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Block 509C Yishun Avenue 4

4 Room · 5 Room · Built 2018 · 91 years remaining lease MOP Cleared
Latest Sale
$575,000
Apr 2026 · 4 ROOM · Floor 01-03
Median $/sqm
$5,726
Based on 24 transactions
Total Transactions
24
Since Jan 2017
5-Year Trend
▲ +15%
Median price change
Median Price ?
Top 16%
#102 / 640 Top 16%
Latest Sale ?
Top 38%
#242 / 640 Top 38%
Value ($/sqm) ?
Top 12%
#74 / 640 Top 12%
5-Year Growth ?
Top 98%
#431 / 439 Top 98%
Price Trend
Source: HDB Resale Flat Prices, data.gov.sg. Updated monthly.
What's Your Unit Worth?
HDB records transactions in 3-storey bands (e.g. 01 TO 03). Pick the band closest to your floor.
Estimated Market Value
--
Future Value Projection
Market Appreciation
+2.8%/yr
vs
Lease Decay
−0.16%/yr
Growth assumption
Based on this block’s +15% growth over 5 years
Estimated value in --
--
Market appreciation --
Lease decay --
Net effect --
Projection uses Bala's Table (SLA leasehold model) for lease decay and your selected growth rate for appreciation. Lease decay is non-linear and accelerates as remaining lease shortens. Past growth does not guarantee future performance. Not financial advice.
Lease Decay Projection
0 years 91 years remaining 99 years
91 years 1 months
Remaining lease
↓ 0.16%/yr
Annual lease decay (Bala's Table)
Based on Bala's Table (SLA leasehold relativity model). At 91 years remaining, decay is gradual (~0.16%/yr). It accelerates significantly below 40 years. Market appreciation (historically 2-4%/yr) currently outpaces lease decay for this block.
All Transactions
Date Floor Type Area Price $/sqm
Apr 2026 01 TO 03 4 ROOM 93 sqm $575,000 $6,183
Mar 2026 10 TO 12 5 ROOM 113 sqm $750,000 $6,637
Aug 2024 01 TO 03 4 ROOM 93 sqm $555,000 $5,968
Jul 2024 10 TO 12 4 ROOM 93 sqm $605,000 $6,505
Jul 2024 04 TO 06 5 ROOM 113 sqm $706,888 $6,256
Mar 2024 07 TO 09 4 ROOM 93 sqm $580,888 $6,246
Nov 2023 10 TO 12 4 ROOM 93 sqm $560,000 $6,022
Aug 2023 01 TO 03 5 ROOM 113 sqm $628,000 $5,558
Jun 2023 10 TO 12 4 ROOM 93 sqm $565,000 $6,075
Jun 2023 01 TO 03 5 ROOM 113 sqm $615,000 $5,442
May 2023 07 TO 09 4 ROOM 93 sqm $520,000 $5,591
Feb 2023 04 TO 06 4 ROOM 93 sqm $500,000 $5,376
Jan 2023 07 TO 09 4 ROOM 93 sqm $520,000 $5,591
Oct 2022 13 TO 15 4 ROOM 93 sqm $574,000 $6,172
Jul 2022 13 TO 15 4 ROOM 93 sqm $530,000 $5,699
Jul 2022 07 TO 09 4 ROOM 93 sqm $555,000 $5,968
Jun 2022 01 TO 03 4 ROOM 93 sqm $478,000 $5,140
Jun 2022 04 TO 06 4 ROOM 93 sqm $520,000 $5,591
Jun 2022 07 TO 09 5 ROOM 113 sqm $650,000 $5,752
Mar 2022 10 TO 12 4 ROOM 93 sqm $528,000 $5,677
Showing 20 of 24 transactions
Source: HDB Resale Flat Prices, data.gov.sg (Singapore Open Data Licence).

About Block 509C Yishun Avenue 4

Block 509C at Yishun Avenue 4 is a residential HDB block in Yishun, Singapore, built in 2018 with approximately 91 years remaining on its 99-year lease. The block contains 4 room, 5 room flats, with resale prices ranging from $473,000 to $750,000 based on 24 recorded transactions since January 2017. The most recent transaction was a 4 room flat on storeys 01 TO 03 sold for $575,000 in 2026-04. The current median price per square metre is $5,726. Over the past five years, resale prices at this block have increased by approximately 15%. Under Bala's Table (the Singapore Land Authority's official leasehold valuation model), the block's leasehold relativity ratio is 0.9564, with an annual lease decay rate of approximately 0.16%. All transaction data is sourced from Singapore's data.gov.sg open data platform and is updated monthly.

Frequently Asked Questions

How much is an HDB flat at Block 509C Yishun Avenue 4 worth?

The most recent resale transaction at Block 509C Yishun Avenue 4 was $575,000 for a 4 room flat in 2026-04. The median price per square metre across all flat types is $5,726, based on 24 transactions since January 2017. Data sourced from data.gov.sg.

What is the remaining lease for Block 509C Yishun Avenue 4?

Block 509C Yishun Avenue 4 was built in 2018 and has approximately 91 years and 1 months remaining on its 99-year lease. Under Bala's Table (the SLA leasehold valuation model), the annual lease decay rate is 0.16%, meaning the leasehold value decreases by approximately 0.16% per year at the current remaining lease.

What flat types are available at Block 509C Yishun Avenue 4?

Block 509C Yishun Avenue 4 in Yishun contains 4 room, 5 room flats. Resale prices range from $473,000 to $750,000 based on historical transaction records from data.gov.sg.

Have HDB prices at Block 509C Yishun Avenue 4 gone up or down?

Resale prices at Block 509C Yishun Avenue 4 have increased by approximately 15% over the past five years. The current median price is $557,500, with the most recent sale at $575,000 in 2026-04.

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