Block 421 Clementi Avenue 1
Block 421 Clementi Avenue 1 has 105 recorded HDB resale transactions since 2017. Latest sale: $650,000 (May 2026, 3 room, floors 19–21). Median $8,030/sqm. Prices up 26.1% over the past five years. Built 2013, 86 years lease remaining.
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 | $3,000 typically $2,800–$3,200 | 8.4% | Clementi avg · block too thin |
| 4-Room | $4,350 typically $4,050–$4,600 | 5.3% | 6 rentals here |
No popular school is within 1 km, but 3sit in the 1–2 km second-priority band.
Compare homes near all 50 popular schools| Date | Floor | Type | Area | Price | $/sqm |
|---|---|---|---|---|---|
| May 2026 | 19 TO 21 | 3 ROOM | 73 sqm | $650,000 | $8,904 |
| Apr 2026 | 25 TO 27 | 4 ROOM | 100 sqm | $975,888 | $9,759 |
| Mar 2026 | 19 TO 21 | 4 ROOM | 96 sqm | $985,000 | $10,260 |
| Jan 2026 | 31 TO 33 | 4 ROOM | 96 sqm | $1,038,000 | $10,813 |
| Nov 2025 | 10 TO 12 | 4 ROOM | 100 sqm | $965,000 | $9,650 |
| Nov 2025 | 22 TO 24 | 4 ROOM | 91 sqm | $978,000 | $10,747 |
| Aug 2025 | 10 TO 12 | 4 ROOM | 91 sqm | $942,888 | $10,361 |
| Aug 2025 | 22 TO 24 | 4 ROOM | 100 sqm | $970,000 | $9,700 |
| May 2025 | 25 TO 27 | 4 ROOM | 92 sqm | $965,000 | $10,489 |
| Apr 2025 | 07 TO 09 | 4 ROOM | 100 sqm | $952,488 | $9,525 |
| Mar 2025 | 13 TO 15 | 3 ROOM | 74 sqm | $728,000 | $9,838 |
| Feb 2025 | 04 TO 06 | 4 ROOM | 91 sqm | $850,000 | $9,341 |
| Feb 2025 | 19 TO 21 | 4 ROOM | 92 sqm | $922,000 | $10,022 |
| Feb 2025 | 04 TO 06 | 4 ROOM | 91 sqm | $855,000 | $9,396 |
| Jan 2025 | 25 TO 27 | 3 ROOM | 73 sqm | $720,000 | $9,863 |
| Nov 2024 | 01 TO 03 | 3 ROOM | 73 sqm | $616,888 | $8,451 |
| Jul 2024 | 16 TO 18 | 4 ROOM | 92 sqm | $915,000 | $9,946 |
| Jun 2024 | 01 TO 03 | 4 ROOM | 92 sqm | $755,000 | $8,207 |
| May 2024 | 04 TO 06 | 3 ROOM | 74 sqm | $600,000 | $8,108 |
| May 2024 | 25 TO 27 | 3 ROOM | 73 sqm | $670,000 | $9,178 |
About Block 421 Clementi Avenue 1
Block 421 at Clementi Avenue 1 is a residential HDB block in Clementi, Singapore, built in 2013 with approximately 86 years remaining on its 99-year lease. The block contains 3 room, 4 room flats, with resale prices ranging from $448,000 to $1,038,000 based on 105 recorded transactions since January 2017. The most recent transaction was a 3 room flat on storeys 19 TO 21 sold for $650,000 in 2026-05. The current median price per square metre is $8,030. Over the past five years, resale prices at this block have increased by approximately 26.1%. Under Bala's Table (the Singapore Land Authority's official leasehold valuation model), the block's leasehold relativity ratio is 0.9488, with an annual lease decay rate of approximately 0.19%. 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 421 Clementi Avenue 1 worth?
The most recent resale transaction at Block 421 Clementi Avenue 1 was $650,000 for a 3 room flat in 2026-05. The median price per square metre across all flat types is $8,030, based on 105 transactions since January 2017. Data sourced from data.gov.sg.
What is the remaining lease for Block 421 Clementi Avenue 1?
Block 421 Clementi Avenue 1 was built in 2013 and has approximately 86 years and 5 months remaining on its 99-year lease. Under Bala's Table (the SLA leasehold valuation model), the annual lease decay rate is 0.19%, meaning the leasehold value decreases by approximately 0.19% per year at the current remaining lease.
What flat types are available at Block 421 Clementi Avenue 1?
Block 421 Clementi Avenue 1 in Clementi contains 3 room, 4 room flats. Resale prices range from $448,000 to $1,038,000 based on historical transaction records from data.gov.sg.
Have HDB prices at Block 421 Clementi Avenue 1 gone up or down?
Resale prices at Block 421 Clementi Avenue 1 have increased by approximately 26.1% over the past five years. The current median price is $720,000, with the most recent sale at $650,000 in 2026-05.