Blk 423 Yishun Ave 11
Completed 1987 · 12 storeys · 110 flats · 61 years 07 months remaining · 26 resale transactions on record · median household income in Yishun: $7,500/mo (lowest quartile island-wide)
12 storeys · completed 1987
What the record shows
A 4-room here sold for $490,000 in Feb 2026. The same flat type in this block averaged $358,667 in 2021 - a gain of $131,333 - about $72 a day while the owner slept.
In this block, 4-room flats from floor 8 up have sold for a median of $445,000 - $70,000 more than floors 4 and below, same flat type, same block.
This block crosses 60 years remaining in 2027 - 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).
A executive on Yishun Ave 11 has already fetched $953,000 - 95% of the way to a million-dollar flat.
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 | $3,000/mo | $3,000–$3,000 | $3,100/mo | - | 1 |
Price trend
median PSF by year · ━ this block · ╌ Yishun · gaps = years with no sales here
Every recent sale HDB official record, latest 26
| Month | Type | Storey | Area (sqm) | Price | PSF | Lease left |
|---|---|---|---|---|---|---|
| Feb 2026 | 4 ROOM | 07 to 09 | 84 | $490,000 | $542 | 61y 07m |
| Dec 2025 | 4 ROOM | 07 to 09 | 104 | $550,000 | $491 | 61y 09m |
| Mar 2025 | 4 ROOM | 10 to 12 | 84 | $500,000 | $553 | 62y 06m |
| Mar 2025 | 4 ROOM | 01 to 03 | 84 | $468,000 | $518 | 62y 06m |
| Jun 2024 | 4 ROOM | 07 to 09 | 84 | $458,000 | $507 | 63y 04m |
| May 2023 | 4 ROOM | 10 to 12 | 84 | $410,000 | $453 | 64y 04m |
| Jan 2023 | 4 ROOM | 07 to 09 | 84 | $405,000 | $448 | 64y 08m |
| Aug 2022 | 4 ROOM | 07 to 09 | 84 | $325,000 | $359 | 65y 01m |
| Aug 2022 | 4 ROOM | 01 to 03 | 84 | $375,000 | $415 | 65y 01m |
| Aug 2022 | 4 ROOM | 10 to 12 | 104 | $445,000 | $398 | 65y 01m |
| Aug 2021 | 4 ROOM | 07 to 09 | 84 | $395,000 | $437 | 66y 01m |
| Aug 2021 | 4 ROOM | 01 to 03 | 84 | $349,000 | $386 | 66y 01m |
| Apr 2021 | 4 ROOM | 04 to 06 | 84 | $332,000 | $367 | 66y 04m |
| Feb 2020 | 4 ROOM | 01 to 03 | 104 | $317,000 | $283 | 67y 06m |
| Feb 2020 | 4 ROOM | 04 to 06 | 84 | $283,000 | $313 | 67y 07m |
| Aug 2019 | 4 ROOM | 04 to 06 | 84 | $270,000 | $299 | 68y |
| Aug 2019 | 4 ROOM | 01 to 03 | 84 | $265,000 | $293 | 68y |
| Jul 2019 | 4 ROOM | 10 to 12 | 84 | $280,000 | $310 | 68y 01m |
| Mar 2019 | 4 ROOM | 04 to 06 | 104 | $333,000 | $297 | 68y 05m |
| Mar 2019 | 4 ROOM | 07 to 09 | 84 | $305,000 | $337 | 68y 05m |
| Jul 2018 | 4 ROOM | 07 to 09 | 84 | $290,000 | $321 | 69y 02m |
| Feb 2018 | 4 ROOM | 04 to 06 | 104 | $375,000 | $335 | 69y 07m |
| Dec 2017 | 4 ROOM | 07 to 09 | 84 | $315,000 | $348 | 69y 08m |
| Nov 2017 | 4 ROOM | 07 to 09 | 84 | $310,000 | $343 | 69y 09m |
| Jul 2017 | 4 ROOM | 04 to 06 | 84 | $320,000 | $354 | 70y 01m |
| Apr 2017 | 4 ROOM | 01 to 03 | 84 | $290,000 | $321 | 70y 04m |
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.
built 2014 · 27 more lease years than this block
built 2014 · 27 more lease years than this block
4-room median $14k above this block · 6 vs 4 sales
4-room median $5k above this block · 7 vs 4 sales
4-room median $73k above this block · 3 vs 4 sales
4-room median $75k above this block · 7 vs 4 sales
Condos nearby
The private premium, measured: the nearest condo trades at 2.2×this block’s PSF.
Grounded in this block’s own resale record, trend and lease - ask away.