4-Room resale prices at Blk 509 Serangoon Nth Ave 4
Resales from Jan 2017 to Jan 2026 · single-unit sales only
What do 4-room flats at Blk 509 Serangoon Nth Ave 4 sell for?
Median price since Jan 201725th to 75th percentile · S$5,098 psm median (S$3,895 psm – S$6,072 psm) · from 12 recorded sales
12 recorded resales of 4-room flats at Blk 509 Serangoon Nth Ave 4 since Jan 2017 had a median price of S$520,000 (25th to 75th percentile S$395,000 to S$613,250) and a median S$5,098 psm (S$3,895 psm to S$6,072 psm). Latest recorded sale Jan 2026. Indicative, from recorded HDB resale prices.
Latest sale
S$660,000 · 101 sqm · S$6,535 psm · Jan 2026 · storeys 4 to 6
The latest sale, in Jan 2026, had 70 years 6 months of lease remaining, as HDB recorded it.
By year
| Year | Sales | Median price | 25th to 75th percentile | Median psm |
|---|---|---|---|---|
| 2017 | 1 | S$375,000 | one sale | S$3,713 psm |
| 2018 | 2 | S$390,500 | S$384,250 – S$396,750 | S$3,828 psm |
| 2019 | 1 | S$400,000 | one sale | S$3,960 psm |
| 2020 | 1 | S$380,000 | one sale | S$3,725 psm |
| 2022 | 1 | S$520,000 | one sale | S$5,098 psm |
| 2023 | 1 | S$520,000 | one sale | S$5,098 psm |
| 2024 | 1 | S$600,000 | one sale | S$5,941 psm |
| 2025 | 3 | S$623,000 | S$616,500 – S$634,944 | S$6,168 psm |
| 2026 | 1 | S$660,000 | one sale | S$6,535 psm |
Which storeys sold?
| Storeys | Sales |
|---|---|
| Storeys 1 to 3 | 4 |
| Storeys 4 to 6 | 7 |
| Storeys 7 to 9 | 1 |
How this is worked out
Every figure is HDB resales of this flat type in this block with a contract date since Jan 2017, leaving out sales flagged at ingest as unrepresentative (such as related-party transfers and statistical outliers). A page is published only with at least 5 such sales. Storeys are the ranges HDB records, not exact floors.