Blk 509A Yishun Avenue 4 — HDB resale prices
HDB resale prices, Yishun · 4-Room, 5-Room · built 2017
median resale price, last 24 months
8 sales in that window · as of Sep 2026
How it compares
Blk 509A Yishun Avenue 4 is an HDB block in Yishun (completed in 2017, 13 storeys, 108 units). As of Sep 2026, its median resale price over the last 24 months is $676,000, about 26% above the Yishun median, from 8 sales. 34 resale transactions have been recorded here since 1990.
Price by year
At a glance
Unit mix (sold): 4-room ×48 · 5-room ×60
Prices by flat type — last 24 months (as of Sep 2026)
Median monthly rent at this block: $3,400/mo (1 rental contracts, last 12 months).
Estimated gross rental yield: ~6.0% (Yishun average: ~6.6%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 23% of Yishun blocks with recent sales.
What the price model says
For a typical 5-room flat here, our price model estimates $743,413–$831,114 (central estimate $787,263). Recent sales — median $723,000 — 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 |
|---|---|---|---|
| 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 | 3 |
Records
| Record sale | $760,000 (5-Room, 2022-05) |
|---|---|
| First recorded sale | $485,000 (2022-04) |
| Busiest year | 2022 · 16 sales |
| Total transacted | $21.5M across 34 sales |
Recent resale transactions
| Month | Flat type | Storey | Area | Price |
|---|---|---|---|---|
| 2026-09 | 5-Room | 04–06 | 113 m² | $682,000 |
| 2026-07 | 4-Room | 04–06 | 93 m² | $580,000 |
| 2026-05 | 4-Room | 04–06 | 93 m² | $600,800 |
| 2025-11 | 4-Room | 10–12 | 93 m² | $670,000 |
| 2025-06 | 5-Room | 07–09 | 113 m² | $745,888 |
| 2025-06 | 4-Room | 04–06 | 93 m² | $600,000 |
| 2025-05 | 5-Room | 04–06 | 113 m² | $723,000 |
| 2024-11 | 5-Room | 07–09 | 113 m² | $708,000 |
| 2024-10 | 5-Room | 10–12 | 113 m² | $745,000 |
| 2024-06 | 5-Room | 04–06 | 113 m² | $700,000 |
| 2023-12 | 5-Room | 13–15 | 113 m² | $710,000 |
| 2023-11 | 5-Room | 10–12 | 113 m² | $715,000 |
| 2023-09 | 5-Room | 04–06 | 113 m² | $695,000 |
| 2023-08 | 5-Room | 01–03 | 113 m² | $620,000 |
| 2023-07 | 5-Room | 04–06 | 113 m² | $675,000 |
| 2023-06 | 4-Room | 07–09 | 93 m² | $580,880 |
| 2023-02 | 4-Room | 04–06 | 93 m² | $536,000 |
| 2023-01 | 4-Room | 07–09 | 93 m² | $580,000 |
| 2022-09 | 4-Room | 04–06 | 93 m² | $550,000 |
| 2022-09 | 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 509A Yishun Avenue 4 cost?
The median resale price over the last 24 months is $676,000 (8 sales, as of Sep 2026). See the by-type table above for 3-room vs 4-room medians.
Is Blk 509A Yishun Avenue 4 fairly priced?
For a typical 5-room flat here, our price model estimates $743,413–$831,114 (central estimate $787,263). Recent sales — median $723,000 — sit below that range.
What is the rent at Blk 509A Yishun Avenue 4?
The median monthly rent is $3,400/mo over the last 12 months (1 contracts).
How old is Blk 509A Yishun Avenue 4?
The block was completed in 2017 and its 99-year lease runs from 2018.