HDB › Clementi › Blk 421 Clementi Ave 1

Blk 421 Clementi Ave 1

Clementi · Completed 2012 · 99-year lease · 40 storeys

Block ratingBAbove average on the evidence — within HDB

Updated 03-08-2026. A–E grades the block on the evidence; the 0–100 rating on a price for one flat is a separate number. HDB flats are rated on their own scale, against other HDB resales — an HDB band is never compared with a condo’s.

Rate a price at Blk 421 Clementi Ave 1.

Two ways in — both give the same 0–100 rating on the price, from the same evidence.

Free account: the sizes and the rating open as soon as you sign in — no credit card.

Is this price fair?

See the verdict

Not a valuation — a reading of your price against the property dynamics. HDB issues its official valuation only after an Option to Purchase is granted — this check is for before that moment.

What the record shows

Observed facts from official records — HDB resale transactions (Singapore Open Data Licence), HDB property information and routed distances. No account needed.

Remaining lease86 years · to 2111

Full CPF useBuyers aged 21+ (lease covers to age 95)

Flats in block3-room ×76 · 4-room ×224

Flat modelsModel A

Storeys40

Completed2012

Resales lodged · 24 mo17

3-room median · 12 moS$650,000 · 1 resale

4-room median · 12 moS$972,944 · 8 resales

Nearest MRT/LRTClementi · 0.8 km

Next-nearest MRT/LRTDover (1.2 km)

Nearest bus stopOpp Blk 420A (Clementi Ave 1) (83 m) · 10 within 400 m

Primary schools within 1 km2 · Clementi Primary School, Pei Tong Primary School

Nearest hawker centreClementi Ave 3 Blk 448 · 630 m · 3 within 1 km

Next-nearest hawker centreClementi Ave 2 Blk 353 (Clementi Ave 2 Market/Cooked Food Centre) (647 m)

Nearest parkTaman Mas Merah Playground · 406 m · 3 within 1 km

Next-nearest parkJalan Mas Kuning Playground (555 m)

Nearest supermarketSheng Siong Supermarket (420A Clementi Avenue 1) · 70 m · 8 within 1 km

Nearest wet marketBlk 448 Clementi Ave 3 · 634 m

Nearest shopping mall321 Clementi · 495 m · 4 within 1 km

ParkingSurface car park

Median rent · 4 RoomS$4,200/month · S$4.05 psf · 5 approved

Recent resale transactions

As published by HDB, monthly. Storey is a range and the floor area is the actual registered area — the record a price is rated against.

Month	Flat type	Model	Storey	Floor area	Lease left	Price	S$ psf
Jun 2026	4-room	Model A	22 TO 24	96 sqm · 1,033 sqft	86 yrs	S$970,000	939
May 2026	3-room	Model A	19 TO 21	73 sqm · 786 sqft	86 yrs	S$650,000	827
Apr 2026	4-room	Model A	25 TO 27	100 sqm · 1,076 sqft	86 yrs	S$975,888	907
Mar 2026	4-room	Model A	19 TO 21	96 sqm · 1,033 sqft	86 yrs	S$985,000	954
Jan 2026	4-room	Model A	31 TO 33	96 sqm · 1,033 sqft	86 yrs	S$1,038,000	1005
Nov 2025	4-room	Model A	10 TO 12	100 sqm · 1,076 sqft	86 yrs	S$965,000	897
Nov 2025	4-room	Model A	22 TO 24	91 sqm · 980 sqft	86 yrs	S$978,000	998
Aug 2025	4-room	Model A	10 TO 12	91 sqm · 980 sqft	87 yrs	S$942,888	962
Aug 2025	4-room	Model A	22 TO 24	100 sqm · 1,076 sqft	87 yrs	S$970,000	901
May 2025	4-room	Model A	25 TO 27	92 sqm · 990 sqft	87 yrs	S$965,000	975

Contains information from HDB resale transaction data accessed via data.gov.sg, made available under the Singapore Open Data Licence.

Blk 421 Clementi Ave 1 at a glance

The same observed facts as the table above, drawn. Nothing here is modelled — every figure is a measurement, a count or a date from the public record.

Location map of Blk 421 Clementi Ave 1, a HDB resale block in Clementi, Singapore — Where it is.

Map of the area around Blk 421 Clementi Ave 1 in Clementi, showing 400 m and 1 km rings and 2 primary schools within 1 km — **Inner ring, 400 m:** 10 bus stops. **Outer ring, 1 km:** 2 primary schools · 3 hawker centres · 8 supermarkets · 3 parks.

About Blk 421 Clementi Ave 1

Blk 421 Clementi Ave 1 is a 40-storey HDB block in Clementi, completed in 2012, with about 86 years remaining on its 99-year lease. The nearest MRT/LRT station is Clementi, about 0.8 km away, with Dover the next station out (1.2 km), and 10 bus stops lie within 400 m. 2 primary schools sit within 1 km (Clementi Primary School, Pei Tong Primary School), and the nearest hawker centre is Clementi Ave 3 Blk 448. Taman Mas Merah Playground is the nearest park, about 406 m away, and residents park at a surface car park. The nearest supermarket is sheng siong supermarket (420a clementi avenue 1), about 70 m away, one of 8 within 1 km; the nearest wet market is blk 448 clementi ave 3 (634 m); the nearest shopping mall is 321 clementi (495 m). Over the last 12 months, the 3-room median here was S$650,000 across 1 resale. Over the past 24 months, 17 resales in this block have been published by HDB. Every figure carries the date of the evidence behind it; this page was last updated 03-08-2026.

Frequently asked

How much does a 3-room flat at Blk 421 Clementi Ave 1 cost?

Over the last 12 months, 1 3-room resale was recorded here at a median of S$650,000. Whether a specific asking price is fair depends on the flat — its size, storey and remaining lease.

What is the remaining lease at Blk 421 Clementi Ave 1?

About 86 years, to 2111, as of 03-08-2026. HDB flats are on a 99-year lease.

Can I use full CPF for a flat in this block?

The remaining lease covers a buyer aged 21 or older to age 95, the threshold for unrestricted CPF use under current rules; younger buyers face pro-rated limits. This is a statement of the published rule, not financial advice.

Which MRT station is nearest to Blk 421 Clementi Ave 1?

Clementi, about 0.8 km away. The next-nearest is Dover, about 1.2 km away.

Which primary schools are near Blk 421 Clementi Ave 1?

Within 1 km: Clementi Primary School, Pei Tong Primary School. Proximity to a school within 1 km is a registration priority under MOE's P1 rules.

Where do you shop near Blk 421 Clementi Ave 1?

Sheng Siong Supermarket (420A Clementi Avenue 1), about 70 m away, one of 8 within 1 km. The nearest wet market is Blk 448 Clementi Ave 3, about 634 m away. The nearest shopping mall is 321 Clementi, about 495 m away.

Does Blk 421 Clementi Ave 1 have a PriceVero rating?

Yes — a block rating of B on an A–E scale, measured within HDB resales only and never compared with a condominium. The 0–100 rating for a specific flat depends on its price, which only exists when you name it.

What about Cash Over Valuation (COV) at Blk 421 Clementi Ave 1?

COV is the amount a buyer pays above HDB's official valuation — and that valuation is only issued after an Option to Purchase is granted, so nobody can know COV in advance. PriceVero does not predict valuations or COV. It rates a price against this block's lodged resales, which is the evidence available before the OTP.