Lease decay, explained without the panic
Every HDB flat is a 99-year clock, and the fear is that an older one melts away to nothing. The record tells a calmer story: a slow drift for most of that clock, and a real bite only near the end - for a reason that has little to do with the flat.
Every HDB flat is sold on a 99-year lease, and when it runs out the flat returns to the state, worth nothing. That single fact drives one of the most repeated warnings in the market: don’t buy an old flat, or you’ll watch your money evaporate as the lease ticks down. It sounds airtight. The transaction record says it’s mostly wrong.
You can’t even see the decay in the prices
If lease decay were the dominant force, older flats would be visibly cheaper. They often aren’t. As the MRT guide showed, four-room flats with 80–85 years left outsold flats with a full decade more lease - because the shorter-lease ones sat in prime, central, near-MRT locations. Age and location are tangled together, and in the raw numbers location wins. So the market flatly contradicts the panic: buyers are routinely paying more for less lease.
To actually see decay, you have to hold location still - compare older against newer flats within the same town, and let the lease be the only thing that really changes.
Do that, and decay is gentle
Within a single town, price eases down by roughly 1% of the flat’s value for each year of lease - very roughly $3,000 to $6,000 a year on a mid-priced flat. That’s the whole gradient, and even some of it is really newer flats having better layouts and locations, not the lease clock alone. A flat with 90 years left and one with 80 are almost indistinguishable on lease grounds. For the broad middle of the range, the steady “melting ice cube” simply isn’t there.
The cliff is real - but it’s at ~60 years, not zero
Netting out location so we’re measuring the lease itself, the decline is mild while a flat still has plenty of runway - then it steepens sharply as the lease gets short:
And the reason isn’t the flat - it’s money. Around the 60-year mark, a flat’s remaining lease stops being long enough to cover a young buyer to age 95. Past that line, CPF savings can only be used on a pro-rated basis and housing loans shrink; shorter still, and CPF and financing largely disappear. Fewer buyers can fund the purchase, the pool tilts toward older, cash-richer ones, and the price has to fall to clear. It’s no accident that the data’s inflection sits right where that financing rule bites.
What this means for you
How to hold lease in your head
- For most resale flats - 70-plus years left - decay is a slow drag, not a countdown. Floor, location and condition will move the price far more than the lease clock.
- Watch the ~60-year line. Below it, reselling gets harder: your eventual buyers hit the same CPF and loan limits, so you’re selling to a smaller, more cash-heavy crowd.
- Ask the financing question first. Does the remaining lease cover the youngest buyer to age 95? That one line decides whether full CPF and loans are on the table - for you now, and for whoever buys from you later.
- Match the lease to your plan. Buying a great location to live in, with 65-plus years and the sums working? Reasonable. Counting on an easy resale or passing it on? Short leases are where the real risk lives.
Lease decay isn’t a melting ice cube. It’s a gentle drift that turns into a financing cliff around 60 years left - so the number that should worry you isn’t the age of the flat, it’s whether the lease still covers a loan.
See how lease changes the picture
Find a Flat lets you filter by minimum remaining lease and watch how prices - and the towns within reach - shift as you move the lease bar.