4-Room resale prices at Blk 421 Choa Chu Kang Ave 4
Resales from Jan 2017 to Aug 2026 · single-unit sales only
What do 4-room flats at Blk 421 Choa Chu Kang Ave 4 sell for?
Median price since Jan 201725th to 75th percentile · S$4,812 psm median (S$3,471 psm – S$5,099 psm) · from 14 recorded sales
14 recorded resales of 4-room flats at Blk 421 Choa Chu Kang Ave 4 since Jan 2017 had a median price of S$500,444 (25th to 75th percentile S$361,000 to S$530,250) and a median S$4,812 psm (S$3,471 psm to S$5,099 psm). Latest recorded sale Aug 2026. Indicative, from recorded HDB resale prices.
Latest sale
S$555,000 · 104 sqm · S$5,337 psm · Aug 2026 · storeys 10 to 12
The latest sale, in Aug 2026, had 64 years 11 months of lease remaining, as HDB recorded it.
By year
| Year | Sales | Median price | 25th to 75th percentile | Median psm |
|---|---|---|---|---|
| 2018 | 1 | S$325,000 | one sale | S$3,125 psm |
| 2019 | 3 | S$360,000 | S$337,500 – S$362,000 | S$3,462 psm |
| 2020 | 1 | S$300,000 | one sale | S$2,885 psm |
| 2021 | 1 | S$435,000 | one sale | S$4,183 psm |
| 2023 | 2 | S$503,000 | S$499,500 – S$506,500 | S$4,837 psm |
| 2024 | 3 | S$525,000 | S$514,944 – S$528,500 | S$5,048 psm |
| 2025 | 1 | S$574,888 | one sale | S$5,528 psm |
| 2026 | 2 | S$550,000 | S$547,500 – S$552,500 | S$5,288 psm |
Which storeys sold?
| Storeys | Sales |
|---|---|
| Storeys 1 to 3 | 3 |
| Storeys 4 to 6 | 1 |
| Storeys 7 to 9 | 3 |
| Storeys 10 to 12 | 7 |
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.