Blk 421 Clementi Avenue 1 — HDB resale prices
HDB resale prices, Clementi · 3-Room, 4-Room · built 2012
median resale price, last 24 months
19 sales in that window · as of Sep 2026
How it compares
Blk 421 Clementi Avenue 1 is an HDB block in Clementi (completed in 2012, 40 storeys, 300 units). As of Sep 2026, its median resale price over the last 24 months is $952,488, about 50% above the Clementi median, from 19 sales. 110 resale transactions have been recorded here since 1990.
Price by year
At a glance
Unit mix (sold): 3-room ×76 · 4-room ×224
Prices by flat type — last 24 months (as of Sep 2026)
Median monthly rent at this block: $4,000/mo (7 rental contracts, last 12 months).
Estimated gross rental yield: ~5.0% (Clementi average: ~6.1%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 10% of Clementi blocks with recent sales.
What the price model says
For a typical 4-room flat here, our price model estimates $808,251–$903,601 (central estimate $855,926). 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.
Median resale price by year
| 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 | 7 |
Records
| 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 | $80.7M across 110 sales |
Recent resale transactions
| Month | Flat type | Storey | Area | Price |
|---|---|---|---|---|
| 2026-09 | 4-Room | 22–24 | 96 m² | $996,888 |
| 2026-08 | 4-Room | 07–09 | 92 m² | $880,000 |
| 2026-06 | 4-Room | 22–24 | 96 m² | $970,000 |
| 2026-05 | 3-Room | 19–21 | 73 m² | $650,000 |
| 2026-04 | 4-Room | 25–27 | 100 m² | $975,888 |
| 2026-03 | 4-Room | 19–21 | 96 m² | $985,000 |
| 2026-01 | 4-Room | 31–33 | 96 m² | $1,038,000 |
| 2025-11 | 4-Room | 22–24 | 91 m² | $978,000 |
| 2025-11 | 4-Room | 10–12 | 100 m² | $965,000 |
| 2025-08 | 4-Room | 22–24 | 100 m² | $970,000 |
| 2025-08 | 4-Room | 10–12 | 91 m² | $942,888 |
| 2025-05 | 4-Room | 25–27 | 92 m² | $965,000 |
| 2025-04 | 4-Room | 07–09 | 100 m² | $952,488 |
| 2025-03 | 3-Room | 13–15 | 74 m² | $728,000 |
| 2025-02 | 4-Room | 19–21 | 92 m² | $922,000 |
| 2025-02 | 4-Room | 04–06 | 91 m² | $855,000 |
| 2025-02 | 4-Room | 04–06 | 91 m² | $850,000 |
| 2025-01 | 3-Room | 25–27 | 73 m² | $720,000 |
| 2024-11 | 3-Room | 01–03 | 73 m² | $616,888 |
| 2024-07 | 4-Room | 16–18 | 92 m² | $915,000 |
Clementi Avenue 1 blocks ranked by price
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Quick answers
How much does a flat at Blk 421 Clementi Avenue 1 cost?
The median resale price over the last 24 months is $952,488 (19 sales, as of Sep 2026). See the by-type table above for 3-room vs 4-room medians.
Is Blk 421 Clementi Avenue 1 fairly priced?
For a typical 4-room flat here, our price model estimates $808,251–$903,601 (central estimate $855,926). Recent sales — median $897,686 — sit within that range.
What is the rent at Blk 421 Clementi Avenue 1?
The median monthly rent is $4,000/mo over the last 12 months (7 contracts).
How old is Blk 421 Clementi Avenue 1?
The block was completed in 2012 and its 99-year lease runs from 2013.