How much is a flat at Blk 423 Choa Chu Kang Ave 4 worth?

4 Room: $550,278 median (4 sales in the last 12 months). 5 Room: $630,000 median (1 sale in the last 12 months). Medians are quoted per flat type, because a 3-room and a 5-room at the same block are different markets.

What flat types are available at Blk 423 Choa Chu Kang Ave 4?

Blk 423 Choa Chu Kang Ave 4 has 4 Room, 5 Room flats across 115 units. The lease started in 1992 and has about 65 years left of its 99.

What was the most recent sale at Blk 423 Choa Chu Kang Ave 4?

A 4 Room flat, storeys 10 to 12 sold for $590,000 in Jul 2026.

What is the price per square foot at Blk 423 Choa Chu Kang Ave 4?

4 Room flats have a median of $492 psf, based on 4 sales in the last 12 months.

How often do flats come up for sale at Blk 423 Choa Chu Kang Ave 4?

5 flats changed hands in the last 12 months, about 4.3% of the 115 units in the block. 11 sales are recorded here since Aug 2021.

Blk 423 Choa Chu Kang Ave 4

Choa Chu Kang6804234 ROOM5 ROOMLease balance: 65 yrs (from 1992)

5 sales in the last 12 months · ~4.3% of 115 units

Sales, last 12 months

11 recorded since Aug 2021

Median price

$550K

4 Room · 4 sales · last 12 months

Median PSF

$492

4 Room · 4 sales · last 12 months

Price range

$540K – $590K

4 Room · 4 sales · last 12 months

Latest sale

$590,000

Jul 2026 · 4 Room · #10-12

Can you use CPF for this flat?

65 years left on the 99, from 1992.

The lease covers you to 95. Full CPF use.

Youngest buyer's age35

Price$550K

CPF OA balance$150K

CPF you can use

the lease covers you to 95, so the only limit is your balance

$110,055

Maximum bank loan

75% of the price, over 25 years

$412,709

Cash you need

at least $27,514 of any purchase must be cash

$27,514

Monthly instalment

25 years at 3.5%

$2,066

CPF 20% Loan 75% Cash 5%

Indicative. Excludes stamp duty, legal fees and CPF accrued interest. Confirm with HDB and your banker. Rules as at 2026-09-17.

Market Insights

Supply

3 units

3 agent listings

Asking vs sold

+10.9%

$610K ask · $550K sold

4 Room · 4 sold, 3 asking

Price trend

+6.6%

6 months, 3 sales

12 months: -1.4% (5)

Turnover

4.3%

5 of 115 units, 12 months

What is my flat worth here?

Resale Price Trend

One flat type at a time, so a single larger sale cannot look like a price jump

Median price per month, 4 Room only, 7 sales

Check your valuation today

Recent Resale Transactions

11 recorded · 5 in the last 12 months • Page 1 of 1

Date	Flat Type	Storey	Area	Price	PSF
2026-07	4 ROOM	10 TO 12	1,119 sqft	$590,000	$527
2026-05	4 ROOM	01 TO 03	1,119 sqft	$540,000	$482
2026-04	5 ROOM	01 TO 03	1,313 sqft	$630,000	$480
2026-03	4 ROOM	04 TO 06	1,119 sqft	$540,000	$482
2025-11	4 ROOM	04 TO 06	1,119 sqft	$560,555	$501
2025-07	4 ROOM	10 TO 12	1,119 sqft	$555,000	$496
2025-02	4 ROOM	04 TO 06	1,119 sqft	$550,000	$491
2025-02	5 ROOM	04 TO 06	1,313 sqft	$635,000	$484
2024-07	4 ROOM	10 TO 12	1,119 sqft	$540,000	$482
2023-06	5 ROOM	07 TO 09	1,313 sqft	$591,000	$450
2021-08	5 ROOM	01 TO 03	1,313 sqft	$487,000	$371