Blk 509A Yishun Ave 4
Completed 2017 · 13 storeys · 108 flats · 90 years 10 months remaining · 33 resale transactions on record · median household income in Yishun: $7,500/mo (lowest quartile island-wide)
13 storeys · completed 2017
What the record shows
A 4-room here sold for $580,000 in Jul 2026. The same flat type in this block averaged $510,000 in 2022 - a gain of $70,000 - about $48 a day while the owner slept.
In this block, 5-room flats from floor 9 up have sold for a median of $707,500 - $22,500 more than floors 4 and below, same flat type, same block.
This block crosses 60 years remaining in 2057 - the line where CPF usage rules begin tightening for buyers. In Yishun over the last two years, flats below that line sold at a median 7% below their younger neighbours' PSF (1,008 sales).
Across Yishun, roughly 4,444 flats in newly-completed blocks reach the end of MOP between 2026 and 2028 - new sellers entering this market.
Rent check
What flats in this block actually rented for in the last 12 months - official approvals, not listings. If you’re quoted much more, you have a number to negotiate with.
| Type | Block median | Range | Yishun median | Gross yield | Rented |
|---|---|---|---|---|---|
| 4-ROOM | $3,600/mo | $3,400–$3,800 | $3,100/mo | - | 2 |
Price trend
median PSF by year · ━ this block · ╌ Yishun · gaps = years with no sales here
The height gradient
every sale in 5 years, plotted by starting floor · 33 sales - do higher floors really fetch more here?
Every recent sale HDB official record, latest 30
| Month | Type | Storey | Area (sqm) | Price | PSF | Lease left |
|---|---|---|---|---|---|---|
| Jul 2026 | 4 ROOM | 04 to 06 | 93 | $580,000 | $579 | 90y 10m |
| May 2026 | 4 ROOM | 04 to 06 | 93 | $600,800 | $600 | 91y |
| Nov 2025 | 4 ROOM | 10 to 12 | 93 | $670,000 | $669 | 91y 05m |
| Jun 2025 | 4 ROOM | 04 to 06 | 93 | $600,000 | $599 | 91y 11m |
| Jun 2025 | 5 ROOM | 07 to 09 | 113 | $745,888 | $613 | 91y 11m |
| May 2025 | 5 ROOM | 04 to 06 | 113 | $723,000 | $594 | 92y |
| Nov 2024 | 5 ROOM | 07 to 09 | 113 | $708,000 | $582 | 92y 06m |
| Oct 2024 | 5 ROOM | 10 to 12 | 113 | $745,000 | $613 | 92y 07m |
| Jun 2024 | 5 ROOM | 04 to 06 | 113 | $700,000 | $576 | 92y 11m |
| Dec 2023 | 5 ROOM | 13 to 15 | 113 | $710,000 | $584 | 93y 05m |
| Nov 2023 | 5 ROOM | 10 to 12 | 113 | $715,000 | $588 | 93y 06m |
| Sept 2023 | 5 ROOM | 04 to 06 | 113 | $695,000 | $571 | 93y 08m |
| Aug 2023 | 5 ROOM | 01 to 03 | 113 | $620,000 | $510 | 93y 09m |
| Jul 2023 | 5 ROOM | 04 to 06 | 113 | $675,000 | $555 | 93y 10m |
| Jun 2023 | 4 ROOM | 07 to 09 | 93 | $580,880 | $580 | 93y 11m |
| Feb 2023 | 4 ROOM | 04 to 06 | 93 | $536,000 | $535 | 94y 03m |
| Jan 2023 | 4 ROOM | 07 to 09 | 93 | $580,000 | $579 | 94y 04m |
| Sept 2022 | 4 ROOM | 04 to 06 | 93 | $550,000 | $549 | 94y 08m |
| Sept 2022 | 4 ROOM | 04 to 06 | 93 | $520,000 | $519 | 94y 08m |
| Aug 2022 | 5 ROOM | 07 to 09 | 113 | $690,000 | $567 | 94y 09m |
| Aug 2022 | 4 ROOM | 04 to 06 | 93 | $520,000 | $519 | 94y 09m |
| Jul 2022 | 4 ROOM | 07 to 09 | 93 | $565,000 | $564 | 94y 10m |
| Jul 2022 | 5 ROOM | 10 to 12 | 113 | $660,000 | $543 | 94y 10m |
| Jun 2022 | 5 ROOM | 10 to 12 | 113 | $680,000 | $559 | 94y 11m |
| Jun 2022 | 5 ROOM | 04 to 06 | 113 | $638,000 | $525 | 94y 10m |
| May 2022 | 5 ROOM | 10 to 12 | 113 | $760,000 | $625 | 94y 11m |
| May 2022 | 4 ROOM | 04 to 06 | 93 | $510,000 | $509 | 95y |
| Apr 2022 | 4 ROOM | 07 to 09 | 93 | $520,000 | $519 | 95y 01m |
| Apr 2022 | 5 ROOM | 13 to 15 | 113 | $705,000 | $580 | 95y |
| Apr 2022 | 5 ROOM | 10 to 12 | 113 | $668,888 | $550 | 95y |
Who lives in Yishun
Census of Population 2020 · planning-area aggregates · SingStat via data.gov.sg
The neighbourhood
What sits around this address - distances computed from official OneMap and LTA records.
Around this block
The nearest blocks by actual distance - street names are postal artifacts, so true neighbours often sit on a different road. Price gaps are median-vs-median on the flat type both blocks actually trade.
4-room median $22k above this block · 6 vs 4 sales
4-room median within $5k of this block
5-room median $29k above this block · 4 vs 4 sales
4-room median $38k above this block · 5 vs 4 sales
built 1987 · 30 fewer lease years than this block
4-room median $25k above this block · 6 vs 4 sales
Condos nearby
The private premium, measured: the nearest condo trades at 1.7×this block’s PSF.
Grounded in this block’s own resale record, trend and lease - ask away.