How much is a flat at Blk 639 Choa Chu Kang St 64 worth?

4 Room: $645,000 median (1 sale in the last 12 months). 5 Room: $698,000 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 639 Choa Chu Kang St 64?

Blk 639 Choa Chu Kang St 64 has 4 Room, 5 Room, Executive flats across 87 units. The lease started in 1998 and has about 71 years left of its 99.

What was the most recent sale at Blk 639 Choa Chu Kang St 64?

A 5 Room flat, storeys 04 to 06 sold for $698,000 in Sep 2026.

What is the price per square foot at Blk 639 Choa Chu Kang St 64?

4 Room flats have a median of $599 psf, based on 1 sale in the last 12 months.

How often do flats come up for sale at Blk 639 Choa Chu Kang St 64?

2 flats changed hands in the last 12 months, about 2.3% of the 87 units in the block. 5 sales are recorded here since Apr 2022.

Blk 639 Choa Chu Kang St 64

Choa Chu Kang6806394 ROOM5 ROOMEXECUTIVELease balance: 71 yrs (from 1998)

2 sales in the last 12 months · ~2.3% of 87 units

Sales, last 12 months

5 recorded since Apr 2022

Median price

$645K

4 Room · 1 sale · last 12 months

Median PSF

$599

4 Room · 1 sale · last 12 months

Price range

$645K – $645K

4 Room · 1 sale · last 12 months

Latest sale

$698,000

Sep 2026 · 5 Room · #04-06

Can you use CPF for this flat?

71 years left on the 99, from 1998.

The lease covers you to 95. Full CPF use.

Youngest buyer's age35

Price$645K

CPF OA balance$150K

CPF you can use

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

$129,000

Maximum bank loan

75% of the price, over 25 years

$483,750

Cash you need

at least $32,250 of any purchase must be cash

$32,250

Monthly instalment

25 years at 3.5%

$2,422

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

2 units

3 agent listings

Asking vs sold

+4.3%

$673K ask · $645K sold

4 Room · 1 sold, 2 asking

Price trend

6 months, 2 sales

12 months: -2.7% (2)

Turnover

2.3%

2 of 87 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, 4 sales

Check your valuation today

Recent Resale Transactions

5 recorded · 2 in the last 12 months • Page 1 of 1

Date	Flat Type	Storey	Area	Price	PSF
2026-09	5 ROOM	04 TO 06	1,324 sqft	$698,000	$527
2026-05	4 ROOM	07 TO 09	1,076 sqft	$645,000	$599
2025-08	4 ROOM	10 TO 12	1,076 sqft	$690,000	$641
2024-01	4 ROOM	04 TO 06	1,076 sqft	$550,000	$511
2022-04	4 ROOM	07 TO 09	1,076 sqft	$550,000	$511