Our Data Sources
21, Heol Pentwyn, Cardiff has 21 entries in the Land Registry, most recently in January 2026 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 5 out of 5 and is considered of high accuracy.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
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 Pentwyn, Cardiff, we estimate a market value of £292,257 and a rental value of £1,614 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £258,856 and £1,430 per month respectively.
Plot Size
HM Land Registry records the plot of land for 21, Heol Pentwyn, Cardiff as measuring 207 m2.
That makes it the 12th largest plot in the postcode, where all 43 other houses have recorded plot data.
Energy Efficiency
21, Heol Pentwyn, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 01 Aug 2025.
The property is connected to mains gas and has high performance glazing. It is heated using a boiler and radiators (mains gas).
Sold Prices
The most recent sale of 21, Heol Pentwyn, Cardiff completed on 30th January 2026 at £282,500 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold twice.
Values of comparable properties have risen by 1.6% over the period since January 2026.
- Sold Jan 2026£282,500
- Sold Sep 2003£105,000
Similar Properties Sold Nearby
Since 2007 40 properties similar to 21, Heol Pentwyn, Cardiff have sold within a radius of 670 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 22nd August 2025, was 29, Heol Pentwyn, Cardiff, CF14 7DD, a freehold house which sold for £250,000.
Read more about house prices in CF14.
- Sold Aug 2025£250,000 | 3 Bed House29, Heol Pentwyn, Cardiff, CF14 7DD29, Heol Pentwyn, Cardiff, CF14 7DD
- Sold Mar 2025£295,000 | 3 Bed House31, Heol Pentwyn, Cardiff, CF14 7DD31, Heol Pentwyn, Cardiff, CF14 7DD
- Sold Oct 2023£249,950 | 3 Bed House30, Heol Pant Y Rhyn, Cardiff, CF14 7DF30, Heol Pant Y Rhyn, Cardiff, CF14 7DF
- Sold Feb 2023£290,000 | 3 Bed House46, Ash Grove, Cardiff, CF14 1BG46, Ash Grove, Cardiff, CF14 1BG
- Sold Aug 2022£255,000 | 3 Bed House35, Heol Pant Y Rhyn, Cardiff, CF14 7DA35, Heol Pant Y Rhyn, Cardiff, CF14 7DA
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 £295,099, ranging from £245,363 to £351,465.
- 20 Heol Pentwyn
3 Bed House | 8 m | Est. Value: £288,142
- 23 Heol Pentwyn
3 Bed House | 12 m | Est. Value: £286,952
- 19 Heol Pentwyn
3 Bed House | 15 m | Est. Value: £299,149
- 25A Heol Pentwyn
3 Bed House | 33 m | Est. Value: £262,909
- 29 Heol Pant Y Rhyn
3 Bed House | 34 m | Est. Value: £291,669
Location Comparison
Of the 62 addresses on Heol Pentwyn, Cardiff, CF14, 21, Heol Pentwyn, Cardiff comes out as the 36th largest and the 37th most expensive in our analysis of the public data.
It is also £94k less expensive than the average property across the CF14 district.
More reading links
Schools Nearby
Public Transport Nearby
- Coryton|300 m away
- Whitchurch (Cardiff)|500 m away
- Rhiwbina|1.0 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.
