Blk 505 Serangoon Nth Ave 4 is an HDB block in Serangoon (completed in 1992, 14 storeys, 76 units). As of Jul 2026, its median resale price over the last 24 months is $770,000, about 1% below the Serangoon median, from 1 sales. 72 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Serangoon |
|---|---|
| Completed | 1992 |
| Lease from | 1992 |
| Storeys | 14 |
| Dwelling units | 76 |
| Unit mix (sold) | 5-room ×76 |
| Recorded resales | 72 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 5-Room | $770,000 | $6,210/m² | 1 |
Median monthly rent at this block: $3,650/mo (2 rental contracts, last 12 months).
Estimated gross rental yield: ~5.7% (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 83% of Serangoon blocks with recent sales.
For a typical 5-room flat here, our price model estimates $671,534–$751,208 (central estimate $711,371). Recent sales — median $747,166 — 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 | $388,000 | $640,235 | 1 |
| 1997 | $432,500 | $689,991 | 8 |
| 1998 | $401,000 | $641,482 | 10 |
| 1999 | $395,500 | $632,533 | 6 |
| 2000 | $399,400 | $630,269 | 6 |
| 2001 | $360,000 | $562,395 | 1 |
| 2002 | $317,500 | $497,951 | 4 |
| 2003 | $311,000 | $485,388 | 3 |
| 2004 | $320,000 | $491,221 | 1 |
| 2005 | $281,400 | $429,934 | 4 |
| 2006 | $262,000 | $396,464 | 1 |
| 2007 | $281,500 | $417,169 | 2 |
| 2008 | $323,000 | $448,884 | 1 |
| 2009 | $380,000 | $525,011 | 3 |
| 2010 | $465,000 | $624,774 | 3 |
| 2011 | $494,000 | $630,620 | 2 |
| 2014 | $515,000 | $607,828 | 2 |
| 2017 | $470,000 | $557,383 | 1 |
| 2018 | $519,000 | $612,807 | 4 |
| 2019 | $485,000 | $569,430 | 1 |
| 2021 | $607,500 | $698,313 | 2 |
| 2022 | $645,000 | $698,587 | 1 |
| 2023 | $713,000 | $736,631 | 2 |
| 2024 | $745,000 | $751,727 | 3 |
| Record sale | $770,000 (5-Room, 2024-12) |
|---|---|
| First recorded sale | $388,000 (1995-02) |
| Busiest year | 1998 · 10 sales |
| 10-year change (real) | +24% (+2.1%/yr, 2014→2024) |
| Total transacted | $30.9M across 72 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2024-12 | 5-Room | 10 TO 12 | 124 | $770,000 |
| 2024-07 | 5-Room | 04 TO 06 | 124 | $745,000 |
| 2024-01 | 5-Room | 10 TO 12 | 124 | $710,000 |
| 2023-08 | 5-Room | 07 TO 09 | 124 | $738,000 |
| 2023-03 | 5-Room | 04 TO 06 | 124 | $688,000 |
| 2022-12 | 5-Room | 04 TO 06 | 124 | $645,000 |
| 2021-08 | 5-Room | 07 TO 09 | 125 | $650,000 |
| 2021-06 | 5-Room | 04 TO 06 | 124 | $565,000 |
| 2019-11 | 5-Room | 04 TO 06 | 125 | $485,000 |
| 2018-10 | 5-Room | 07 TO 09 | 124 | $523,000 |
| 2018-07 | 5-Room | 10 TO 12 | 124 | $515,000 |
| 2018-02 | 5-Room | 07 TO 09 | 124 | $530,000 |
| 2018-01 | 5-Room | 04 TO 06 | 124 | $445,000 |
| 2017-02 | 5-Room | 07 TO 09 | 124 | $470,000 |
| 2014-12 | 5-Room | 07 TO 09 | 125 | $495,000 |
| 2014-07 | 5-Room | 10 TO 12 | 124 | $535,000 |
| 2011-11 | 5-Room | 04 TO 06 | 124 | $500,000 |
| 2011-06 | 5-Room | 07 TO 09 | 124 | $488,000 |
| 2010-10 | 5-Room | 04 TO 06 | 124 | $472,000 |
| 2010-10 | 5-Room | 13 TO 15 | 124 | $465,000 |
| 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 $770,000 (1 sales, as of Jul 2026). See the by-type table above for 3-room vs 4-room medians.
For a typical 5-room flat here, our price model estimates $671,534–$751,208 (central estimate $711,371). Recent sales — median $747,166 — sit within that range.
The median monthly rent is $3,650/mo over the last 12 months (2 contracts).
The block was completed in 1992 and its 99-year lease runs from 1992.