Blk 421 Clementi Ave 1 is an HDB block in Clementi (completed in 2012, 40 storeys, 300 units). As of Jul 2026, its median resale price over the last 24 months is $952,488, about 53% above the Clementi median, from 17 sales. 108 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Clementi |
|---|---|
| Completed | 2012 |
| Lease from | 2013 |
| Storeys | 40 |
| Dwelling units | 300 |
| Unit mix (sold) | 3-room ×76 · 4-room ×224 |
| Recorded resales | 108 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 3-Room | $685,000 | $9,371/m² | 4 |
| 4-Room | $965,000 | $10,022/m² | 13 |
Median monthly rent at this block: $3,700/mo (5 rental contracts, last 12 months).
Estimated gross rental yield: ~4.7% (Clementi average: ~6.3%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 9% of Clementi blocks with recent sales.
For a typical 4-room flat here, our price model estimates $804,110–$899,513 (central estimate $851,812). Recent sales — median $897,686 — sit within that range. The model explains 94% of resale prices with a typical error of ±6%. Indicative only — not an official valuation.
| Year | Median (nominal) | Median (today's $) | Sales |
|---|---|---|---|
| 2016 | $785,000 | $936,319 | 2 |
| 2017 | $714,000 | $846,748 | 9 |
| 2018 | $705,000 | $832,426 | 15 |
| 2019 | $575,000 | $675,097 | 14 |
| 2020 | $717,500 | $843,857 | 12 |
| 2021 | $755,000 | $867,862 | 6 |
| 2022 | $789,444 | $855,031 | 10 |
| 2023 | $803,000 | $829,614 | 15 |
| 2024 | $856,888 | $864,626 | 9 |
| 2025 | $942,888 | $942,888 | 11 |
| 2026 | $975,888 | $975,888 | 5 |
| Record sale | $1,038,000 (4-Room, 2026-01) |
|---|---|
| First recorded sale | $805,000 (2016-08) |
| Busiest year | 2018 · 15 sales |
| 10-year change (real) | +4% (+0.4%/yr, 2016→2026) |
| Total transacted | $78.8M across 108 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2026-06 | 4-Room | 22 TO 24 | 96 | $970,000 |
| 2026-05 | 3-Room | 19 TO 21 | 73 | $650,000 |
| 2026-04 | 4-Room | 25 TO 27 | 100 | $975,888 |
| 2026-03 | 4-Room | 19 TO 21 | 96 | $985,000 |
| 2026-01 | 4-Room | 31 TO 33 | 96 | $1,038,000 |
| 2025-11 | 4-Room | 10 TO 12 | 100 | $965,000 |
| 2025-11 | 4-Room | 22 TO 24 | 91 | $978,000 |
| 2025-08 | 4-Room | 10 TO 12 | 91 | $942,888 |
| 2025-08 | 4-Room | 22 TO 24 | 100 | $970,000 |
| 2025-05 | 4-Room | 25 TO 27 | 92 | $965,000 |
| 2025-04 | 4-Room | 07 TO 09 | 100 | $952,488 |
| 2025-03 | 3-Room | 13 TO 15 | 74 | $728,000 |
| 2025-02 | 4-Room | 04 TO 06 | 91 | $850,000 |
| 2025-02 | 4-Room | 19 TO 21 | 92 | $922,000 |
| 2025-02 | 4-Room | 04 TO 06 | 91 | $855,000 |
| 2025-01 | 3-Room | 25 TO 27 | 73 | $720,000 |
| 2024-11 | 3-Room | 01 TO 03 | 73 | $616,888 |
| 2024-07 | 4-Room | 16 TO 18 | 92 | $915,000 |
| 2024-06 | 4-Room | 01 TO 03 | 92 | $755,000 |
| 2024-05 | 3-Room | 04 TO 06 | 74 | $600,000 |
| Block | Median (24 mo) | Median $/m² |
|---|---|---|
| 1. Blk 425 | $1,050,000 | $9,500/m² |
| 2. Blk 416 | $1,045,000 | $9,778/m² |
| 3. Blk 421 | $952,488 | $9,838/m² |
| 4. Blk 420 | $935,000 | $9,800/m² |
| 5. Blk 417 | $921,500 | $9,448/m² |
| 6. Blk 424 | $830,094 | $9,514/m² |
| 7. Blk 418 | $691,500 | $9,300/m² |
| 8. Blk 423 | $577,500 | $9,553/m² |
The median resale price over the last 24 months is $952,488 (17 sales, as of Jul 2026). See the by-type table above for 3-room vs 4-room medians.
For a typical 4-room flat here, our price model estimates $804,110–$899,513 (central estimate $851,812). Recent sales — median $897,686 — sit within that range.
The median monthly rent is $3,700/mo over the last 12 months (5 contracts).
The block was completed in 2012 and its 99-year lease runs from 2013.