Our Data Sources
20, Harris Terrace, Mountain Ash has no records in the the Land Registry and a single entry in the EPC database dated September 2024.
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
In very good condition, we estimate 20, Harris Terrace, Mountain Ash would be worth £113,982, with a potential rental value of £785 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £100,956, with a rental value of £695 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
20, Harris Terrace, Mountain Ash occupies a 135 m2 plot as recorded by HM Land Registry.
Of the 26 other houses in this postcode, 24 have recorded plot sizes, and this one ranks as the 16th largest.
Energy Efficiency
20, Harris Terrace, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 06 Sep 2024.
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
Land Registry records and our Estate Agent network show 242 sales of comparable properties within 1.0 kilometres of 20, Harris Terrace, Mountain Ash across the last 2 years.
Most recently, 60, Morris Avenue, Mountain Ash, CF45 3TW, a freehold house, sold at £155,000 on the 7th November 2025.
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 Mar 2025£82,500 | 3 Bed House3, Morris Avenue, Mountain Ash, CF45 3TW3, Morris Avenue, Mountain Ash, CF45 3TW
- Sold Sep 2024£105,000 | 3 Bed House35, Morris Avenue, Mountain Ash, CF45 3TW35, Morris Avenue, Mountain Ash, CF45 3TW
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 20, Harris Terrace, Mountain Ash as the 22nd largest and the 22nd most expensive of the 26 addresses on Harris Terrace, Penrhiwceiber, Mountain Ash, CF45.
Against the CF45 postcode district average, it is £52k less expensive than the typical property.
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
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












