Blk 509C Yishun Avenue 4 — HDB resale prices
HDB resale prices, Yishun · 4-Room, 5-Room · built 2016
median resale price, last 24 months
4 sales in that window · as of Sep 2026
How it compares
Blk 509C Yishun Avenue 4 is an HDB block in Yishun (completed in 2016, 13 storeys, 96 units). As of Sep 2026, its median resale price over the last 24 months is $762,500, about 42% above the Yishun median, from 4 sales. 26 resale transactions have been recorded here since 1990.
Price by year
At a glance
Unit mix (sold): 4-room ×72 · 5-room ×24
Prices by flat type — last 24 months (as of Sep 2026)
On price per square metre, this block is cheaper than 11% of Yishun blocks with recent sales.
What the price model says
For a typical 4-room flat here, our price model estimates $610,619–$682,655 (central estimate $646,637). Recent sales — median $574,388 — sit below that range. The model explains 94% of resale prices with a typical error of ±6%. Indicative only — not an official valuation.
Median resale price by year
| Year | Median (nominal) | Median (today's $) | Sales |
|---|---|---|---|
| 2021 | $500,000 | $574,743 | 1 |
| 2022 | $535,000 | $579,448 | 10 |
| 2023 | $560,000 | $578,560 | 7 |
| 2024 | $592,944 | $598,298 | 4 |
| 2026 | $762,500 | $762,500 | 4 |
Records
| Record sale | $775,000 (5-Room, 2026-06) |
|---|---|
| First recorded sale | $500,000 (2021-12) |
| Busiest year | 2022 · 10 sales |
| Total transacted | $15.2M across 26 sales |
Recent resale transactions
| Month | Flat type | Storey | Area | Price |
|---|---|---|---|---|
| 2026-06 | 5-Room | 10–12 | 113 m² | $775,000 |
| 2026-06 | 5-Room | 07–09 | 113 m² | $775,000 |
| 2026-04 | 4-Room | 01–03 | 93 m² | $575,000 |
| 2026-03 | 5-Room | 10–12 | 113 m² | $750,000 |
| 2024-08 | 4-Room | 01–03 | 93 m² | $555,000 |
| 2024-07 | 5-Room | 04–06 | 113 m² | $706,888 |
| 2024-07 | 4-Room | 10–12 | 93 m² | $605,000 |
| 2024-03 | 4-Room | 07–09 | 93 m² | $580,888 |
| 2023-11 | 4-Room | 10–12 | 93 m² | $560,000 |
| 2023-08 | 5-Room | 01–03 | 113 m² | $628,000 |
| 2023-06 | 5-Room | 01–03 | 113 m² | $615,000 |
| 2023-06 | 4-Room | 10–12 | 93 m² | $565,000 |
| 2023-05 | 4-Room | 07–09 | 93 m² | $520,000 |
| 2023-02 | 4-Room | 04–06 | 93 m² | $500,000 |
| 2023-01 | 4-Room | 07–09 | 93 m² | $520,000 |
| 2022-10 | 4-Room | 13–15 | 93 m² | $574,000 |
| 2022-07 | 4-Room | 07–09 | 93 m² | $555,000 |
| 2022-07 | 4-Room | 13–15 | 93 m² | $530,000 |
| 2022-06 | 5-Room | 07–09 | 113 m² | $650,000 |
| 2022-06 | 4-Room | 04–06 | 93 m² | $520,000 |
Yishun Avenue 4 blocks ranked by price
Showing the top 15 of 45 priced blocks.
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Quick answers
How much does a flat at Blk 509C Yishun Avenue 4 cost?
The median resale price over the last 24 months is $762,500 (4 sales, as of Sep 2026). See the by-type table above for 3-room vs 4-room medians.
Is Blk 509C Yishun Avenue 4 fairly priced?
For a typical 4-room flat here, our price model estimates $610,619–$682,655 (central estimate $646,637). Recent sales — median $574,388 — sit below that range.
How old is Blk 509C Yishun Avenue 4?
The block was completed in 2016 and its 99-year lease runs from 2018.