Our Data Sources
21, Harris Terrace, Mountain Ash has no records in the the Land Registry and a single entry in the EPC database dated April 2025.
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.
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, Harris Terrace, Mountain Ash, we estimate a market value of £119,593 and a rental value of £799 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £105,925 and £708 per month respectively.
Plot Size
HM Land Registry records the plot of land for 21, Harris Terrace, Mountain Ash as measuring 132 m2.
That makes it the 22nd largest plot in the postcode, where 24 of the 26 other houses have recorded plot data.
Energy Efficiency
21, Harris Terrace, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 13 Apr 2025.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Over the past 2 years 261 properties similar to 21, Harris Terrace, Mountain Ash have sold within a radius of 1.0 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 7th November 2025, was 60, Morris Avenue, Mountain Ash, CF45 3TW, a freehold house which sold for £155,000.
Read more about house prices in CF45.
- Sold Nov 2025£155,000 | 3 Bed House60, Morris Avenue, Mountain Ash, CF45 3TW60, Morris Avenue, Mountain Ash, CF45 3TW
- Sold May 2025£69,000 | 3 Bed House11, Morris Avenue, Mountain Ash, CF45 3TW11, Morris Avenue, Mountain Ash, CF45 3TW
- Sold Dec 2024£75,000 | 3 Bed House53, Morris Avenue, Mountain Ash, CF45 3TW53, Morris Avenue, Mountain Ash, CF45 3TW
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 26 addresses on Harris Terrace, Penrhiwceiber, Mountain Ash, CF45, 21, Harris Terrace, Mountain Ash comes out as the 12th largest and the 12th most expensive in our analysis of the public data.
It is also £47k less expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- Penrhiwceiber|300 m away
- Mountain Ash|1.9 km away
- Merthyr Vale|2.8 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
