Our Data Sources
21, Heol Seddon, Cardiff has a single entry in the Land Registry from December 2014 and a single entry in the EPC database dated August 2025.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 21, Heol Seddon, Cardiff, we estimate a market value of £300,035 and a rental value of £1,667 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £265,745 and £1,477 per month respectively.
Plot Size
HM Land Registry records the plot of land for 21, Heol Seddon, Cardiff as measuring 226 m2.
That makes it the 30th largest plot in the postcode, where all 60 other houses have recorded plot data.
Energy Efficiency
21, Heol Seddon, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 28 Aug 2025.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
The most recent sale of 21, Heol Seddon, Cardiff completed on 10th December 2014 at £120,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 48.4% over the period since December 2014.
- Sold Dec 2014£120,000
Similar Properties Sold Nearby
Since 2020 176 properties similar to 21, Heol Seddon, Cardiff have sold within a radius of 540 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 8th January 2026, was 28, Glyn Simon Close, Cardiff, CF5 2RZ, a freehold house which sold for £300,000.
Read more about house prices in CF5.
- Sold Jan 2026£300,000 | 3 Bed House28, Glyn Simon Close, Cardiff, CF5 2RZ28, Glyn Simon Close, Cardiff, CF5 2RZ
- Sold May 2025£293,000 | 3 Bed House26, Pace Close, Cardiff, CF5 2QZ26, Pace Close, Cardiff, CF5 2QZ
- Sold Dec 2024£280,000 | 3 Bed House29, Tangmere Drive, Cardiff, CF5 2PP29, Tangmere Drive, Cardiff, CF5 2PP
- Sold Nov 2024£270,000 | 3 Bed House20, Duxford Close, Cardiff, CF5 2PR20, Duxford Close, Cardiff, CF5 2PR
- Sold Aug 2024£300,000 | 3 Bed House28, Mathew Walk, Cardiff, CF5 2QW28, Mathew Walk, Cardiff, CF5 2QW
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £366,490, ranging from £261,581 to £463,001.
- 23 Heol Seddon
3 Bed House | 11 m | Est. Value: £309,725
- 1 Epstein Close
3 Bed House | 16 m | Est. Value: £340,944
- 3 Epstein Close
3 Bed House | 24 m | Est. Value: £317,317
- 1 Woolmer Close
4 Bed House | 25 m | Est. Value: £370,086
- 5 Epstein Close
3 Bed House | 30 m | Est. Value: £261,581
Location Comparison
Of the 60 addresses on Heol Seddon, Cardiff, CF5, 21, Heol Seddon, Cardiff comes out as the 32nd largest and the 31st most expensive in our analysis of the public data.
It is also £8k less expensive than the average property across the CF5 district.
More reading links
Schools Nearby
Public Transport Nearby
- Danescourt|500 m away
- Fairwater|1.0 km away
- Llandaf|1.1 km away
Available Internet Speeds
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
