Our Data Sources
23, Pentwyn Avenue, Mountain Ash has no recent1 records in the Land Registry and a single entry in the EPC database dated May 2021.
We combine this information with public data 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.
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 23, Pentwyn Avenue, Mountain Ash, we estimate a market value of £93,221 and a rental value of £633 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £82,567 and £561 per month respectively.
Plot Size
HM Land Registry records the plot of land for 23, Pentwyn Avenue, Mountain Ash as measuring 153 m2.
That makes it the 31st largest plot in the postcode, where 63 of the 66 other houses have recorded plot data.
Energy Efficiency
23, Pentwyn Avenue, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 27 May 2021.
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 23, Pentwyn Avenue, Mountain Ash completed on 12th July 1996 at £12,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
- Sold Jul 1996£12,000
Similar Properties Sold Nearby
Since 2015 75 properties similar to 23, Pentwyn Avenue, Mountain Ash have sold within a radius of 1.4 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 12th June 2026, was 206, Bryntirion, Mountain Ash, CF45 4EJ, a freehold house which sold for £80,000.
Read more about house prices in CF45.
- Sold Jun 2026£80,000 | 3 Bed House206, Bryntirion, Mountain Ash, CF45 4EJ206, Bryntirion, Mountain Ash, CF45 4EJ
- Sold May 2026£95,000 | 3 Bed House17, Homerton Street, Mountain Ash, CF45 4YP17, Homerton Street, Mountain Ash, CF45 4YP
- Sold Dec 2025£82,950 | 3 Bed House96, Bryntirion, Mountain Ash, CF45 4EX96, Bryntirion, Mountain Ash, CF45 4EX
- Sold Nov 2025£88,000 | 3 Bed House134, Bryntirion, Mountain Ash, CF45 4EX134, Bryntirion, Mountain Ash, CF45 4EX
- Sold Oct 2025£60,500 | 3 Bed House123, Pentwyn Avenue, Mountain Ash, CF45 4YE123, Pentwyn Avenue, Mountain Ash, CF45 4YE
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 £95,695, ranging from £79,186 to £139,750.
- 21 Pentwyn Avenue
3 Bed House | 4 m | Est. Value: £90,669
- 25 Pentwyn Avenue
3 Bed House | 6 m | Est. Value: £88,041
- 19 Pentwyn Avenue
3 Bed House | 10 m | Est. Value: £91,598
- 17 Pentwyn Avenue
3 Bed House | 14 m | Est. Value: £81,303
- 29 Pentwyn Avenue
3 Bed House | 17 m | Est. Value: £80,779
Location Comparison
Of the 111 addresses on Pentwyn Avenue, Mountain Ash, CF45, 23, Pentwyn Avenue, Mountain Ash comes out as the 31st largest and the 65th most expensive in our analysis of the public data.
It is also £74k less expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- Penrhiwceiber|1.0 km away
- Quakers Yard|2.2 km away
- Abercynon|2.7 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
