Blk 421 Clementi Ave 1
Completed 2012 · 40 storeys · 300 flats · 86 years 04 months remaining · 106 resale transactions on record · median household income in Clementi: $10,500/mo
40 storeys · completed 2012
What the record shows
A 4-room here sold for $970,000 in Jun 2026. The same flat type in this block averaged $753,385 in 2020 - a gain of $216,615 - about $99 a day while the owner slept.
In this block, 4-room flats from floor 27 up have sold for a median of $868,888 - $39,888 more than floors 13 and below, same flat type, same block.
This block crosses 60 years remaining in 2052 - the line where CPF usage rules begin tightening for buyers. In Clementi over the last two years, flats below that line sold at a median 42% below their younger neighbours' PSF (741 sales).
Across Clementi, roughly 2,283 flats in newly-completed blocks reach the end of MOP between 2026 and 2028 - new sellers entering this market.
Rent check
What flats in this block actually rented for in the last 12 months - official approvals, not listings. If you’re quoted much more, you have a number to negotiate with.
| Type | Block median | Range | Clementi median | Gross yield | Rented |
|---|---|---|---|---|---|
| 3-ROOM | $2,850/mo | $2,500–$3,200 | $3,000/mo | - | 2 |
| 4-ROOM | $4,350/mo | $3,700–$5,000 | $3,900/mo | - | 6 |
Price trend
median PSF by year · ━ this block · ╌ Clementi · gaps = years with no sales here
The height gradient
every sale in 5 years, plotted by starting floor · 54 sales - do higher floors really fetch more here?
Every recent sale HDB official record, latest 30
| Month | Type | Storey | Area (sqm) | Price | PSF | Lease left |
|---|---|---|---|---|---|---|
| Jun 2026 | 4 ROOM | 22 to 24 | 96 | $970,000 | $939 | 86y 04m |
| May 2026 | 3 ROOM | 19 to 21 | 73 | $650,000 | $827 | 86y 05m |
| Apr 2026 | 4 ROOM | 25 to 27 | 100 | $975,888 | $907 | 86y 05m |
| Mar 2026 | 4 ROOM | 19 to 21 | 96 | $985,000 | $953 | 86y 06m |
| Jan 2026 | 4 ROOM | 31 to 33 | 96 | $1,038,000 | $1,005 | 86y 09m |
| Nov 2025 | 4 ROOM | 22 to 24 | 91 | $978,000 | $998 | 86y 11m |
| Nov 2025 | 4 ROOM | 10 to 12 | 100 | $965,000 | $897 | 86y 11m |
| Aug 2025 | 4 ROOM | 22 to 24 | 100 | $970,000 | $901 | 87y 01m |
| Aug 2025 | 4 ROOM | 10 to 12 | 91 | $942,888 | $963 | 87y 02m |
| May 2025 | 4 ROOM | 25 to 27 | 92 | $965,000 | $974 | 87y 05m |
| Apr 2025 | 4 ROOM | 07 to 09 | 100 | $952,488 | $885 | 87y 06m |
| Mar 2025 | 3 ROOM | 13 to 15 | 74 | $728,000 | $914 | 87y 07m |
| Feb 2025 | 4 ROOM | 04 to 06 | 91 | $850,000 | $868 | 87y 08m |
| Feb 2025 | 4 ROOM | 19 to 21 | 92 | $922,000 | $931 | 87y 09m |
| Feb 2025 | 4 ROOM | 04 to 06 | 91 | $855,000 | $873 | 87y 08m |
| Jan 2025 | 3 ROOM | 25 to 27 | 73 | $720,000 | $916 | 87y 09m |
| Nov 2024 | 3 ROOM | 01 to 03 | 73 | $616,888 | $785 | 87y 11m |
| Jul 2024 | 4 ROOM | 16 to 18 | 92 | $915,000 | $924 | 88y 03m |
| Jun 2024 | 4 ROOM | 01 to 03 | 92 | $755,000 | $762 | 88y 04m |
| May 2024 | 3 ROOM | 25 to 27 | 73 | $670,000 | $853 | 88y 05m |
| May 2024 | 3 ROOM | 04 to 06 | 74 | $600,000 | $753 | 88y 05m |
| Apr 2024 | 4 ROOM | 34 to 36 | 92 | $938,000 | $947 | 88y 06m |
| Mar 2024 | 4 ROOM | 34 to 36 | 100 | $935,888 | $869 | 88y 07m |
| Mar 2024 | 4 ROOM | 13 to 15 | 96 | $856,888 | $829 | 88y 06m |
| Feb 2024 | 4 ROOM | 31 to 33 | 92 | $888,000 | $897 | 88y 08m |
| Oct 2023 | 4 ROOM | 16 to 18 | 100 | $845,000 | $785 | 89y |
| Oct 2023 | 4 ROOM | 04 to 06 | 100 | $803,000 | $746 | 89y |
| Oct 2023 | 3 ROOM | 07 to 09 | 73 | $608,000 | $774 | 88y 11m |
| Oct 2023 | 3 ROOM | 10 to 12 | 73 | $598,000 | $761 | 89y |
| Sept 2023 | 4 ROOM | 25 to 27 | 100 | $845,000 | $785 | 89y |
Who lives in Clementi
Census of Population 2020 · planning-area aggregates · SingStat via data.gov.sg
The neighbourhood
What sits around this address - distances computed from official OneMap and LTA records.
The neighbourhood, photographed
freely-licensed photographs taken within ~450 m · Wikimedia Commons
Around this block
The nearest blocks by actual distance - street names are postal artifacts, so true neighbours often sit on a different road. Price gaps are median-vs-median on the flat type both blocks actually trade.
built 2011 · same generation
built 2022 · 10 more lease years than this block
4-room median $22k below this block · 14 vs 14 sales
built 2022 · 10 more lease years than this block
4-room median within $5k of this block
built 2022 · 10 more lease years than this block
Condos nearby
The private premium, measured: the nearest condo trades at 2.3×this block’s PSF.
Grounded in this block’s own resale record, trend and lease - ask away.