Blk 523 Serangoon Nth Ave 4 is an HDB block in Serangoon (completed in 1990, 12 storeys, 88 units). As of Jul 2026, its median resale price over the last 24 months is $827,500, about 6% above the Serangoon median, from 4 sales. 118 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Serangoon |
|---|---|
| Completed | 1990 |
| Lease from | 1992 |
| Storeys | 12 |
| Dwelling units | 88 |
| Unit mix (sold) | 4-room ×48 · 5-room ×40 |
| Recorded resales | 118 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 4-Room | $670,000 | $6,442/m² | 1 |
| 5-Room | $830,000 | $6,803/m² | 3 |
Median monthly rent at this block: $3,400/mo (3 rental contracts, last 12 months).
Estimated gross rental yield: ~4.9% (Serangoon average: ~5.1%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 56% of Serangoon blocks with recent sales.
For a typical 4-room flat here, our price model estimates $565,948–$633,094 (central estimate $599,521). Recent sales — median $560,949 — sit below 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 |
|---|---|---|---|
| 1994 | $105,000 | $176,248 | 1 |
| 1995 | $348,000 | $574,231 | 4 |
| 1996 | $436,000 | $709,645 | 10 |
| 1997 | $415,000 | $662,072 | 5 |
| 1998 | $331,000 | $529,502 | 6 |
| 1999 | $339,500 | $542,971 | 7 |
| 2000 | $285,500 | $450,530 | 4 |
| 2001 | $258,000 | $403,050 | 3 |
| 2002 | $234,500 | $367,778 | 8 |
| 2003 | $227,500 | $355,067 | 4 |
| 2004 | $185,000 | $283,987 | 1 |
| 2005 | $215,000 | $328,485 | 5 |
| 2006 | $232,000 | $351,067 | 1 |
| 2007 | $284,000 | $420,874 | 6 |
| 2008 | $350,000 | $486,407 | 7 |
| 2009 | $339,750 | $469,401 | 6 |
| 2010 | $407,000 | $546,845 | 7 |
| 2011 | $407,500 | $520,198 | 2 |
| 2012 | $532,500 | $649,991 | 2 |
| 2013 | $460,000 | $548,528 | 3 |
| 2014 | $428,000 | $505,146 | 3 |
| 2016 | $450,000 | $536,743 | 3 |
| 2017 | $480,000 | $569,243 | 1 |
| 2018 | $510,000 | $602,180 | 3 |
| 2019 | $492,500 | $578,236 | 2 |
| 2020 | $463,444 | $545,060 | 2 |
| 2021 | $504,000 | $579,341 | 4 |
| 2022 | $500,000 | $541,540 | 1 |
| 2023 | $650,000 | $671,543 | 3 |
| 2025 | $827,500 | $827,500 | 4 |
| Record sale | $830,888 (5-Room, 2025-04) |
|---|---|
| First recorded sale | $105,000 (1994-01) |
| Busiest year | 1996 · 10 sales |
| Total transacted | $45.2M across 118 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2025-12 | 5-Room | 04 TO 06 | 122 | $825,000 |
| 2025-08 | 4-Room | 10 TO 12 | 104 | $670,000 |
| 2025-06 | 5-Room | 04 TO 06 | 122 | $830,000 |
| 2025-04 | 5-Room | 07 TO 09 | 122 | $830,888 |
| 2023-11 | 5-Room | 01 TO 03 | 122 | $667,000 |
| 2023-03 | 4-Room | 07 TO 09 | 104 | $520,000 |
| 2023-03 | 5-Room | 01 TO 03 | 122 | $650,000 |
| 2022-07 | 4-Room | 07 TO 09 | 104 | $500,000 |
| 2021-11 | 4-Room | 10 TO 12 | 104 | $488,000 |
| 2021-11 | 4-Room | 01 TO 03 | 104 | $520,000 |
| 2021-06 | 5-Room | 07 TO 09 | 122 | $580,000 |
| 2021-04 | 4-Room | 04 TO 06 | 104 | $475,000 |
| 2020-12 | 5-Room | 01 TO 03 | 122 | $468,888 |
| 2020-06 | 5-Room | 01 TO 03 | 122 | $458,000 |
| 2019-12 | 5-Room | 04 TO 06 | 122 | $465,000 |
| 2019-07 | 5-Room | 07 TO 09 | 122 | $520,000 |
| 2018-08 | 5-Room | 07 TO 09 | 122 | $528,000 |
| 2018-04 | 5-Room | 04 TO 06 | 122 | $485,000 |
| 2018-03 | 5-Room | 04 TO 06 | 122 | $510,000 |
| 2017-08 | 5-Room | 04 TO 06 | 122 | $480,000 |
| Block | Median (24 mo) | Median $/m² |
|---|---|---|
| 1. Blk 519 | $1,193,084 | $8,033/m² |
| 2. Blk 506A | $1,130,000 | $7,740/m² |
| 3. Blk 527 | $1,092,500 | $7,483/m² |
| 4. Blk 526 | $1,083,000 | $7,318/m² |
| 5. Blk 520 | $1,059,000 | $7,156/m² |
| 6. Blk 537 | $1,059,000 | $7,204/m² |
| 7. Blk 525 | $1,038,888 | $7,000/m² |
| 8. Blk 542 | $1,015,444 | $6,908/m² |
| 9. Blk 506 | $1,010,000 | $6,966/m² |
| 10. Blk 539 | $1,008,944 | $6,864/m² |
| 11. Blk 535 | $983,888 | $6,693/m² |
| 12. Blk 506B | $970,000 | $6,644/m² |
| 13. Blk 507 | $840,000 | $6,942/m² |
| 14. Blk 523 | $827,500 | $6,783/m² |
| 15. Blk 510 | $808,000 | $6,790/m² |
Showing the top 15 of 40 blocks.
The median resale price over the last 24 months is $827,500 (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 $565,948–$633,094 (central estimate $599,521). Recent sales — median $560,949 — sit below that range.
The median monthly rent is $3,400/mo over the last 12 months (3 contracts).
The block was completed in 1990 and its 99-year lease runs from 1992.