Block 221 Serangoon Avenue 4
Block 221 Serangoon Avenue 4 has 45 recorded HDB resale transactions since 2017. Latest sale: $496,888 (Jan 2026, 3 room, floors 07–09). Median $5,000/sqm. Prices up 41.1% over the past five years. Built 1984, 58 years lease remaining.
How this block compares
- 3 Room$495,944+6.3%vs town(+$29k)+11.4%vs national(+$51k)
Median of resales in the 12 months to Jul 2026, compared with town and Singapore medians on the same basis. Flat types with fewer than two sales in the window are omitted.
What this block rents for, and the gross rental yield (annual rent ÷ resale price). Figures are from rentals at this block where available.
| Flat type | Median rent /mo | Gross yield | Based on |
|---|---|---|---|
| 3-Room | $2,800 typically $2,500–$3,000 | 7.2% | Serangoon avg · block too thin |
| 4-Room | $3,400 typically $3,300–$3,700 | 6.9% | 5 rentals here |
| 5-Room | $3,600 typically $3,400–$3,900 | 5.2% | Serangoon avg · block too thin |
This block is inside the 1 km Primary 1 priority zone for 2 popular schools. When a school is oversubscribed, MOE ballots by home–school distance, and homes within 1 km are drawn first.
- This home
- School within 1 km
- School 1–2 km
- 1km ring, top priority
- 2km ring, next tier
Straight-line distances, the basis MOE uses for Home–School Distance priority. Tap a school to open it. Map © OneMap, SLA.
Other HDB blocks closest to Block 221 Serangoon Avenue 4 in Serangoon, with their median resale price. Useful for comparing what a flat here costs against its immediate neighbours.
| Date | Floor | Type | Area | Price | $/sqm |
|---|---|---|---|---|---|
| Jan 2026 | 07 TO 09 | 3 ROOM | 67 sqm | $496,888 | $7,416 |
| Nov 2025 | 07 TO 09 | 4 ROOM | 92 sqm | $593,888 | $6,455 |
| Aug 2025 | 07 TO 09 | 3 ROOM | 67 sqm | $495,000 | $7,388 |
| Jul 2025 | 04 TO 06 | 3 ROOM | 71 sqm | $495,000 | $6,972 |
| Jun 2025 | 10 TO 12 | 3 ROOM | 67 sqm | $490,000 | $7,313 |
| Jun 2025 | 07 TO 09 | 3 ROOM | 67 sqm | $510,000 | $7,612 |
| Aug 2024 | 01 TO 03 | 3 ROOM | 71 sqm | $408,888 | $5,759 |
| Aug 2024 | 10 TO 12 | 3 ROOM | 67 sqm | $440,000 | $6,567 |
| Jul 2024 | 10 TO 12 | 4 ROOM | 99 sqm | $620,000 | $6,263 |
| Apr 2024 | 04 TO 06 | 3 ROOM | 67 sqm | $400,000 | $5,970 |
| Mar 2024 | 01 TO 03 | 3 ROOM | 67 sqm | $380,000 | $5,672 |
| Oct 2023 | 07 TO 09 | 4 ROOM | 92 sqm | $579,000 | $6,293 |
| Aug 2023 | 07 TO 09 | 3 ROOM | 67 sqm | $392,000 | $5,851 |
| Apr 2023 | 07 TO 09 | 3 ROOM | 67 sqm | $385,000 | $5,746 |
| Dec 2022 | 01 TO 03 | 3 ROOM | 67 sqm | $380,000 | $5,672 |
| Nov 2022 | 07 TO 09 | 4 ROOM | 94 sqm | $590,000 | $6,277 |
| Aug 2022 | 07 TO 09 | 4 ROOM | 94 sqm | $520,888 | $5,541 |
| Jan 2022 | 04 TO 06 | 4 ROOM | 99 sqm | $470,000 | $4,747 |
| Dec 2021 | 07 TO 09 | 3 ROOM | 67 sqm | $355,000 | $5,299 |
| Oct 2021 | 04 TO 06 | 3 ROOM | 67 sqm | $333,000 | $4,970 |
About Block 221 Serangoon Avenue 4
Block 221 Serangoon Avenue 4 in Serangoon dates to 1984 and now has roughly 58 years of lease remaining, which makes lease decay the central consideration for buyers. Its median sits about 21% below the Serangoon median, cheaper than about 82% of the town's blocks. It has a regular flow of resale activity, with 45 transactions since 2017 across 3 room, 4 room, 5 room flats priced from $280,000 to $770,000. The most recent transaction was a 3 room flat on storeys 07 TO 09 at $496,888 in Jan 2026, and the median works out to $5,000/sqm. Higher floors carry a premium, with the 07 TO 09 band trading roughly 22% above the 01 TO 03 band. Over five years, prices here are up about 41.1%. All transaction data is sourced from data.gov.sg and updated monthly.
Frequently Asked Questions
How much is an HDB flat at Block 221 Serangoon Avenue 4 worth?
The most recent resale transaction at Block 221 Serangoon Avenue 4 was $496,888 for a 3 room flat in 2026-01. The median price per square metre across all flat types is $5,000, based on 45 transactions since January 2017. Data sourced from data.gov.sg.
What is the remaining lease for Block 221 Serangoon Avenue 4?
Block 221 Serangoon Avenue 4 was built in 1984 and has approximately 58 years remaining on its 99-year lease. Under Bala's Table (the SLA leasehold valuation model), the annual lease decay rate is 0.55%, meaning the leasehold value decreases by approximately 0.55% per year at the current remaining lease.
What flat types are available at Block 221 Serangoon Avenue 4?
Block 221 Serangoon Avenue 4 in Serangoon contains 3 room, 4 room, 5 room flats. Resale prices range from $280,000 to $770,000 based on historical transaction records from data.gov.sg.
Have HDB prices at Block 221 Serangoon Avenue 4 gone up or down?
Resale prices at Block 221 Serangoon Avenue 4 have increased by approximately 41.1% over the past five years. The current median price is $408,888, with the most recent sale at $496,888 in 2026-01.