Blk 231 Bishan St 23

8 filed resale transactions · Bishan · 64 years 09 months of lease left

Median, per square foot
764 psf
Observed range
S$595 — S$840 psf8 filed transactions · 32% low to highS$1,200k median filed price

Flat type filed here: Executive. Confirm the specific unit’s type from its listing before running Blindspot.

HDB Resale Flat Prices (data.gov.sg) · 2023-10 to 2026-09 · accessed 2026-10-01

What are you here to work out?

I’m thinking of buying it
I own it

Median price by month8 months with a sale

Jan '24 · S$1,200kAug '26 · S$1,200k

The transactions behind those figures

8 of 8 · filed, nothing modelled
146 sqm · storey 01–03EXECUTIVE · Maisonette · 2026-08
S$1,200,000$764 psf
146 sqm · storey 01–03EXECUTIVE · Maisonette · 2026-07
S$1,088,888$693 psf
146 sqm · storey 07–09EXECUTIVE · Maisonette · 2026-05
S$1,240,000$789 psf
146 sqm · storey 01–03EXECUTIVE · Maisonette · 2026-03
S$935,000$595 psf
146 sqm · storey 01–03EXECUTIVE · Maisonette · 2025-09
S$1,105,000$703 psf
146 sqm · storey 13–15EXECUTIVE · Maisonette · 2025-08
S$1,320,000$840 psf
146 sqm · storey 13–15EXECUTIVE · Maisonette · 2024-07
S$1,236,000$786 psf
146 sqm · storey 07–09EXECUTIVE · Maisonette · 2024-01
S$1,200,000$764 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 2026-10-01 from data.gov.sg, made available under the Singapore Open Data Licence v1.0Contains information from URA Data Service — PMI_Resi_Transaction accessed on 2026-10-01, made available under the Singapore Open Data Licence v1.0

Where it sitsThe whole map

© OneMap, SLA · © OpenStreetMap
Median psf · HDB
under $501
$501
$532
$561
$603
$686+

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 BISHAN, not here.

BISHAN, typical block+7.1%

Middle of 3 blocks in BISHAN that clear the bar — half fall between +6.3% and +9.9%. None came out negative in this set.

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

StoreysMedian psfFiled sales
01 TO 03S$669122
04 TO 06S$710160
07 TO 09S$737138
10 TO 12S$73597
13 TO 15S$76426
16 TO 18S$78013

HDB Resale Flat Prices (data.gov.sg) · accessed 2026-10-01 · 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
Bishan
745m
Primary schools within 1km
2
nearest 325m
Primary schools · straight-line distance
6 more between 1km and 2km
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
  • Bishan745m
  • Marymount1.2km
  • Upper Thomson1.4km
Also nearby
  • Hawker centreAng Mo Kio Ave 1 Blk 341 (Teck Ghee Court)803m
  • ParkJalan Sembilang Park1.3km
  • Preschools6 within 1kmnearest 0m
  • Other schoolsWhitley Secondary School443m

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

34blocks within 300m
$714–$874the middle half, per sq ft
$772median of those sales

From 211 filed sales, at most the 20 most recent per block — 2 have sold more than is counted here.

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

BlockAwayFiledStoreySizePSF
Blk 235 Bishan St 22146m2026-0907–09105 sqm$779
Blk 233 Bishan St 22146m2026-0907–09112 sqm$730
Blk 290 Bishan St 24166m2026-0904–06100 sqm$893
Blk 227 Bishan St 23168m2026-0907–09105 sqm$759
Blk 291 Bishan St 24172m2026-0922–24121 sqm$975
Blk 273A Bishan St 24236m2026-0931–33120 sqm$1,239
Blk 293 Bishan St 22113m2026-0822–24102 sqm$829
Blk 292 Bishan St 22143m2026-0810–12102 sqm$774
Blk 235 Bishan St 22146m2026-0804–06113 sqm$707
Blk 290 Bishan St 24166m2026-0825–27123 sqm$852
Blk 236 Bishan St 22230m2026-0801–03119 sqm$652
Blk 273A Bishan St 24236m2026-0834–3695 sqm$1,271
Blk 290 Bishan St 24166m2026-0707–09123 sqm$831
Blk 229 Bishan St 2338m2026-0604–06102 sqm$720
Blk 235 Bishan St 22146m2026-0604–06105 sqm$743

The 15 most recent of 211 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$1,200,000
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$1,200,000

Your figures · CPF interest estimated
Sale priceS$1,200,000
Redeems the loan−S$180,000
Agent fee (2% + GST) and legal−S$28,960
Refund to your CPFprincipal plus estimated accrued interest−S$202,416
Cash to youS$788,624
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

  1. Your actual floor, facing and renovationPublic data gives a storey band, never your unit.
  2. Whether you sell or buy firstChanges your ABSD, timeline and bridging cost — often by five figures.
  3. 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.

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

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.

Look up somewhere else

Any HDB block or private project in Singapore.