Block 423 Clementi Ave 1
423 Clementi Ave 1, Singapore 120423
Block 423 Clementi Ave 1 is an HDB block in Clementi, completed in 2011, with 204 dwelling units. 2-Room flats have recently resold around S$575k (70 sqm), from 51 resales on record. The lease has approximately 87 years remaining.
What are the key facts about Block 423 Clementi Ave 1?
Block 423 Clementi Ave 1 is an HDB block in Clementi, completed in 2011, with 204 dwelling units.
- Town
- Clementi
- Planning area
- Clementi
- Completed
- 2011
- Storeys
- 28
- Total units
- 204
- Market segment
- RCR
- Median resale
- S$575k
- Last transacted
- Mar 2026
- Remaining lease
- ≈ 87 years
What are resale prices at Block 423 Clementi Ave 1?
2-Room flats have recently resold around S$575k (S$816 psf), from 51 resales on record (HDB caveat data).
| Flat type | Resales | Median price | Size | PSF |
|---|---|---|---|---|
| 2-Room | 20 | S$391,888recent | 49 sqm | S$728 psf |
| 3-Room | 14 | S$538,000recent | 70 sqm | S$694 psf |
| 4-Room | 17 | S$748,000recent | 100 sqm | S$695 psf |
“Recent” medians use the latest transactions; for older blocks the all-time median spans 30+ years and understates today’s price. Source: HDB resale caveats, through Mar 2026.
What has recently sold at Block 423 Clementi Ave 1?
Block 423 Clementi Ave 1 has 51 recorded resales; the most recent transacted at S$458,000 in Mar 2026 (HDB caveat data).
| Date | Flat type | Storey | Size | Price |
|---|---|---|---|---|
| Mar 2026 | 2-Room | 04 TO 06 | 49 sqm | S$458,000 |
| Jul 2025 | 2-Room | 07 TO 09 | 49 sqm | S$423,000 |
| Jul 2025 | 2-Room | 25 TO 27 | 49 sqm | S$475,000 |
| Feb 2025 | 4-Room | 16 TO 18 | 100 sqm | S$979,000 |
| Jan 2025 | 4-Room | 10 TO 12 | 99 sqm | S$931,888 |
| Sept 2024 | 3-Room | 07 TO 09 | 70 sqm | S$680,000 |
| Jul 2024 | 2-Room | 25 TO 27 | 49 sqm | S$422,000 |
| Jun 2024 | 2-Room | 22 TO 24 | 49 sqm | S$475,000 |
| Dec 2023 | 3-Room | 04 TO 06 | 70 sqm | S$575,000 |
| Nov 2023 | 3-Room | 13 TO 15 | 70 sqm | S$615,000 |
| Jan 2023 | 4-Room | 07 TO 09 | 100 sqm | S$805,000 |
| Jan 2023 | 4-Room | 04 TO 06 | 99 sqm | S$825,000 |
What flat types are in Block 423 Clementi Ave 1?
Block 423 Clementi Ave 1 has 204 units, mostly 2-Room flats.
Unit stock by flat type, from the HDB property information dataset.
How far is Block 423 Clementi Ave 1 from MRT and schools?
The nearest MRT/LRT to Block 423 Clementi Ave 1 is Clementi MRT, about 820 m away (~13 min walk). 6 schools are within 1 km, including 2 primary schools.
Getting around
- Clementi MRT820 m · ~13 min
- Dover MRT993 m · ~16 min
Schools nearby
Flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
- Nan Hua High SchoolSecondary schoolwithin 1 km214 m
- New Town Secondary SchoolSecondary schoolwithin 1 km365 m
- Nus High School Of Mathematics And ScienceMixed-level schoolwithin 1 km384 m
- School Of Science And Technology, SingaporeSecondary schoolwithin 1 km597 m
- Pei Tong Primary SchoolPrimary schoolwithin 1 km · P1 priority793 m
- Clementi Primary SchoolPrimary schoolwithin 1 km · P1 priority978 m
- Kent Ridge Secondary SchoolSecondary school1.1 km
- Clementi Town Secondary SchoolSecondary school1.1 km
Shops, food & parks
Straight-line distances from the block. Source: PropKaki amenities data.
What does it cost to buy a flat at Block 423 Clementi Ave 1?
Buying a flat at Block 423 Clementi Ave 1 (~S$575k) needs about S$4,584/mo in income and S$2,159/mo in repayments, after S$11,850 stamp duty and a S$144k downpayment.
Illustrative, for a buyer at the recent median resale price (S$575k) — 25% downpayment (bank-loan basis), 25-year loan at 3.5% p.a. Rates as of May 2026. Run it for your own profile →
Buyer's Stamp Duty
S$11,850
BSD, tiered
Downpayment (25%)
S$144k
cash + CPF
Monthly instalment
S$2,159/mo
25y @ 3.5%
Income required
S$4,584/mo
MSR/TDSR @ stress rate
First-time HDB buyers pay no Additional Buyer’s Stamp Duty (ABSD) and may qualify for CPF Housing Grants of up to S$80,000+, which lower the cash required — these are not included above. An HDB concessionary loan also allows a smaller downpayment.
Frequently asked questions about Block 423 Clementi Ave 1
What is the resale price at Block 423 Clementi Ave 1?⌄
2-Room flats at Block 423 Clementi Ave 1 have recently resold around S$575k (70 sqm), based on HDB resale caveats. Resale prices vary by flat type, floor and remaining lease.
How much are flats at Block 423 Clementi Ave 1 by flat type?⌄
2-Room ≈ S$392k; 3-Room ≈ S$538k; 4-Room ≈ S$748k. Figures are median resale prices from HDB caveats.
How many years are left on the lease at Block 423 Clementi Ave 1?⌄
Block 423 Clementi Ave 1 has approximately 87 years left on its 99-year lease (completed 2011). This figure is taken from the most recent transacted flat.
How many units are in Block 423 Clementi Ave 1?⌄
Block 423 Clementi Ave 1 has 204 dwelling units across up to 28 storeys, mostly 2 room flats.
What is the nearest MRT to Block 423 Clementi Ave 1?⌄
The nearest MRT/LRT station to Block 423 Clementi Ave 1 is Clementi MRT, about 820 m away (~13 min walk).
Which primary schools are within 1 km of Block 423 Clementi Ave 1?⌄
Pei Tong Primary School, Clementi Primary School are within 1 km of Block 423 Clementi Ave 1 — flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
Is Block 423 Clementi Ave 1 a good place to buy an HDB resale flat?⌄
Block 423 Clementi Ave 1 sits in Clementi, in the Clementi planning area. Whether it suits you depends on your budget, the flat type, the remaining lease (≈87 years) and proximity to MRT and schools — all of which are summarised on this page from HDB resale data.
