Property market
The five-year median is £470,000 from 3 recorded sales in CF23 5BY. This is a recorded-sale statistic, not a current valuation.
The latest UK House Price Index average for Cardiff is £270,094 in June 2026, up 2.1% year on year.
CF23 5BY
Penylan · Cardiff · Wales
Updated September 2026
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Nearby postcodes
Complete postcode fields and official codes
- Postcode
- CF23 5BY
- Status
- Current
- Introduced
- 1 June 1999
- Terminated
- Not published
- Postcode area
- CF
- Postcode district
- CF23
- Postcode sector
- CF23 5
- Latitude
- 51.493988
- Longitude
- -3.159751
- British National Grid easting
- 319,584
- British National Grid northing
- 177,865
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Cardiff · W06000015
- Electoral ward
- Penylan · W05001288
- Parish or community
- W04000860
- Westminster constituency
- Cardiff East · W07000089
- Output area
- W00009403
- Lower layer super output area
- Cardiff 029C · W01001824
- Middle layer super output area
- Cardiff 029 · W02000395
Postcode source versions
- Ordnance Survey: Code-Point Open Version 2026-08 · Current postcode units in Great Britain · OGL-3.0
- Office for National Statistics: ONS Postcode Directory Version 2026-08 · United Kingdom; Northern Ireland excluded pending rights review; Crown Dependencies outside product scope · OGL-3.0 with third-party rights
- Ordnance Survey: Boundary-Line Version 2026-05 · Local-authority boundaries in Great Britain · OS OpenData Licence
Explore CF23
Property
49 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| 124, Marlborough Road, Cardiff, CF23 5BY | 7 January 2026 | £555,000 |
| 68, Marlborough Road, Cardiff, CF23 5BY | 15 August 2022 | £470,000 |
| 88, Flat 1, Marlborough Road, Cardiff, CF23 5BY | 6 April 2022 | £215,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 81
- Primary
- 0
- Secondary
- 0
- 542 m
Stacey Primary School
Welsh establishment
- 582 m
Albany Primary School
Welsh establishment
- 582 m
Ysgol Y Berllan Deg
Welsh establishment
Recorded crime
Within 1 mile of this postcode
- Published events
- 8,274
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 2,497
- Shoplifting 1,036
- Public order 874
- Vehicle crime 797
- Anti social behaviour 642
Census 2021
Population and age profile
- Postcode residents
- 117
- Postcode households
- 47
- Residents per household
- 2.5
- CF23 5 residents
- 9,959
53 female, 64 male
Age bands in CF23 5
Wider postcode sector- Age 0 to 14
- 16.3%
- Age 15 to 24
- 15.8%
- Age 25 to 44
- 25.5%
- Age 45 to 64
- 24.4%
- Age 65 and over
- 18%
1,661 residents
1,606 residents
2,589 residents
2,483 residents
1,825 residents
This postcode contained 1.2% of the sector's usual residents on Census Day. The age profile describes the wider CF23 5 sector, not people in this individual postcode.
Small counts are adjusted for privacy, so totals can differ slightly between Census tables.
Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.
Fixed broadband coverage
Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.
- Superfast, 30 Mbit/s+
- 100%
- Ultrafast, 100 Mbit/s+
- 100%
- Ultrafast, 300 Mbit/s+
- 100%
- Gigabit-capable
- 100%
- Unable to receive decent fixed or FWA broadband
- 0%
- Next Generation Access
- 100%
- Decent broadband available from fixed wireless
- 15.6%
Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.
Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.
GP practices
34
within 5 km
THE PENYLAN SURGERY
74 PEN-Y-LAN ROAD, CARDIFF, CF23 5SY
ODS code W97033
417 m
ROATH HOUSE SURGERY
100 PEN-Y-LAN ROAD, PENYLAN, CARDIFF, CF23 5RH
ODS code W97034
479 m
ROATHWELL SURGERY
116 NEWPORT ROAD, CARDIFF, CF24 1YT
ODS code W97002
675 m
CLIFTON SURGERY
151-153 NEWPORT ROAD, ROATH, CARDIFF, CF24 1AG
ODS code W97060
676 m
THE CITY SURGERY
187 CITY ROAD, ROATH, CARDIFF, CF24 3WD
ODS code W97056
842 m
MEDDYGFA ALBANY SURGERY
219 - 221 CITY ROAD, ROATH, CARDIFF, CF24 3JD
ODS code W97014
848 m
CARDIFF HEALTH ACCESS PRACTICE
CARDIFF AND VALE HIS, CARDIFF ROYAL INFIRMARY, CARDIFF, CF24 0SZ
ODS code W00100
1.0 km
CATHAYS SURGERY
137 CATHAYS TERRACE, CARDIFF, CF24 4HU
ODS code W97009
1.6 km
CLOUGHMORE MEDICAL CENTRE
19 SOUTH PARK ROAD, SPLOTT, CARDIFF, CF24 2LU
ODS code W97007
1.7 km
CRWYS MEDICAL CENTRE
THE CRWYS SURGERY, WEDAL ROAD, CARDIFF, CF14 3QX
ODS code W97041
1.9 km
FOUR ELMS MEDICAL CENTRE
STERLING CLOSE, FFORDD PENGAM PENGAM GREE, SPLOTT, CARDIFF, CF24 2HB
ODS code W97048
2.0 km
LLANEDEYRN HEALTH CENTRE
LLAN HEALTHCARE, WELLBEING HUB @ MAELFA, ROUND WOOD, LLANEDEYRN, CARDIFF, CF23 9PF
ODS code W97008
2.3 km
WHITCHURCH ROAD SURGERY
SACHVILLE AVENUE, CARDIFF, CF14 3NY
ODS code W97025
2.5 km
NORTH ROAD MEDICAL PRACTICE
182 NORTH ROAD, CARDIFF, CF14 3XQ
ODS code W97020
2.5 km
BUTETOWN MEDICAL PRACTICE
LOUDOUN, PLAS IONA, CARDIFF, CF10 5HW
ODS code W97291
2.7 km
RUMNEY PRIMARY CARE CENTRE
BARMOUTH ROAD, RUMNEY, CARDIFF, CF3 3LG
ODS code W97027
2.8 km
THE SURGERY
ST DAVIDS COURT, 68A COWBRIDGE ROAD EAST, CARDIFF, CF11 9DN
ODS code W97018
2.8 km
KINGS ROAD (DRS SURGERY)
180 KINGS ROAD, CARDIFF, CF11 9DQ
ODS code W97067
2.9 km
LLANDAFF FIELDS MEDICAL PRACTICE
CANTON COURT, WELLINGTON STREET, CARDIFF, CF11 9SH
ODS code W97005
2.9 km
TAFF RIVERSIDE PRACTICE
WELLINGTON STREET, CARDIFF, CF11 9SH
ODS code W97016
2.9 km
Showing 20 of 34 matching practices.
Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.
Source acquired on 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.
Nearby transport
- 0.0 miles
Roath Court Place
BCT · Roath
- 0.1 miles
Roath Court Place
BCT · Roath
- 0.1 miles
Marlborough Sch
BCT · Roath
- 0.1 miles
Claude Hotel
BCT · Roath
- 0.1 miles
Marlborough Sch
BCT · Roath
Evidence in context
Schools
81 open schools are in scope, including 0 primary and 0 secondary schools. Stacey Primary School is the nearest published school at 542 m.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
8,274 published events cover 12 months, averaging 689.5 events per published month. The largest recorded category is Violence and sexual offences with 2,497 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.