Blk 421 Jurong West St 42 is an HDB block in Jurong West (completed in 1984, 10 storeys, 108 units). As of Jul 2026, its median resale price over the last 24 months is $400,000, about 37% below the Jurong West median, from 5 sales. 153 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Jurong West |
|---|---|
| Completed | 1984 |
| Lease from | 1985 |
| Storeys | 10 |
| Dwelling units | 108 |
| Unit mix (sold) | 3-room ×53 · 4-room ×54 |
| Recorded resales | 153 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 3-Room | $394,000 | $6,156/m² | 4 |
| 4-Room | $450,000 | $5,357/m² | 1 |
Median monthly rent at this block: $3,350/mo (4 rental contracts, last 12 months).
Estimated gross rental yield: ~10.1% (Jurong West average: ~7.0%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 19% of Jurong West blocks with recent sales.
For a typical 3-room flat here, our price model estimates $320,542–$358,573 (central estimate $339,558). Recent sales — median $377,649 — 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 |
|---|---|---|---|
| 1990 | $65,800 | $123,185 | 1 |
| 1991 | $41,000 | $74,204 | 1 |
| 1992 | $55,500 | $98,242 | 2 |
| 1993 | $80,300 | $138,958 | 4 |
| 1994 | $107,500 | $180,445 | 4 |
| 1995 | $135,000 | $222,762 | 9 |
| 1996 | $218,000 | $354,822 | 11 |
| 1997 | $168,000 | $268,020 | 7 |
| 1998 | $137,000 | $219,160 | 8 |
| 1999 | $127,000 | $203,114 | 10 |
| 2000 | $152,000 | $239,862 | 6 |
| 2001 | $115,500 | $180,435 | 12 |
| 2002 | $116,000 | $181,929 | 3 |
| 2003 | $134,000 | $209,138 | 6 |
| 2004 | $180,000 | $276,312 | 3 |
| 2005 | $166,000 | $253,621 | 6 |
| 2006 | $144,500 | $218,660 | 5 |
| 2007 | $144,000 | $213,401 | 2 |
| 2008 | $168,000 | $233,475 | 3 |
| 2009 | $228,000 | $315,007 | 5 |
| 2010 | $310,000 | $416,516 | 5 |
| 2011 | $336,000 | $428,924 | 2 |
| 2012 | $340,000 | $415,018 | 4 |
| 2013 | $315,000 | $375,623 | 3 |
| 2014 | $306,000 | $361,156 | 1 |
| 2015 | $330,000 | $391,529 | 2 |
| 2016 | $272,500 | $325,028 | 4 |
| 2017 | $269,000 | $319,013 | 3 |
| 2019 | $249,000 | $292,347 | 2 |
| 2020 | $315,000 | $370,474 | 2 |
| 2021 | $308,000 | $354,042 | 1 |
| 2022 | $328,000 | $355,250 | 5 |
| 2023 | $387,500 | $400,343 | 4 |
| 2024 | $375,000 | $378,386 | 3 |
| 2025 | $401,944 | $401,944 | 2 |
| 2026 | $415,000 | $415,000 | 2 |
| Record sale | $450,000 (4-Room, 2026-01) |
|---|---|
| First recorded sale | $65,800 (1990-07) |
| Busiest year | 2001 · 12 sales |
| 10-year change (real) | +28% (+2.5%/yr, 2016→2026) |
| Total transacted | $31.2M across 153 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2026-02 | 3-Room | 04 TO 06 | 64 | $380,000 |
| 2026-01 | 4-Room | 01 TO 03 | 84 | $450,000 |
| 2025-11 | 3-Room | 07 TO 09 | 64 | $403,888 |
| 2025-03 | 3-Room | 07 TO 09 | 64 | $400,000 |
| 2024-10 | 3-Room | 07 TO 09 | 64 | $388,000 |
| 2024-07 | 3-Room | 04 TO 06 | 64 | $375,000 |
| 2024-04 | 3-Room | 04 TO 06 | 64 | $375,000 |
| 2023-10 | 3-Room | 07 TO 09 | 64 | $343,000 |
| 2023-09 | 3-Room | 07 TO 09 | 64 | $350,000 |
| 2023-05 | 4-Room | 01 TO 03 | 84 | $438,000 |
| 2023-02 | 4-Room | 01 TO 03 | 84 | $425,000 |
| 2022-08 | 3-Room | 04 TO 06 | 64 | $348,000 |
| 2022-07 | 3-Room | 04 TO 06 | 64 | $316,000 |
| 2022-07 | 4-Room | 07 TO 09 | 89 | $430,000 |
| 2022-04 | 3-Room | 04 TO 06 | 64 | $328,000 |
| 2022-01 | 3-Room | 07 TO 09 | 64 | $320,000 |
| 2021-05 | 3-Room | 07 TO 09 | 64 | $308,000 |
| 2020-07 | 4-Room | 01 TO 03 | 84 | $315,000 |
| 2020-01 | 4-Room | 10 TO 12 | 84 | $315,000 |
| 2019-05 | 3-Room | 07 TO 09 | 64 | $257,000 |
| Block | Median (24 mo) | Median $/m² |
|---|---|---|
| 1. Blk 556 | $818,000 | $5,332/m² |
| 2. Blk 548 | $780,000 | $4,950/m² |
| 3. Blk 407 | $770,000 | $5,133/m² |
| 4. Blk 405 | $770,000 | $5,007/m² |
| 5. Blk 410 | $768,000 | $5,016/m² |
| 6. Blk 558 | $750,000 | $5,000/m² |
| 7. Blk 409 | $750,000 | $5,000/m² |
| 8. Blk 549 | $740,000 | $4,901/m² |
| 9. Blk 453 | $690,000 | $5,188/m² |
| 10. Blk 559 | $675,000 | $4,856/m² |
| 11. Blk 547 | $675,000 | $4,821/m² |
| 12. Blk 408 | $665,000 | $4,818/m² |
| 13. Blk 452 | $642,500 | $4,831/m² |
| 14. Blk 416 | $641,500 | $4,807/m² |
| 15. Blk 551 | $636,944 | $4,738/m² |
Showing the top 15 of 55 blocks.
The median resale price over the last 24 months is $400,000 (5 sales, as of Jul 2026). See the by-type table above for 3-room vs 4-room medians.
For a typical 3-room flat here, our price model estimates $320,542–$358,573 (central estimate $339,558). Recent sales — median $377,649 — sit above that range.
The median monthly rent is $3,350/mo over the last 12 months (4 contracts).
The block was completed in 1984 and its 99-year lease runs from 1985.