Blk 423 Yishun Ave 11 is an HDB block in Yishun (completed in 1987, 12 storeys, 110 units). As of Jul 2026, its median resale price over the last 24 months is $495,000, about 3% below the Yishun median, from 4 sales. 184 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Yishun |
|---|---|
| Completed | 1987 |
| Lease from | 1988 |
| Storeys | 12 |
| Dwelling units | 110 |
| Unit mix (sold) | 4-room ×110 |
| Recorded resales | 184 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 4-Room | $495,000 | $5,702/m² | 4 |
On price per square metre, this block is cheaper than 70% of Yishun blocks with recent sales.
For a typical 4-room flat here, our price model estimates $399,299–$446,673 (central estimate $422,986). Recent sales — median $458,091 — 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 |
|---|---|---|---|
| 1993 | $122,500 | $211,985 | 4 |
| 1994 | $156,000 | $261,855 | 13 |
| 1995 | $165,000 | $272,265 | 5 |
| 1996 | $244,000 | $397,141 | 11 |
| 1997 | $250,000 | $398,839 | 9 |
| 1998 | $190,000 | $303,944 | 19 |
| 1999 | $173,000 | $276,683 | 17 |
| 2000 | $190,000 | $299,828 | 7 |
| 2001 | $158,000 | $246,829 | 6 |
| 2002 | $169,500 | $265,836 | 6 |
| 2003 | $171,500 | $267,666 | 6 |
| 2004 | $162,000 | $248,681 | 4 |
| 2005 | $195,900 | $299,303 | 4 |
| 2006 | $160,100 | $242,266 | 7 |
| 2007 | $165,000 | $244,522 | 2 |
| 2008 | $221,000 | $307,131 | 6 |
| 2009 | $229,000 | $316,388 | 2 |
| 2010 | $285,000 | $382,926 | 5 |
| 2011 | $321,500 | $410,414 | 6 |
| 2012 | $333,000 | $406,473 | 2 |
| 2013 | $350,000 | $417,359 | 5 |
| 2014 | $366,500 | $432,561 | 2 |
| 2015 | $320,500 | $380,258 | 7 |
| 2016 | $310,000 | $369,757 | 3 |
| 2017 | $312,500 | $370,601 | 4 |
| 2018 | $332,500 | $392,598 | 2 |
| 2019 | $280,000 | $328,743 | 5 |
| 2020 | $300,000 | $352,832 | 2 |
| 2021 | $349,000 | $401,170 | 3 |
| 2022 | $375,000 | $406,155 | 3 |
| 2023 | $407,500 | $421,006 | 2 |
| 2024 | $458,000 | $462,136 | 1 |
| 2025 | $500,000 | $500,000 | 3 |
| 2026 | $490,000 | $490,000 | 1 |
| Record sale | $550,000 (4-Room, 2025-12) |
|---|---|
| First recorded sale | $78,000 (1993-02) |
| Busiest year | 1998 · 19 sales |
| 10-year change (real) | +33% (+2.9%/yr, 2016→2026) |
| Total transacted | $43.6M across 184 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2026-02 | 4-Room | 07 TO 09 | 84 | $490,000 |
| 2025-12 | 4-Room | 07 TO 09 | 104 | $550,000 |
| 2025-03 | 4-Room | 01 TO 03 | 84 | $468,000 |
| 2025-03 | 4-Room | 10 TO 12 | 84 | $500,000 |
| 2024-06 | 4-Room | 07 TO 09 | 84 | $458,000 |
| 2023-05 | 4-Room | 10 TO 12 | 84 | $410,000 |
| 2023-01 | 4-Room | 07 TO 09 | 84 | $405,000 |
| 2022-08 | 4-Room | 07 TO 09 | 84 | $325,000 |
| 2022-08 | 4-Room | 01 TO 03 | 84 | $375,000 |
| 2022-08 | 4-Room | 10 TO 12 | 104 | $445,000 |
| 2021-08 | 4-Room | 01 TO 03 | 84 | $349,000 |
| 2021-08 | 4-Room | 07 TO 09 | 84 | $395,000 |
| 2021-04 | 4-Room | 04 TO 06 | 84 | $332,000 |
| 2020-02 | 4-Room | 01 TO 03 | 104 | $317,000 |
| 2020-02 | 4-Room | 04 TO 06 | 84 | $283,000 |
| 2019-08 | 4-Room | 01 TO 03 | 84 | $265,000 |
| 2019-08 | 4-Room | 04 TO 06 | 84 | $270,000 |
| 2019-07 | 4-Room | 10 TO 12 | 84 | $280,000 |
| 2019-03 | 4-Room | 07 TO 09 | 84 | $305,000 |
| 2019-03 | 4-Room | 04 TO 06 | 104 | $333,000 |
| Block | Median (24 mo) | Median $/m² |
|---|---|---|
| 1. Blk 351 | $953,000 | $6,527/m² |
| 2. Blk 350A | $945,000 | $6,136/m² |
| 3. Blk 344 | $910,000 | $6,254/m² |
| 4. Blk 348B | $810,000 | $8,259/m² |
| 5. Blk 348C | $778,944 | $8,308/m² |
| 6. Blk 348A | $778,888 | $8,466/m² |
| 7. Blk 347A | $756,444 | $8,222/m² |
| 8. Blk 347B | $736,444 | $8,020/m² |
| 9. Blk 348D | $729,000 | $8,189/m² |
| 10. Blk 419 | $715,000 | $5,602/m² |
| 11. Blk 426D | $705,000 | $6,295/m² |
| 12. Blk 426A | $628,000 | $6,174/m² |
| 13. Blk 416 | $626,500 | $5,421/m² |
| 14. Blk 443 | $622,500 | $6,534/m² |
| 15. Blk 415 | $620,000 | $5,489/m² |
Showing the top 15 of 43 blocks.
The median resale price over the last 24 months is $495,000 (4 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 $399,299–$446,673 (central estimate $422,986). Recent sales — median $458,091 — sit above that range.
The block was completed in 1987 and its 99-year lease runs from 1988.