is payable upfront — 20% for Singapore citizen couples on a second property (July 2026 rates).
- Eligible married couples can get full ABSD remission if the flat is sold within 6 months — but you still front the cash.
- CPF used for your flat is refunded with accrued interest ~2–3 weeks after completion; you can't use it for the condo before then.
- Financing is capped by LTV 75% and TDSR 55%; run the numbers before falling for a showflat.
Step 1: Confirm you can actually sell
Before anything else, check your flat's Minimum Occupation Period. For most flats this is five years from key collection; flats under the Prime Location Public Housing model carry a ten-year MOP. You can confirm your flat's exact MOP status via the HDB Flat Portal.
While you're there, pull three numbers: your outstanding loan balance, the CPF principal you've used, and the accrued interest on it. Together these determine your true proceeds — and I've met more than one family whose "profit" on paper became a much smaller cash figure once the CPF refund was accounted for.
Step 2: Decide the sequence — this is the whole game
Option A: Sell first (the default for most families)
You complete your flat's sale, receive cash and CPF refund, then buy. You never own two properties at once, so ABSD never applies. The cost is convenience: you may need to rent, negotiate an extension of stay with your buyer, or stay with family for a few months.
Option B: Buy first (for those with deep reserves)
You secure the condo before selling. Because you own two properties at the moment of purchase, ABSD applies upfront — at July 2026 rates, that's 20% of the condo price for a Singapore citizen buying a second property. On a $1.6 million condo, that's $320,000 fronted in cash or CPF. Married couples with at least one citizen can apply for full remission if the flat sells within six months, but the outlay comes first, and if your flat takes longer to sell than planned, the remission window becomes a source of real stress. You may also need a bridging loan (typically around 5–7% p.a.) to cover the downpayment gap until your sale proceeds arrive.
One thing that surprises many upgraders: HDB's contra facilities, which let HDB-to-HDB movers offset sale proceeds against the next flat, do not apply when your next home is private property.
Step 3: The money — a worked example
Illustrative figures for a citizen couple in their late 30s, based on a composite of real family cases (details changed). These are round-number illustrations, not quotes — your numbers will differ.
| Item | Amount | Note |
|---|---|---|
| Sale price of 4-room flat (Jurong West) | $620,000 | Illustrative |
| Less outstanding HDB loan | −$180,000 | |
| Less CPF refund incl. accrued interest | −$260,000 | Returns to OA, usable for next purchase after refund |
| Cash proceeds | ≈$180,000 | Before agent and legal fees |
| Target resale condo | $1,450,000 | Illustrative 3-bedroom, west region |
| Max loan at 75% LTV | $1,087,500 | Subject to TDSR 55% at their income |
| Downpayment required (25%) | $362,500 | Min. 5% cash, rest cash/CPF |
| Buyer's Stamp Duty | Payable | Calculate at IRAS calculator for the actual price |
| ABSD (sell-first route) | $0 | Flat sale completed before condo OTP exercised |
With $180,000 cash plus the refunded CPF of $260,000, this couple covers the $362,500 downpayment with buffer for stamp duty and renovation — because they sold first. Had they bought first, they would have needed the downpayment plus $290,000 ABSD upfront before a cent of proceeds arrived.
Step 4: The timeline, month by month (sell-first)
| Month | Milestone |
|---|---|
| Month 0 | Upgrading review: proceeds estimate, affordability, sequence decision. Register Intent to Sell. |
| Month 1–2 | Flat marketed; viewings; secure buyer; grant OTP. Begin condo shortlisting in parallel (viewing, not committing). |
| Month 2–3 | Buyer exercises OTP; resale application submitted to HDB. |
| Month 4–5 | HDB completion (~8 weeks after acceptance). Cash proceeds received; move to interim housing or negotiate temporary extension of stay with your buyer. |
| Month 5 | CPF refund credited (~2–3 weeks after completion). Full war chest confirmed. |
| Month 5–6 | Offer and OTP on the condo; exercise; no ABSD as you own no other property. |
| Month 8–9 | Condo completion (private resale typically ~10–12 weeks from exercise). Collect keys, move in. |
Common mistakes I see
- Falling for a condo before the flat is even listed. Now every decision is rushed and the sequence gets decided by emotion.
- Counting CPF refund as instantly available. It arrives ~2–3 weeks after completion; OTP deadlines don't wait for it.
- Budgeting to the maximum loan. TDSR at 55% is a ceiling, not a target. Stress-test the instalment at a higher rate.
- Ignoring the renovation gap. Resale condos often need work; families forget to budget both money and weeks for it.
- Treating the remission as automatic. ABSD remission has conditions and a six-month clock. If your flat is hard to sell, that clock gets loud.
Frequently asked questions
Cash proceeds: yes, at legal completion. CPF monies: no — they return to your Ordinary Account typically about two to three weeks after completion, and only then can they fund the next purchase.
Married couples with at least one Singapore citizen who buy a second home may apply for full ABSD remission if the first home is sold within six months of purchase (or of TOP/CSC for uncompleted projects). Conditions apply — check the current criteria on the IRAS website before relying on it.
Only if you buy before your sale completes and need the flat's equity for the downpayment. Bridging loans run at roughly 5–7% p.a. until your proceeds arrive. Sell first and you won't need one.
Meaningfully — ECs add income ceilings, the 30% MSR cap on financing, and their own MOP. A new EC also cannot be bought while you still own the flat beyond the allowed window. It deserves its own analysis; message me and we'll run your numbers.
Sources
- IRAS — Additional Buyer's Stamp Duty rates and remission conditions (iras.gov.sg). Accessed 13 July 2026. Confirmed
- MAS — Loan-to-value, TDSR and MSR rules (mas.gov.sg). Accessed 13 July 2026. Confirmed
- HDB / MyNiceHome — Minimum Occupation Period and resale completion timeline (hdb.gov.sg, mynicehome.gov.sg). Accessed 13 July 2026. Confirmed
- CPF Board — CPF refund on property sale (cpf.gov.sg). Accessed 13 July 2026. Confirmed
- Bridging loan interest range (~5–7% p.a.) — market commentary, July 2026. Estimated
- All worked-example prices and proceeds. Illustrative only
Related reading: Selling your HDB flat: process, timeline and costs · Resale condo vs new launch: how to choose
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