Most guides to older HDB flats repeat the same two claims: that lease decay destroys value, and that you should avoid anything under 60 years. Both are too blunt to act on.
This guide does two things instead. It states the financing rules as they stand today, from HDB and the CPF Board. Then it checks the price question against 978,299 HDB resale transactions from 1990 to September 2026 — the full public record — rather than against received wisdom.
The rules that actually bind
Three rules decide whether an older flat is buyable for you. None of them is a hard cutoff, which is the first thing most guides get wrong.
1. The age-95 test
This is the rule that matters most, and it is not about the flat. It is about you.
If the flat's remaining lease covers the youngest buyer until age 95, you get full entitlement: CPF usage is capped at the lower of purchase price or valuation, and your HDB loan is not pro-rated.
If it does not, both your CPF usage and your HDB loan are pro-rated. You are not blocked from buying. You simply have to bring more cash.
CPF Board does not publish the pro-ration formula and directs buyers to its own housing usage calculator for the exact figure. Their worked example: two 25-year-old buyers, a flat with 65 years left, a $550,000 price — up to $495,000 of CPF, because the lease runs out when they are 90.
2. The 20-year floor
Below 20 years of remaining lease, no CPF may be used at all. Above it, pro-rated CPF is available even where the age-95 test fails.
In practice this floor almost never binds in the resale market. Of the 17,455 flats sold in 2026, none had under 20 years remaining.
3. The HDB loan LTV is 75%, not 80%
Since 20 August 2024, the loan-to-value limit on an HDB housing loan is 75%, lowered from 80% to match what financial institutions offer. It applies to complete resale applications received on or after that date.
Many guides still say 80%. On a $600,000 flat that difference is $30,000 of cash you need and may not have budgeted.
The rule nobody inverts: every flat has a minimum buyer age
The age-95 test is usually explained from the flat's side — "this flat has 65 years left." Turn it around and it becomes something you can actually shop with.
A flat's remaining lease implies the youngest age at which a buyer still gets full entitlement:
minimum age for full CPF and loan = 95 − remaining lease
A flat with 65 years left gives full entitlement to a buyer aged 30 or older. A 28-year-old buying the same flat is pro-rated.
Applied to every flat that actually sold in 2026, the effect is larger than most buyers expect:
| Your age | Share of the 2026 resale market where you get full CPF and loan |
|---|---|
| 25 | 54.3% |
| 30 | 62.9% |
| 35 | 71.8% |
| 40 | 86.0% |
PropAce analysis of 17,455 HDB resale transactions, January–September 2026.
A 25-year-old is pro-rated on nearly half the market. A 40-year-old on one flat in seven. The younger you are, the smaller your effective market — which is the opposite of how flat-buying is usually described to young couples.
What a shorter lease actually costs
Here the data contradicts the simple story.
Comparing 4-room flats sold in the same town between 2024 and 2026 — older stock with 55 to 75 years left against newer stock with 90 or more — the gap in price per square metre:
| Town | Older stock vs newer |
|---|---|
| Clementi | −47.6% |
| Ang Mo Kio | −44.2% |
| Geylang | −37.6% |
| Toa Payoh | −36.7% |
| Kallang/Whampoa | −35.2% |
| Bedok | −31.6% |
| Pasir Ris | −26.7% |
| Bukit Merah | −25.4% |
| Tampines | −25.0% |
| Queenstown | −24.0% |
| Bukit Batok | −24.0% |
| Jurong West | −23.9% |
| Woodlands | −19.0% |
| Choa Chu Kang | −18.3% |
| Sembawang | −17.8% |
| Hougang | −16.1% |
| Bukit Panjang | −15.5% |
| Yishun | −14.0% |
| Sengkang | −13.5% |
PropAce analysis of HDB resale transactions, 2024 to September 2026. 4-room flats only. Towns with at least 30 sales in each lease band.
Two things stand out.
The gap is widest in mature estates, not oldest ones. Clementi and Ang Mo Kio show nearly half, while Sengkang and Yishun show a seventh. If lease decay alone drove this, the ranking would follow lease age. It does not.
This is not a pure lease effect, and you should not read it as one. In mature towns the "newer" comparison group includes recently completed flats on prime central sites, which carry a large premium for reasons that have nothing to do with the lease — build quality, storey height, exact location within the town. The table measures the observed price gap between old and new stock, not the cost of the lease by itself. Treating it as a pure decay curve would overstate the effect substantially, particularly in central estates.
What it does establish is that the discount is real, that it varies by a factor of three across towns, and that a single national rule of thumb about lease decay will mislead you in either direction depending on where you are looking.
What this means in practice
Work out your minimum age first. Before shortlisting, take 95 minus your age. That is the remaining lease you need for full entitlement. Anything below it is still buyable — with more cash.
Get the pro-rated figure from CPF, not from a guide. The formula is not published. Use the CPF housing usage calculator with your actual age and the actual remaining lease.
Budget on 75% LTV. If your sums were built on 80%, you are short.
Judge the discount locally. The gap between old and new stock in Sengkang is nothing like the gap in Clementi. Compare against what the same flat type actually transacted at in that town, not against a national average.
Separate the two questions. "Can I finance this flat?" is a rule question with a definite answer. "Is it good value?" is a market question. An older flat that fails the age-95 test may still be the better buy if the discount more than covers the extra cash you must find.
Sources and method
Financing rules verified against CPF Board and HDB as at 6 September 2026.
Price analysis uses the public HDB resale transaction record — 978,299 sales from January 1990 to September 2026. Remaining lease at the point of sale is computed from the lease commencement year rather than taken from the reported text field. Price per square metre is used throughout so that flats of different sizes compare fairly. Median, not mean, to limit the effect of outliers.
This guide is general information, not financial, legal or property advice. Rules change, and the figures above describe past transactions, which do not predict what any particular flat will fetch. Confirm your own position with HDB and the CPF Board before you commit to anything.