Blk 423 Choa Chu Kang Ave 4 is an HDB block in Choa Chu Kang (completed in 1990, 12 storeys, 115 units). As of Jul 2026, its median resale price over the last 24 months is $555,000, from 7 sales. 115 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Choa Chu Kang |
|---|---|
| Completed | 1990 |
| Lease from | 1992 |
| Storeys | 12 |
| Dwelling units | 115 |
| Unit mix (sold) | 4-room ×93 · 5-room ×22 |
| Recorded resales | 115 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 4-Room | $550,000 | $5,288/m² | 5 |
| 5-Room | $632,500 | $5,184/m² | 2 |
Median monthly rent at this block: $3,250/mo (3 rental contracts, last 12 months).
Estimated gross rental yield: ~7.0% (Choa Chu Kang average: ~6.4%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 72% of Choa Chu Kang blocks with recent sales.
For a typical 4-room flat here, our price model estimates $512,508–$573,314 (central estimate $542,911). Recent sales — median $547,438 — 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 |
|---|---|---|---|
| 1995 | $268,000 | $442,224 | 1 |
| 1996 | $330,500 | $537,930 | 10 |
| 1997 | $325,000 | $518,490 | 10 |
| 1998 | $273,000 | $436,720 | 11 |
| 1999 | $253,000 | $404,629 | 11 |
| 2000 | $315,000 | $497,082 | 6 |
| 2001 | $222,750 | $347,982 | 4 |
| 2002 | $209,000 | $327,785 | 9 |
| 2003 | $225,000 | $351,165 | 1 |
| 2004 | $215,700 | $331,114 | 3 |
| 2005 | $221,000 | $337,652 | 4 |
| 2006 | $233,500 | $353,337 | 2 |
| 2007 | $287,000 | $425,320 | 1 |
| 2008 | $277,500 | $385,651 | 2 |
| 2009 | $305,000 | $421,391 | 3 |
| 2010 | $365,000 | $490,414 | 5 |
| 2011 | $406,500 | $518,921 | 4 |
| 2012 | $455,000 | $555,391 | 3 |
| 2014 | $380,000 | $448,494 | 2 |
| 2015 | $385,000 | $456,784 | 2 |
| 2016 | $360,000 | $429,395 | 1 |
| 2017 | $365,500 | $433,455 | 2 |
| 2018 | $333,000 | $393,188 | 3 |
| 2019 | $348,500 | $409,168 | 2 |
| 2020 | $370,000 | $435,160 | 3 |
| 2021 | $487,000 | $559,800 | 1 |
| 2023 | $591,000 | $610,588 | 1 |
| 2024 | $540,000 | $544,876 | 1 |
| 2025 | $557,778 | $557,778 | 4 |
| 2026 | $540,000 | $540,000 | 3 |
| Record sale | $635,000 (5-Room, 2025-02) |
|---|---|
| First recorded sale | $268,000 (1995-10) |
| Busiest year | 1998 · 11 sales |
| 10-year change (real) | +26% (+2.3%/yr, 2016→2026) |
| Total transacted | $37.5M across 115 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2026-05 | 4-Room | 01 TO 03 | 104 | $540,000 |
| 2026-04 | 5-Room | 01 TO 03 | 122 | $630,000 |
| 2026-03 | 4-Room | 04 TO 06 | 104 | $540,000 |
| 2025-11 | 4-Room | 04 TO 06 | 104 | $560,555 |
| 2025-07 | 4-Room | 10 TO 12 | 104 | $555,000 |
| 2025-02 | 4-Room | 04 TO 06 | 104 | $550,000 |
| 2025-02 | 5-Room | 04 TO 06 | 122 | $635,000 |
| 2024-07 | 4-Room | 10 TO 12 | 104 | $540,000 |
| 2023-06 | 5-Room | 07 TO 09 | 122 | $591,000 |
| 2021-08 | 5-Room | 01 TO 03 | 122 | $487,000 |
| 2020-09 | 4-Room | 07 TO 09 | 104 | $380,000 |
| 2020-06 | 4-Room | 10 TO 12 | 104 | $370,000 |
| 2020-01 | 4-Room | 01 TO 03 | 104 | $310,000 |
| 2019-09 | 4-Room | 04 TO 06 | 104 | $352,000 |
| 2019-01 | 4-Room | 04 TO 06 | 104 | $345,000 |
| 2018-09 | 5-Room | 10 TO 12 | 122 | $450,000 |
| 2018-04 | 4-Room | 01 TO 03 | 104 | $295,000 |
| 2018-01 | 4-Room | 04 TO 06 | 104 | $333,000 |
| 2017-07 | 4-Room | 10 TO 12 | 104 | $373,000 |
| 2017-01 | 4-Room | 10 TO 12 | 104 | $358,000 |
| Block | Median (24 mo) | Median $/m² |
|---|---|---|
| 1. Blk 420 | $865,000 | $5,845/m² |
| 2. Blk 419 | $861,500 | $5,821/m² |
| 3. Blk 448 | $815,000 | $5,791/m² |
| 4. Blk 437 | $815,000 | $5,660/m² |
| 5. Blk 454 | $750,000 | $5,282/m² |
| 6. Blk 461 | $741,000 | $5,218/m² |
| 7. Blk 436 | $735,000 | $4,966/m² |
| 8. Blk 305 | $715,000 | $5,543/m² |
| 9. Blk 438 | $698,000 | $5,248/m² |
| 10. Blk 458 | $682,500 | $5,123/m² |
| 11. Blk 417 | $666,944 | $5,312/m² |
| 12. Blk 429 | $663,944 | $5,197/m² |
| 13. Blk 457 | $648,000 | $5,268/m² |
| 14. Blk 431 | $644,000 | $5,537/m² |
| 15. Blk 441 | $635,000 | $5,241/m² |
Showing the top 15 of 52 blocks.
The median resale price over the last 24 months is $555,000 (7 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 $512,508–$573,314 (central estimate $542,911). Recent sales — median $547,438 — sit within that range.
The median monthly rent is $3,250/mo over the last 12 months (3 contracts).
The block was completed in 1990 and its 99-year lease runs from 1992.