Blk 421 Choa Chu Kang Avenue 4 — HDB resale prices
HDB resale prices, Choa Chu Kang · 4-Room · built 1990
median resale price, last 24 months
3 sales in that window · as of Sep 2026
How it compares
Blk 421 Choa Chu Kang Avenue 4 is an HDB block in Choa Chu Kang (completed in 1990, 12 storeys, 88 units). As of Sep 2026, its median resale price over the last 24 months is $555,000, about 6% below the Choa Chu Kang median, from 3 sales. 102 resale transactions have been recorded here since 1990.
Price by year
At a glance
Unit mix (sold): 4-room ×66 · 5-room ×22
Prices by flat type — last 24 months (as of Sep 2026)
Median monthly rent at this block: $3,400/mo (3 rental contracts, last 12 months).
Estimated gross rental yield: ~7.4% (Choa Chu Kang average: ~6.5%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 58% of Choa Chu Kang blocks with recent sales.
What the price model says
For a typical 4-room flat here, our price model estimates $494,025–$552,305 (central estimate $523,165). Recent sales — median $533,272 — 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 |
|---|---|---|---|
| 1996 | $338,000 | $550,137 | 9 |
| 1997 | $330,000 | $526,467 | 8 |
| 1998 | $264,800 | $423,602 | 13 |
| 1999 | $264,000 | $422,222 | 5 |
| 2000 | $318,250 | $502,211 | 4 |
| 2001 | $234,000 | $365,557 | 7 |
| 2002 | $217,000 | $340,332 | 3 |
| 2003 | $214,750 | $335,168 | 2 |
| 2005 | $227,500 | $347,583 | 2 |
| 2006 | $246,000 | $372,252 | 2 |
| 2007 | $264,500 | $391,976 | 6 |
| 2008 | $323,000 | $448,884 | 5 |
| 2009 | $362,500 | $500,833 | 2 |
| 2010 | $360,000 | $483,696 | 3 |
| 2011 | $435,800 | $556,324 | 1 |
| 2012 | $422,000 | $515,110 | 2 |
| 2013 | $436,000 | $519,910 | 2 |
| 2014 | $465,000 | $548,816 | 2 |
| 2015 | $468,750 | $556,149 | 4 |
| 2016 | $337,500 | $402,558 | 2 |
| 2018 | $400,000 | $472,298 | 3 |
| 2019 | $360,000 | $422,670 | 3 |
| 2020 | $300,000 | $352,832 | 1 |
| 2021 | $435,000 | $500,026 | 1 |
| 2023 | $510,000 | $526,903 | 3 |
| 2024 | $528,500 | $533,272 | 4 |
| 2025 | $574,888 | $574,888 | 1 |
| 2026 | $550,000 | $550,000 | 2 |
Records
| Record sale | $630,000 (5-Room, 2023-04) |
|---|---|
| First recorded sale | $405,000 (1996-06) |
| Busiest year | 1998 · 13 sales |
| 10-year change (real) | +37% (+3.2%/yr, 2016→2026) |
| Total transacted | $35.2M across 102 sales |
Recent resale transactions
| Month | Flat type | Storey | Area | Price |
|---|---|---|---|---|
| 2026-08 | 4-Room | 10–12 | 104 m² | $555,000 |
| 2026-07 | 4-Room | 04–06 | 104 m² | $545,000 |
| 2025-05 | 4-Room | 07–09 | 104 m² | $574,888 |
| 2024-07 | 4-Room | 01–03 | 104 m² | $525,000 |
| 2024-03 | 5-Room | 10–12 | 132 m² | $620,000 |
| 2024-03 | 4-Room | 10–12 | 104 m² | $532,000 |
| 2024-01 | 4-Room | 07–09 | 104 m² | $504,888 |
| 2023-12 | 4-Room | 10–12 | 104 m² | $510,000 |
| 2023-04 | 5-Room | 04–06 | 132 m² | $630,000 |
| 2023-04 | 4-Room | 10–12 | 104 m² | $496,000 |
| 2021-08 | 4-Room | 10–12 | 104 m² | $435,000 |
| 2020-09 | 4-Room | 01–03 | 104 m² | $300,000 |
| 2019-10 | 4-Room | 01–03 | 104 m² | $315,000 |
| 2019-08 | 4-Room | 10–12 | 104 m² | $360,000 |
| 2019-06 | 4-Room | 07–09 | 104 m² | $364,000 |
| 2018-11 | 5-Room | 04–06 | 132 m² | $400,000 |
| 2018-09 | 4-Room | 10–12 | 104 m² | $325,000 |
| 2018-06 | 5-Room | 07–09 | 132 m² | $405,000 |
| 2016-10 | 4-Room | 10–12 | 104 m² | $345,000 |
| 2016-07 | 4-Room | 10–12 | 104 m² | $330,000 |
Choa Chu Kang Avenue 4 blocks ranked by price
Showing the top 15 of 53 priced blocks.
More blocks on Choa Chu Kang Avenue 4
Quick answers
How much does a flat at Blk 421 Choa Chu Kang Avenue 4 cost?
The median resale price over the last 24 months is $555,000 (3 sales, as of Sep 2026). See the by-type table above for 3-room vs 4-room medians.
Is Blk 421 Choa Chu Kang Avenue 4 fairly priced?
For a typical 4-room flat here, our price model estimates $494,025–$552,305 (central estimate $523,165). Recent sales — median $533,272 — sit within that range.
What is the rent at Blk 421 Choa Chu Kang Avenue 4?
The median monthly rent is $3,400/mo over the last 12 months (3 contracts).
How old is Blk 421 Choa Chu Kang Avenue 4?
The block was completed in 1990 and its 99-year lease runs from 1992.