CF23 8SJ maps, stats, and open data
CF23 8SJ lies on Borage Close in Pontprennau, Cardiff. CF23 8SJ is located in the Pontprennau and Old St Mellons electoral ward, within the unitary authority of Cardiff and the Welsh Parliamentary constituency of Cardiff North. The Local Health Board is Cardiff and Vale University and the police force is South Wales. This postcode has been in use since June 1999.
CF23 8SJ maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
CF23 8SJ geodata
| Easting | 320029 |
| Northing | 181989 |
| Latitude | 51.531123 |
| Longitude | -3.154271 |
Where is CF23 8SJ?
| Street | Borage Close |
| Locality | Pontprennau |
| Town/City | Cardiff |
| Country | Wales |
| Postcode District | CF23 |
CF23 8SJ Elevation
Elevation or altitude of CF23 8SJ as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 40m | 131ft |
Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.
➜ How high above sea level am I? Find the elevation of your current position using your device's GPS.
Politics
| Ward | Pontprennau And Old St Mellons |
|---|---|
| Constituency | Cardiff North |
House Prices
Sales of detached houses in CF23 8SJ
2025 14 FEB £435,000 |
2023 18 DEC £415,000 |
2023 1 DEC £442,500 |
2021 17 DEC £410,000 |
2021 16 APR £396,250 |
2021 26 FEB £275,000 |
2019 3 APR £320,000 |
2018 15 MAY £320,000 |
2017 11 AUG £350,000 |
2016 8 FEB £262,500 |
Licence: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Transport
Nearest bus stops to CF23 8SJ
| Ty Cerrig (Pentwyn Road) | Pentwyn | 50m |
| Ty Cerrig (Pentwyn Road) | Pentwyn | 67m |
| Aldi (Glyn Coed Road) | Pentwyn | 256m |
| Pentwyn Aldi (Pentwyn Road) | Pentwyn | 257m |
| Aldi (Glyn Coed Road) | Pentwyn | 275m |
Nearest railway stations to CF23 8SJ
| Llanishen Station | 1.9km |
| Heath High Level Station | 2.5km |
| Heath Low Level Station | 2.6km |
Broadband
Broadband access in CF23 8SJ (2020 data)
| Percentage of properties with Next Generation Access | 100.0% |
| Percentage of properties with Superfast Broadband | 100.0% |
| Percentage of properties with Ultrafast Broadband | 100.0% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in CF23 8SJ (2019 data)
Download
| Median download speed | 70.0Mbps |
| Average download speed | 72.7Mbps |
| Maximum download speed | 350.00Mbps |
Upload
| Median upload speed | 1.3Mbps |
| Average upload speed | 7.2Mbps |
| Maximum upload speed | 18.86Mbps |
Broadband limitations in CF23 8SJ (2020 data)
| Percentage of properties unable to receive 2Mbps | 0.0% |
| Percentage of properties unable to receive 5Mbps | 0.0% |
| Percentage of properties unable to receive 10Mbps | 0.0% |
| Percentage of properties unable to receive 30Mbps | 0.0% |
CF23 8SJ gas and electricity consumption
Estimated total energy consumption in CF23 8SJ by fuel type, 2015.
Gas
| Consumption (kWh) | 324,352 |
|---|---|
| Meter count | 26 |
| Mean (kWh/meter) | 12,475 |
| Median (kWh/meter) | 13,200 |
Electricity
| Consumption (kWh) | 92,731 |
|---|---|
| Meter count | 25 |
| Mean (kWh/meter) | 3,709 |
| Median (kWh/meter) | 2,882 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in CF23 8SJ, for 2015.
- Meter count: The total number of meters in CF23 8SJ.
- Mean: The mean average consumption per meter, in kWh.
- Median: The median average consumption per meter, in kWh.
Source: Postcode level electricity estimates: 2015 (experimental)
Licence: Open Government Licence
Deprivation
10% of Welsh postcodes are less deprived than CF23 8SJ:Food Standards Agency
Three nearest food hygiene ratings to CF23 8SJ (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to CF23 8SJ
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Llandennis Avennue | 17:30 | 12:30 | 210m |
| Cyncoed Road Post Office | 18:30 | 12:00 | 1,034m |
| Bryn Celyn | 17:30 | 11:30 | 1,262m |
CF23 8SJ ITL and CF23 8SJ LAU
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for CF23 8SJ:
| ITL 1 Code | Name |
|---|---|
| TLL | Wales |
| ITL 2 Code | Name |
| TLL2 | East Wales |
| ITL 3 Code | Name |
| TLL22 | Cardiff and Vale of Glamorgan |
| LAU 1 Code | Name |
| W06000015 | Cardiff |
CF23 8SJ census areas
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for CF23 8SJ:
| Code | Name | |
|---|---|---|
| OA | W00009500 | |
| LSOA | W01001841 | Cardiff 003A |
| MSOA | W02000369 | Cardiff 003 |
Nearest postcodes to CF23 8SJ
| CF23 8SP | Hyssop Close | 79m |
| CF23 8SH | Peppermint Drive | 84m |
| CF23 7DT | Glyn Rhosyn | 112m |
| CF23 8SB | Lovage Close | 113m |
| CF23 8SA | Dartington Drive | 125m |
| CF23 7DN | Ty Cerrig | 132m |
| CF23 8SN | Tarragon Way | 144m |
| CF23 8SG | Sutton Grove | 149m |
| CF23 7DS | Glyn Rhosyn | 150m |
| CF23 7DR | Glyn Rhosyn | 162m |
- Contains OS data © Crown copyright and database right (2026)
- Contains Royal Mail data © Royal Mail copyright and Database right (2026)
- Contains National Statistics data © Crown copyright and database right (2026)
- Data produced by Land Registry © Crown copyright (2026)
- Contains Environment Agency data licensed under the Open Government Licence v3.0
- Everything else © GetTheData Publishing Limited (2026)
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