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. Across 53 resales on record, 2-Room flats have recently resold around S$575k (S$874 psf, 70 sqm). The lease has approximately 86 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
- Flat model
- Model A
- Market segment
- RCR
- Median resale
- S$575k
- Last transacted
- Jul 2026
- Remaining lease
- ≈ 86 years
What are resale prices at Block 423 Clementi Ave 1?
2-Room flats have recently resold around S$575k (S$874 psf), from 53 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 | 15 | S$538,000recent | 70 sqm | S$710 psf |
| 4-Room | 18 | S$760,000recent | 100 sqm | S$706 psf |
Live now: 0 flats listed for sale at this block and 4 for rent — search all listings.
“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 Jul 2026.
What rent and yield does Block 423 Clementi Ave 1 get?
Flats at Block 423 Clementi Ave 1 have recently sublet for a median of S$3,000/mo, an indicative gross rental yield of about 6.3% (from 24 recent rental contracts).
Median rent
S$3,000/mo
24 recent contracts
Gross rental yield
6.3%
indicative, gross
Annual rent
S$36,000
median × 12 months
| Flat type | Contracts | Median rent |
|---|---|---|
| 2-Room | 19 | S$2,800/mo |
| 4-Room | 7 | S$4,200/mo |
| 3-Room | 8 | S$3,000/mo |
HDB subletting requires the flat owner to have met the 5-year Minimum Occupation Period (MOP), so the rental sample per block is small — treat the yield as indicative. Latest contract Jun 2026. Source: HDB rental (subletting) data.
What has recently sold at Block 423 Clementi Ave 1?
Block 423 Clementi Ave 1 has 53 recorded resales; the most recent transacted at S$962,000 in Jul 2026 (HDB caveat data).
| Date | Flat type | Storey | Size | Price |
|---|---|---|---|---|
| Jul 2026 | 4-Room | 10 TO 12 | 99 sqm | S$962,000 |
| Jul 2026 | 3-Room | 04 TO 06 | 75 sqm | S$710,000 |
| 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 |
What flat types are in Block 423 Clementi Ave 1?
Block 423 Clementi Ave 1 has 204 units, mostly 2-Room flats of the Model A model.
Unit stock by flat type, from the HDB property information dataset.
Where is Block 423 Clementi Ave 1?
Block 423 Clementi Ave 1 is an HDB block in Clementi.
Block 423 Clementi Ave 1 is an HDB block located along Clementi Ave 1. The block is recorded as completed around 2011, with up to 28 storeys. It has an estimated 204 residential units based on the HDB property information dataset. Flat types in the block include 2-room, 3-room, and 4-room units.
The address is Block 423 Clementi Ave 1, Singapore 120423. It is part of District 05, Pasir Panjang / Hong Leong Garden / Clementi New Town, the Clementi planning area. The block falls within the West Region and the RCR market segment.
The nearest rail connection is Clementi MRT, approximately 820m away, around 13 minutes on foot. Nearby amenities include West Coast Plaza for shopping, SHENG SIONG SUPERMARKET PTE LTD for groceries, Blk 353 Clementi Ave 2 for food options, Taman Mas Merah Playground for greenery and recreation, Clementi Polyclinic for polyclinic services, and West Coast Community Centre for community facilities.
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.
Wondering whether it will hold its value? See do HDB flats actually make money? →
Eyeing Block 423 Clementi Ave 1? Ask what it's worth.
Recent transacted prices, what's nearby, and whether an asking price is fair.
PropKakiRecent sales at Block 423 Clementi Ave 1 land close to the town median — fair value, no big premium.
Frequently asked questions about Block 423 Clementi Ave 1
How much does a 2-Room flat at Block 423 Clementi Ave 1 cost?⌄
2-Room flats at Block 423 Clementi Ave 1 have recently resold for a median of about S$575k (S$874 psf), from 53 resales on record (HDB caveats). The exact price depends on the flat type, floor and remaining lease.
What are resale prices at Block 423 Clementi Ave 1 by flat type?⌄
2-Room ≈ S$392k; 3-Room ≈ S$538k; 4-Room ≈ S$760k (median resale, HDB caveats).
Is Block 423 Clementi Ave 1 worth buying given its remaining lease?⌄
Block 423 Clementi Ave 1 has about 86 years left on its 99-year lease (completed 2011). That's a long runway, so CPF usage and bank financing are generally unrestricted. The figure is taken from the most recent transacted flat.
What is the rental yield at Block 423 Clementi Ave 1?⌄
Gross rental yield at Block 423 Clementi Ave 1 is about 6.3%, based on a median subletting rent of about S$3,000/mo against a resale price of about S$575k. HDB subletting requires the owner to have met the 5-year MOP, so the per-block sample is small — treat this as indicative.
How much do I need to earn to buy a flat at Block 423 Clementi Ave 1?⌄
For a flat at about S$575k on a 25-year HDB-style loan, you'd need roughly S$4,584/mo in household income, with repayments around S$2,159/mo after a S$144k downpayment. First-timer grants of up to S$80,000+ (not included) lower the cash needed.
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.