Property market
The five-year median is £410,000 from 1 recorded sale in CF23 8NY. 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 8NY
Pontprennau and Old St Mellons · Cardiff · Wales
Updated September 2026
Compare this postcodeLocation overview
Drag to pan. Use + or - to zoom. Open larger map
- Post town
- Cardiff
- Local authority
- Cardiff
- Constituency
- Cardiff North
- Postcode district
- CF23
- Postcode sector
- CF23 8
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- CF23 8NY
- Status
- Current
- Introduced
- 1 June 1999
- Terminated
- Not published
- Postcode area
- CF
- Postcode district
- CF23
- Postcode sector
- CF23 8
- Latitude
- 51.531892
- Longitude
- -3.131766
- British National Grid easting
- 321,592
- British National Grid northing
- 182,050
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Cardiff · W06000015
- Electoral ward
- Pontprennau and Old St Mellons · W05001290
- Parish or community
- W04000868
- Westminster constituency
- Cardiff North · W07000090
- Output area
- W00010174
- Lower layer super output area
- Cardiff 003G · W01002018
- Middle layer super output area
- Cardiff 003 · W02000369
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
14 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| 6, Harefield Close, Pontprennau, Cardiff, CF23 8NY | 30 June 2023 | £410,000 |
| 6, Harefield Close, Pontprennau, Cardiff, CF23 8NY | 18 November 2011 | £240,000 |
| 1, Harefield Close, Pontprennau, Cardiff, CF23 8NY | 3 September 2010 | £258,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 45
- Primary
- 0
- Secondary
- 0
- 676 m
Glan-Yr-Afon Primary
Welsh establishment
- 693 m
St Cadoc's Primary School
Welsh establishment
- 800 m
St Mellons C.I.W. Primary School
Welsh establishment
Recorded crime
Within 1 mile of this postcode
- Published events
- 1,910
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 726
- Public order 243
- Shoplifting 217
- Anti social behaviour 184
- Criminal damage and arson 171
Census 2021
Population and age profile
- Postcode residents
- 16
- Postcode households
- 6
- Residents per household
- 2.7
- CF23 8 residents
- 7,049
9 female, 7 male
Age bands in CF23 8
Wider postcode sector- Age 0 to 14
- 19.3%
- Age 15 to 24
- 10.7%
- Age 25 to 44
- 30.3%
- Age 45 to 64
- 28.5%
- Age 65 and over
- 11.1%
1,377 residents
765 residents
2,164 residents
2,034 residents
795 residents
This postcode contained 0.2% of the sector's usual residents on Census Day. The age profile describes the wider CF23 8 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
- 66.7%
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
13
within 5 km
ST. DAVIDS MEDICAL CENTRE
PONTPRENNAU MEDICAL CENTR, PENTWYN DRIVE, CARDIFF, CF23 7SD
ODS code W97065
1.2 km
CYNCOED MEDICAL PRACTICE
DARTINGTON DRIVE, PONTPRENNAU, CARDIFF, CF23 8SQ
ODS code W97010
1.3 km
BRYNDERWEN SURGERY
CRICKHOWELL ROAD, ST MELLONS, CARDIFF, CF3 0EF
ODS code W97006
2.2 km
LLANEDEYRN HEALTH CENTRE
LLAN HEALTHCARE, WELLBEING HUB @ MAELFA, ROUND WOOD, LLANEDEYRN, CARDIFF, CF23 9PF
ODS code W97008
2.4 km
RUMNEY PRIMARY CARE CENTRE
BARMOUTH ROAD, RUMNEY, CARDIFF, CF3 3LG
ODS code W97027
2.9 km
WILLOWBROOK SURGERY
5 STRATHY ROAD, ST. MELLONS, CARDIFF, CF3 0SH
ODS code W97069
2.9 km
LLANISHEN COURT SURGERY
LLANISHEN COURT, LLANISHEN, CARDIFF, CF14 5YU
ODS code W97013
3.9 km
ROATH HOUSE SURGERY
100 PEN-Y-LAN ROAD, PENYLAN, CARDIFF, CF23 5RH
ODS code W97034
4.3 km
ST. ISAN ROAD SURGERY
46 ST. ISAN ROAD, HEATH CARDIFF, CARDIFF, CF14 4UU
ODS code W97053
4.4 km
NORTH CARDIFF MEDICAL CENTRE
EXCALIBUR DRIVE, THORNHILL, CARDIFF, CF14 9BB
ODS code W97015
4.4 km
THE PENYLAN SURGERY
74 PEN-Y-LAN ROAD, CARDIFF, CF23 5SY
ODS code W97033
4.5 km
FOUR ELMS MEDICAL CENTRE
STERLING CLOSE, FFORDD PENGAM PENGAM GREE, SPLOTT, CARDIFF, CF24 2HB
ODS code W97048
4.6 km
CRWYS MEDICAL CENTRE
THE CRWYS SURGERY, WEDAL ROAD, CARDIFF, CF14 3QX
ODS code W97041
4.7 km
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
- 0.2 miles
Asda
BCT · Pontprennau
- 0.2 miles
Asda
BCT · Pontprennau
- 0.3 miles
Heol Pontprennau
BCT · Pontprennau
- 0.3 miles
Heol Pontprennau
BCT · Pontprennau
- 0.3 miles
Hollington Drive
BCT · Pontprennau
Evidence in context
Schools
45 open schools are in scope, including 0 primary and 0 secondary schools. Glan-Yr-Afon Primary is the nearest published school at 676 m.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
1,910 published events cover 12 months, averaging 159.167 events per published month. The largest recorded category is Violence and sexual offences with 726 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.