Blk 231 Hougang St 21

15 filed resale transactions · Hougang · 57 years 01 month of lease left

Median, per square foot

649 psf

Observed range

S$511 — S$752 psf15 filed transactions · 37% low to highS$989k median filed price

Flat types filed at this block; choose the one relevant to your unit.

▲ 24.2% vs 12 months ago

HDB Resale Flat Prices (data.gov.sg) · 2023-09 to 2026-09 · accessed 2026-09-30

What are you here to work out?

I’m thinking of buying it

I own it

Median price by month13 months with a sale

Oct '23 · S$620kSep '26 · S$989k

The transactions behind those figures

15 of 15 · filed, nothing modelled

140 sqm · storey 04–065 ROOM · Model A-Maisonette · 2026-09

S$988,888$656 psf

140 sqm · storey 07–095 ROOM · Model A-Maisonette · 2026-08

S$1,040,000$690 psf

142 sqm · storey 04–065 ROOM · Model A-Maisonette · 2026-01

S$980,000$641 psf

142 sqm · storey 10–125 ROOM · Model A-Maisonette · 2025-09

S$1,028,000$673 psf

140 sqm · storey 01–035 ROOM · Model A-Maisonette · 2025-05

S$990,000$657 psf

140 sqm · storey 07–095 ROOM · Model A-Maisonette · 2025-02

S$1,070,888$711 psf

142 sqm · storey 10–125 ROOM · Model A-Maisonette · 2024-08

S$1,150,000$752 psf

142 sqm · storey 10–125 ROOM · Model A-Maisonette · 2024-06

S$1,088,000$712 psf

Why a range, not one number. No record shows your floor, facing, renovation or lease, and where your unit sits inside this spread depends on them.

Dataset licences and attribution

Contains information from HDB Resale Flat Prices (data.gov.sg) accessed on 2026-09-30 from data.gov.sg, made available under the Singapore Open Data Licence v1.0Contains information from URA Data Service — PMI_Resi_Transaction accessed on 2026-09-30, made available under the Singapore Open Data Licence v1.0

Where it sitsThe whole map

Median psf · HDB

under $500

$500

$531

$560

$602

$684+

Streets and names: OneMap — Basemap © OneMap, Singapore Land Authority. Buildings: HDB’s own outlines and floor counts, and OpenStreetMap’s, drawn true to scale. Shadows are cast from every building of published height for the time shown; trees and awnings are in no dataset. Two fingers move the map on a phone.

Sun and shadow here — any hour, any month

Deeper checks

What changes from one home to the next.

Floor, surroundings, nearby sales, afternoon sun and the history of the land—shown only where the public record carries enough to say something.

What the floor is worth

This block—

Too few filed sales at both ends of this block — it needs 3 high and 3 low. The figure beside is HOUGANG, not here.

HOUGANG, typical block+8.9%

Middle of 30 blocks in HOUGANG that clear the bar — half fall between +5.5% and +12%. 2 came out negative — high floors sold for less in 2 of them.

Every band in HOUGANG, for reference. Pooled across buildings, so it mixes the age of an estate with height; the two figures above hold a building constant.

Storeys	Median psf	Filed sales
01 TO 03	S$534	371
04 TO 06	S$556	480
07 TO 09	S$586	411
10 TO 12	S$599	376
13 TO 15	S$639	243
16 TO 18	S$684	99

HDB Resale Flat Prices (data.gov.sg) · accessed 2026-09-30 · storey bands as published · a median of filed sales, not a valuation of any home

What's around

Straight-line distance from the building — the walk is longer, and how much longer depends on what is in the way.

Nearest station

Kovan

344m

Primary schools within 1km

nearest 287m

Primary schools · straight-line distance

Xinghua Primary SchoolEvery citizen got a place 2C 2025287m

4 more between 1km and 2km

Paya Lebar Methodist Girls' School (Primary)1.0km
Holy Innocents' Primary School1.2km
Xinmin Primary School1.6km
Montfort Junior School1.8km

The 1km band gives ballot priority, not a school place. These distances are an indication. Check your address's official category with OneMap's SchoolQuery.

How this distance differs from MOE's

MOE measures in a straight line to the school's land boundary from the address on your child's registration. This site measures from the block to the school's single registered coordinate. A large campus can therefore read as further away here, and a school near the line can fall on either side when MOE measures it. An oversubscribed school still ballots within a band.

Stations

Kovan344m
Hougang1.4km
Serangoon1.8km

Also nearby

Hawker centreHougang Street 21 Blk 209 (Kovan Hougang Market and Food Centre)231m
ParkSurin Ave Neighbourhood PK510m
Preschools6 within 1kmnearest 188m
Other schoolsYuying Secondary School278m

Coordinates from OneMap, © Singapore Land Authority. Distances are straight-line.
Station exit locations — LTA (data.gov.sg), under the Singapore Open Data Licence. Accessed 2026-08-23.
School addresses — MOE School Directory and Information (data.gov.sg), under the Singapore Open Data Licence. Accessed 2026-08-23.
Hawker centre locations — NEA (data.gov.sg), under the Singapore Open Data Licence. Accessed 2026-08-23.
Park locations — NParks (data.gov.sg), under the Singapore Open Data Licence. Accessed 2026-08-23.
Preschool locations — ECDA (data.gov.sg), under the Singapore Open Data Licence. Accessed 2026-08-23.

What has sold nearby300m

Distance from Blk 231 Hougang St 21Straight-line, not walking.

10blocks within 300m

$555–$654the middle half, per sq ft

$606median of those sales

From 57 filed sales, at most the 20 most recent per block.

Scroll sideways to see the date, storey, size and psf →

Block	Away	Filed	Storey	Size	PSF
Blk 232 Hougang Ave 1	83m	2026-09	10–12	104 sqm	$616
Blk 236 Hougang Ave 1	121m	2026-09	04–06	104 sqm	$572
Blk 237 Hougang St 21	199m	2026-09	13–15	156 sqm	$596
Blk 230 Hougang Ave 1	99m	2026-08	07–09	142 sqm	$680
Blk 232 Hougang Ave 1	83m	2026-07	10–12	104 sqm	$599
Blk 232 Hougang Ave 1	83m	2026-07	07–09	104 sqm	$603
Blk 232 Hougang Ave 1	83m	2026-07	04–06	104 sqm	$554
Blk 238 Hougang Ave 1	162m	2026-07	10–12	136 sqm	$666
Blk 236 Hougang Ave 1	121m	2026-06	07–09	104 sqm	$565
Blk 238 Hougang Ave 1	162m	2026-05	07–09	110 sqm	$657
Blk 234 Hougang Ave 1	99m	2026-04	01–03	103 sqm	$558
Blk 235 Hougang St 21	132m	2026-04	01–03	155 sqm	$650

The 12 most recent of 57 at this radius. Storey bands as published; no feed carries a unit number.

Where the money actually goes

Drag the sale price. Everything moves.

Cash

Loan

CPF refund from proceeds

Fees

Sale price · S$989,000

Outstanding loan

CPF principal used

CPF accrued interest, if known

Use the “What happens if” figure in your CPF Home ownership dashboard. Leave blank to estimate it.

Years since CPF was first used

Used only for the estimate when accrued interest is blank.

Agent fee %

A sale at S$989,000

Your figures · CPF interest estimated

Sale price	S$989,000
Redeems the loan	−S$180,000
Agent fee (2% + GST) and legal	−S$24,360
Refund to your CPFprincipal plus estimated accrued interest	−S$202,416
Cash to you	S$582,224

S$202,416 returns to your CPF, not your pocket — still yours, and it can fund the next purchase. The accrued interest alone is S$52,416. CPF Board’s market-value rule · CPF OA interest 2.5% p.a.

Three things this can't know

Your actual floor, facing and renovationPublic data gives a storey band, never your unit.
Whether you sell or buy firstChanges your ABSD, timeline and bridging cost — often by five figures.
Your real CPF accrued interestThe figure here is an estimate. Yours is in your CPF statement right now.

Tell me those and I'll run your actual numbers — no charge, no obligation.

Name

Your floor or stack

Optional — but it's the single biggest thing the public data can't see.

What are you weighing up?

Rough timing

Staying in touch — optional

Email me the full report and monthly updates on my block

Leave it unticked and the form still sends — you get the reply to what you asked, at the address you gave, and nothing after it. This form asks for no phone number and stores none.

Leaving it unticked is fine — the tools work either way, and I'll still reply to this enquiry. I don't sell or share your details.

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