Our Data Sources
99, Pentwyn Avenue, Mountain Ash has 41 entries in the Land Registry, most recently in May 2020 and a single entry in the EPC database dated April 2016.
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.
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 99, Pentwyn Avenue, Mountain Ash, we estimate a market value of £92,718 and a rental value of £632 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £82,122 and £560 per month respectively.
Plot Size
HM Land Registry records the plot of land for 99, Pentwyn Avenue, Mountain Ash as measuring 121 m2.
That makes it the 62nd largest plot in the postcode, where 63 of the 66 other houses have recorded plot data.
Energy Efficiency
99, Pentwyn Avenue, Mountain Ash has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 25 Apr 2016.
The property is connected to mains gas and has fully double glazed windows. It is heated using no system present: electric heaters assumed.
Sold Prices
The most recent sale of 99, Pentwyn Avenue, Mountain Ash completed on 14th May 2020 at £44,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold 4 times.
Values of comparable properties have risen by 131.1% over the period since May 2020.
- Sold May 2020£44,000
- Sold Jun 2016£25,000
- Sold Mar 2003£16,500
Similar Properties Sold Nearby
Since 2011 84 properties similar to 99, Pentwyn Avenue, Mountain Ash have sold within a radius of 1.3 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 10th December 2025, was 96, Bryntirion, Mountain Ash, CF45 4EX, a freehold house which sold for £82,950.
Read more about house prices in CF45.
- 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
- Sold Sep 2025£75,000 | 3 Bed House7, Walsh Street, Mountain Ash, CF45 4YS7, Walsh Street, Mountain Ash, CF45 4YS
- Sold Aug 2025£83,000 | 3 Bed House90, Bryntirion, Mountain Ash, CF45 4EX90, Bryntirion, Mountain Ash, CF45 4EX
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 £104,911, ranging from £77,560 to £155,150.
- 101 Pentwyn Avenue
3 Bed House | 5 m | Est. Value: £77,560
- 97 Pentwyn Avenue
3 Bed House | 6 m | Est. Value: £90,669
- 95 Pentwyn Avenue
3 Bed House | 10 m | Est. Value: £85,968
- 103 Pentwyn Avenue
3 Bed House | 14 m | Est. Value: £91,598
- 93 Pentwyn Avenue
3 Bed House | 15 m | Est. Value: £84,376
Location Comparison
Of the 111 addresses on Pentwyn Avenue, Mountain Ash, CF45, 99, Pentwyn Avenue, Mountain Ash comes out as the 32nd largest and the 66th most expensive in our analysis of the public data.
It is also £75k 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.
