Blk 509A Yishun Ave 4 is an HDB block in Yishun (completed in 2017, 13 storeys, 108 units). As of Jul 2026, its median resale price over the last 24 months is $708,000, about 39% above the Yishun median, from 7 sales. 32 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Yishun |
|---|---|
| Completed | 2017 |
| Lease from | 2018 |
| Storeys | 13 |
| Dwelling units | 108 |
| Unit mix (sold) | 4-room ×48 · 5-room ×60 |
| Recorded resales | 32 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 4-Room | $600,800 | $6,460/m² | 3 |
| 5-Room | $734,000 | $6,496/m² | 4 |
Median monthly rent at this block: $3,600/mo (2 rental contracts, last 12 months).
Estimated gross rental yield: ~6.1% (Yishun average: ~6.8%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 22% of Yishun blocks with recent sales.
For a typical 5-room flat here, our price model estimates $740,591–$828,457 (central estimate $784,524). Recent sales — median $723,730 — 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 |
|---|---|---|---|
| 2022 | $600,000 | $649,848 | 16 |
| 2023 | $647,500 | $668,960 | 8 |
| 2024 | $708,000 | $714,393 | 3 |
| 2025 | $696,500 | $696,500 | 4 |
| 2026 | $600,800 | $600,800 | 1 |
| Record sale | $760,000 (5-Room, 2022-05) |
|---|---|
| First recorded sale | $485,000 (2022-04) |
| Busiest year | 2022 · 16 sales |
| Total transacted | $20.2M across 32 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2026-05 | 4-Room | 04 TO 06 | 93 | $600,800 |
| 2025-11 | 4-Room | 10 TO 12 | 93 | $670,000 |
| 2025-06 | 4-Room | 04 TO 06 | 93 | $600,000 |
| 2025-06 | 5-Room | 07 TO 09 | 113 | $745,888 |
| 2025-05 | 5-Room | 04 TO 06 | 113 | $723,000 |
| 2024-11 | 5-Room | 07 TO 09 | 113 | $708,000 |
| 2024-10 | 5-Room | 10 TO 12 | 113 | $745,000 |
| 2024-06 | 5-Room | 04 TO 06 | 113 | $700,000 |
| 2023-12 | 5-Room | 13 TO 15 | 113 | $710,000 |
| 2023-11 | 5-Room | 10 TO 12 | 113 | $715,000 |
| 2023-09 | 5-Room | 04 TO 06 | 113 | $695,000 |
| 2023-08 | 5-Room | 01 TO 03 | 113 | $620,000 |
| 2023-07 | 5-Room | 04 TO 06 | 113 | $675,000 |
| 2023-06 | 4-Room | 07 TO 09 | 93 | $580,880 |
| 2023-02 | 4-Room | 04 TO 06 | 93 | $536,000 |
| 2023-01 | 4-Room | 07 TO 09 | 93 | $580,000 |
| 2022-09 | 4-Room | 04 TO 06 | 93 | $520,000 |
| 2022-09 | 4-Room | 04 TO 06 | 93 | $550,000 |
| 2022-08 | 4-Room | 04 TO 06 | 93 | $520,000 |
| 2022-08 | 5-Room | 07 TO 09 | 113 | $690,000 |
| Block | Median (24 mo) | Median $/m² |
|---|---|---|
| 1. Blk 652 | $1,200,000 | $6,630/m² |
| 2. Blk 666 | $1,120,000 | $6,829/m² |
| 3. Blk 654 | $997,500 | $6,082/m² |
| 4. Blk 661 | $915,444 | $6,117/m² |
| 5. Blk 664 | $905,000 | $5,754/m² |
| 6. Blk 509C | $750,000 | $6,637/m² |
| 7. Blk 665 | $750,000 | $5,682/m² |
| 8. Blk 860 | $716,500 | $5,873/m² |
| 9. Blk 509A | $708,000 | $6,460/m² |
| 10. Blk 859 | $705,944 | $5,786/m² |
| 11. Blk 657 | $690,000 | $5,702/m² |
| 12. Blk 863 | $680,000 | $5,656/m² |
| 13. Blk 508B | $680,000 | $6,667/m² |
| 14. Blk 864 | $667,500 | $5,890/m² |
| 15. Blk 673B | $666,000 | $6,989/m² |
Showing the top 15 of 46 blocks.
The median resale price over the last 24 months is $708,000 (7 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 $740,591–$828,457 (central estimate $784,524). Recent sales — median $723,730 — sit below that range.
The median monthly rent is $3,600/mo over the last 12 months (2 contracts).
The block was completed in 2017 and its 99-year lease runs from 2018.