Postcode district
CF3: house prices and neighbourhoods
The CF3 postcode district (Caerphilly, Cardiff, Newport): 922 live postcodes across 9 neighbourhoods, with official figures as of 14 October 2026.
Typical house price
£260,000
Median of 76 resales of existing houses in CF3, Aug 2025 to Aug 2026.
Source: HM Land Registry Price Paid Data
Typical flat price
£129,750
Median of 12 resales of existing flats in CF3, Aug 2025 to Aug 2026.
Source: HM Land Registry Price Paid Data
Neighbourhoods in CF3
| Neighbourhood | Council | Typical house | Typical flat | Affluence today | Signs of gentrification |
|---|---|---|---|---|---|
| Machen | Caerphilly | £240,000 | – | Affluent | Mixed signs |
| Llanrumney North | Cardiff | £228,750 | – | Below average income | Clear signs |
| Llanrumney South | Cardiff | £237,000 | £126,000 | Below average income | Few signs |
| Pontprennau | Cardiff | £295,500 | £165,000 | Among the most affluent | Mixed signs |
| Pwll-mawr & St Mellons East | Cardiff | £250,000 | £145,000 | Affluent | Few signs |
| Rumney | Cardiff | £275,000 | £110,000 | Affluent | Clear signs |
| St Mellons West | Cardiff | £225,000 | – | Below average income | Few signs |
| Trowbridge | Cardiff | £217,750 | – | Below average income | Moving the other way |
| Marshfield | Newport | £320,000 | £146,000 | Among the most affluent | Some signs |
Each neighbourhood's figures are the median resale prices of houses and flats, Affluence today and the gentrification indication from its own page.
Thinking of buying in CF3?
A full report covers flood risk, schools, crime, your commute, energy, planning and how the area is changing, for the exact home.
Prepare a full report for a home See a sample reportNeighbourhood names: House of Commons Library, MSOA Names, Open Parliament Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0. Contains National Statistics data © Crown copyright and database right 2026. Figures describe the area, not any home, and are not a valuation or a prediction.