Block 509 Serangoon North Avenue 4
| Date | Floor | Type | Area | Price | $/sqm |
|---|---|---|---|---|---|
| Jan 2026 | 04 TO 06 | 4 ROOM | 101 sqm | $660,000 | $6,535 |
| Nov 2025 | 04 TO 06 | 4 ROOM | 101 sqm | $610,000 | $6,040 |
| Jul 2025 | 01 TO 03 | 4 ROOM | 101 sqm | $623,000 | $6,168 |
| Jun 2025 | 07 TO 09 | 4 ROOM | 102 sqm | $646,888 | $6,342 |
| Apr 2024 | 04 TO 06 | 4 ROOM | 101 sqm | $600,000 | $5,941 |
| Apr 2024 | 04 TO 06 | 5 ROOM | 120 sqm | $690,000 | $5,750 |
| Jan 2023 | 04 TO 06 | 4 ROOM | 102 sqm | $520,000 | $5,098 |
| Dec 2022 | 04 TO 06 | 4 ROOM | 102 sqm | $520,000 | $5,098 |
| Jan 2021 | 04 TO 06 | 5 ROOM | 120 sqm | $535,000 | $4,458 |
| Mar 2020 | 01 TO 03 | 4 ROOM | 102 sqm | $380,000 | $3,725 |
| Jan 2020 | 04 TO 06 | 5 ROOM | 119 sqm | $540,000 | $4,538 |
| Mar 2019 | 04 TO 06 | 4 ROOM | 101 sqm | $400,000 | $3,960 |
| Nov 2018 | 01 TO 03 | 4 ROOM | 102 sqm | $378,000 | $3,706 |
| Aug 2018 | 01 TO 03 | 5 ROOM | 120 sqm | $476,000 | $3,967 |
| Aug 2018 | 01 TO 03 | 5 ROOM | 120 sqm | $525,000 | $4,375 |
| Apr 2018 | 04 TO 06 | 5 ROOM | 120 sqm | $520,000 | $4,333 |
| Mar 2018 | 04 TO 06 | 4 ROOM | 102 sqm | $403,000 | $3,951 |
| Sep 2017 | 07 TO 09 | 5 ROOM | 120 sqm | $510,000 | $4,250 |
| Jul 2017 | 01 TO 03 | 4 ROOM | 101 sqm | $375,000 | $3,713 |
About Block 509 Serangoon North Avenue 4
Block 509 at Serangoon North Avenue 4 is a residential HDB block in Serangoon, Singapore, built in 1997 with approximately 70 years remaining on its 99-year lease. The block contains 4 room, 5 room flats, with resale prices ranging from $375,000 to $690,000 based on 19 recorded transactions since January 2017. The most recent transaction was a 4 room flat on storeys 04 TO 06 sold for $660,000 in 2026-01. The current median price per square metre is $4,458. Under Bala's Table (the Singapore Land Authority's official leasehold valuation model), the block's leasehold relativity ratio is 0.9115, with an annual lease decay rate of approximately 0.34%. 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 509 Serangoon North Avenue 4 worth?
The most recent resale transaction at Block 509 Serangoon North Avenue 4 was $660,000 for a 4 room flat in 2026-01. The median price per square metre across all flat types is $4,458, based on 19 transactions since January 2017. Data sourced from data.gov.sg.
What is the remaining lease for Block 509 Serangoon North Avenue 4?
Block 509 Serangoon North Avenue 4 was built in 1997 and has approximately 70 years and 6 months remaining on its 99-year lease. Under Bala's Table (the SLA leasehold valuation model), the annual lease decay rate is 0.34%, meaning the leasehold value decreases by approximately 0.34% per year at the current remaining lease.
What flat types are available at Block 509 Serangoon North Avenue 4?
Block 509 Serangoon North Avenue 4 in Serangoon contains 4 room, 5 room flats. Resale prices range from $375,000 to $690,000 based on historical transaction records from data.gov.sg.