Blk 423 Clementi Ave 1
Completed 2011 · 28 storeys · 204 flats · 86 years 03 months remaining · 52 resale transactions on record · median household income in Clementi: $10,500/mo
28 storeys · completed 2011
What the record shows
A 4-room here sold for $962,000 in Jul 2026. The same flat type in this block averaged $764,500 in 2020 - a gain of $197,500 - about $90 a day while the owner slept.
In this block, 2-room flats from floor 19 up have sold for a median of $422,000 - $1,000 less than floors 9 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 |
|---|---|---|---|---|---|
| 2-ROOM | $2,700/mo | $2,300–$3,000 | $2,900/mo | - | 4 |
| 3-ROOM | $3,100/mo | $3,100–$3,100 | $3,000/mo | - | 1 |
| 4-ROOM | $4,450/mo | $4,200–$4,700 | $3,900/mo | - | 2 |
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 · 23 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 |
|---|---|---|---|---|---|---|
| Jul 2026 | 4 ROOM | 10 to 12 | 99 | $962,000 | $903 | 86y 03m |
| Jul 2026 | 3 ROOM | 04 to 06 | 75 | $710,000 | $879 | 86y 03m |
| Mar 2026 | 2 ROOM | 04 to 06 | 49 | $458,000 | $868 | 86y 07m |
| Jul 2025 | 2 ROOM | 07 to 09 | 49 | $423,000 | $802 | 87y 02m |
| Jul 2025 | 2 ROOM | 25 to 27 | 49 | $475,000 | $901 | 87y 02m |
| Feb 2025 | 4 ROOM | 16 to 18 | 100 | $979,000 | $910 | 87y 08m |
| Jan 2025 | 4 ROOM | 10 to 12 | 99 | $931,888 | $874 | 87y 09m |
| Sept 2024 | 3 ROOM | 07 to 09 | 70 | $680,000 | $902 | 88y 01m |
| Jul 2024 | 2 ROOM | 25 to 27 | 49 | $422,000 | $800 | 88y 03m |
| Jun 2024 | 2 ROOM | 22 to 24 | 49 | $475,000 | $901 | 88y 04m |
| Dec 2023 | 3 ROOM | 04 to 06 | 70 | $575,000 | $763 | 88y 10m |
| Nov 2023 | 3 ROOM | 13 to 15 | 70 | $615,000 | $816 | 88y 10m |
| Jan 2023 | 4 ROOM | 07 to 09 | 100 | $805,000 | $748 | 89y 08m |
| Jan 2023 | 4 ROOM | 04 to 06 | 99 | $825,000 | $774 | 89y 09m |
| Dec 2022 | 2 ROOM | 10 to 12 | 49 | $380,000 | $720 | 89y 10m |
| Aug 2022 | 2 ROOM | 19 to 21 | 50 | $391,888 | $728 | 90y 01m |
| Aug 2022 | 2 ROOM | 22 to 24 | 50 | $398,000 | $740 | 90y 02m |
| May 2022 | 4 ROOM | 22 to 24 | 100 | $812,000 | $754 | 90y 05m |
| Jan 2022 | 2 ROOM | 04 to 06 | 49 | $346,000 | $656 | 90y 09m |
| Jan 2022 | 3 ROOM | 13 to 15 | 75 | $560,000 | $694 | 90y 09m |
| Oct 2021 | 4 ROOM | 13 to 15 | 100 | $760,000 | $706 | 91y |
| Sept 2021 | 3 ROOM | 10 to 12 | 70 | $570,000 | $756 | 91y 01m |
| Sept 2021 | 2 ROOM | 16 to 18 | 49 | $340,000 | $645 | 91y 01m |
| Jun 2021 | 2 ROOM | 13 to 15 | 49 | $328,888 | $624 | 91y 04m |
| May 2021 | 2 ROOM | 13 to 15 | 50 | $325,000 | $604 | 91y 05m |
| Jan 2021 | 2 ROOM | 01 to 03 | 49 | $306,000 | $580 | 91y 09m |
| Dec 2020 | 3 ROOM | 07 to 09 | 70 | $535,000 | $710 | 91y 10m |
| Nov 2020 | 4 ROOM | 10 to 12 | 100 | $748,000 | $695 | 91y 11m |
| Nov 2020 | 4 ROOM | 04 to 06 | 100 | $738,000 | $686 | 91y 11m |
| Nov 2020 | 2 ROOM | 01 to 03 | 50 | $306,000 | $569 | 91y 10m |
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 2011 · same generation
2-room median $16k below this block · 5 vs 4 sales
4-room median $38k below this block · 4 vs 3 sales
4-room median $19k below this block · 14 vs 3 sales
4-room median $27k below this block · 7 vs 3 sales
Condos nearby
The private premium, measured: the nearest condo trades at 2.4×this block’s PSF.
Grounded in this block’s own resale record, trend and lease - ask away.