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Block 509C Yishun Avenue 4

4 Room · 5 Room · Built 2018 · 90 years remaining lease · Updated Jun 2026 MOP Cleared

Block 509C Yishun Avenue 4 has 25 recorded HDB resale transactions since 2017. Latest sale: $775,000 (Jun 2026, 5 room, floors 07–09). Median $5,752/sqm. Prices up 15% over the past five years. Built 2018, 90 years lease remaining.

Latest Sale
$775,000
Jun 2026 · 5 ROOM · Floor 07-09
Median $/sqm
$5,752
Based on 25 transactions
Total Transactions
25
Since Jan 2017
5-Year Trend
▲ +15%
Median price change
Median Price ?
Top 16%
#101 / 640 Top 16%
Latest Sale ?
Top 10%
#61 / 640 Top 10%
Value ($/sqm) ?
Top 11%
#72 / 640 Top 11%
5-Year Growth ?
Top 99%
#445 / 451 Top 99%
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 90 years remaining 99 years
90 years 11 months
Remaining lease
↓ 0.16%/yr
Annual lease decay (Bala's Table)
Based on Bala's Table (SLA leasehold relativity model). At 90 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.
Rental & Yield

What this block rents for, and the gross rental yield (annual rent ÷ resale price). This block has too few rentals on record, so figures shown are the Yishun average.

Flat type Median rent /mo Gross yield Based on
4-Room $3,100 typically $2,900–$3,300 6.6% Yishun avg · block too thin
5-Room $3,400 typically $3,200–$3,600 5.7% Yishun avg · block too thin
Gross yield is annual rent before maintenance, property tax, and vacancy, so net return is lower. Renting out a whole HDB flat requires meeting the 5-year Minimum Occupation Period and HDB approval. Rents are owner-declared to HDB and unverified.
Source: HDB Renting Out of Flats, data.gov.sg (Singapore Open Data Licence).
Primary schools nearby

This block is inside the 1 km Primary 1 priority zone for 1 popular school. When a school is oversubscribed, MOE ballots by home–school distance, and homes within 1 km are drawn first.

Compare homes near all 50 popular schools
Distances are straight-line estimates from this block, indicative only. MOE measures from its own school reference point, so confirm the exact distance before relying on it.
All Transactions
Date Floor Type Area Price $/sqm
Jun 2026 07 TO 09 5 ROOM 113 sqm $775,000 $6,858
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
Showing 20 of 25 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 90 years remaining on its 99-year lease. The block contains 4 room, 5 room flats, with resale prices ranging from $473,000 to $775,000 based on 25 recorded transactions since January 2017. The most recent transaction was a 5 room flat on storeys 07 TO 09 sold for $775,000 in 2026-06. The current median price per square metre is $5,752. 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 0.9562, 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 $775,000 for a 5 room flat in 2026-06. The median price per square metre across all flat types is $5,752, based on 25 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 90 years and 11 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 $775,000 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 $560,000, with the most recent sale at $775,000 in 2026-06.

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