Blk 640 Choa Chu Kang St 64 is an HDB block in Choa Chu Kang (completed in 1996, 19 storeys, 136 units). As of Jul 2026, its median resale price over the last 24 months is $690,000, about 23% above the Choa Chu Kang median, from 5 sales. 127 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Choa Chu Kang |
|---|---|
| Completed | 1996 |
| Lease from | 1998 |
| Storeys | 19 |
| Dwelling units | 136 |
| Unit mix (sold) | 4-room ×64 · exec ×72 |
| Recorded resales | 127 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 4-Room | $650,000 | $6,500/m² | 3 |
| Executive | $965,000 | $6,655/m² | 2 |
Median monthly rent at this block: $3,075/mo (6 rental contracts, last 12 months).
Estimated gross rental yield: ~5.3% (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 5% of Choa Chu Kang blocks with recent sales.
For a typical 4-room flat here, our price model estimates $525,898–$588,292 (central estimate $557,095). Recent sales — median $611,733 — sit above 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 |
|---|---|---|---|
| 2001 | $475,000 | $742,049 | 17 |
| 2002 | $292,500 | $458,743 | 16 |
| 2003 | $300,000 | $468,220 | 3 |
| 2004 | $345,000 | $529,598 | 4 |
| 2005 | $280,000 | $427,795 | 8 |
| 2006 | $310,000 | $469,098 | 7 |
| 2007 | $382,000 | $566,105 | 8 |
| 2008 | $376,500 | $523,235 | 6 |
| 2009 | $452,500 | $625,178 | 4 |
| 2010 | $422,650 | $567,872 | 8 |
| 2011 | $610,000 | $778,701 | 5 |
| 2012 | $670,000 | $817,829 | 7 |
| 2013 | $578,000 | $689,238 | 3 |
| 2014 | $490,000 | $578,322 | 2 |
| 2015 | $611,000 | $724,922 | 2 |
| 2016 | $570,944 | $681,001 | 2 |
| 2017 | $440,000 | $521,806 | 1 |
| 2018 | $435,000 | $513,624 | 1 |
| 2019 | $425,444 | $499,506 | 6 |
| 2021 | $510,000 | $586,238 | 3 |
| 2022 | $662,500 | $717,541 | 4 |
| 2023 | $691,500 | $714,419 | 2 |
| 2024 | $600,000 | $605,418 | 3 |
| 2025 | $690,000 | $690,000 | 3 |
| 2026 | $796,000 | $796,000 | 2 |
| Record sale | $980,000 (Executive, 2025-04) |
|---|---|
| First recorded sale | $254,000 (2001-10) |
| Busiest year | 2001 · 17 sales |
| 10-year change (real) | +17% (+1.6%/yr, 2016→2026) |
| Total transacted | $58.7M across 127 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2026-04 | Executive | 13 TO 15 | 145 | $950,000 |
| 2026-03 | 4-Room | 07 TO 09 | 100 | $642,000 |
| 2025-05 | 4-Room | 10 TO 12 | 100 | $690,000 |
| 2025-05 | 4-Room | 13 TO 15 | 100 | $650,000 |
| 2025-04 | Executive | 16 TO 18 | 145 | $980,000 |
| 2024-05 | Executive | 16 TO 18 | 145 | $885,000 |
| 2024-04 | 4-Room | 10 TO 12 | 100 | $565,000 |
| 2024-04 | 4-Room | 16 TO 18 | 100 | $600,000 |
| 2023-03 | Executive | 10 TO 12 | 145 | $845,000 |
| 2023-02 | 4-Room | 01 TO 03 | 100 | $538,000 |
| 2022-08 | 4-Room | 16 TO 18 | 100 | $570,000 |
| 2022-07 | Executive | 16 TO 18 | 145 | $880,000 |
| 2022-06 | Executive | 04 TO 06 | 145 | $755,000 |
| 2022-03 | 4-Room | 16 TO 18 | 100 | $565,000 |
| 2021-10 | 4-Room | 07 TO 09 | 100 | $532,000 |
| 2021-09 | 4-Room | 13 TO 15 | 100 | $510,000 |
| 2021-06 | 4-Room | 04 TO 06 | 100 | $500,000 |
| 2019-12 | 4-Room | 07 TO 09 | 100 | $405,000 |
| 2019-11 | 4-Room | 01 TO 03 | 100 | $405,000 |
| 2019-10 | Executive | 16 TO 18 | 145 | $675,000 |
| Block | Median (24 mo) | Median $/m² |
|---|---|---|
| 1. Blk 643 | $783,000 | $6,366/m² |
| 2. Blk 641 | $780,000 | $6,450/m² |
| 3. Blk 642 | $692,500 | $6,215/m² |
| 4. Blk 640 | $690,000 | $6,552/m² |
| 5. Blk 638 | $680,000 | $6,305/m² |
| 6. Blk 639 | $667,500 | $6,675/m² |
The median resale price over the last 24 months is $690,000 (5 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 $525,898–$588,292 (central estimate $557,095). Recent sales — median $611,733 — sit above that range.
The median monthly rent is $3,075/mo over the last 12 months (6 contracts).
The block was completed in 1996 and its 99-year lease runs from 1998.