Our Data Sources
20, King Street, Mountain Ash has no records in the the Land Registry and a single entry in the EPC database dated February 2025.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 20, King Street, Mountain Ash would be worth £107,974, with a potential rental value of £732 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £95,634, with a rental value of £648 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
20, King Street, Mountain Ash occupies a 173 m2 plot as recorded by HM Land Registry.
Of the 25 other houses in this postcode, 16 have recorded plot sizes, and this one ranks as the 4th largest.
Energy Efficiency
20, King Street, Mountain Ash has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 05 Feb 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
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 680 metres of 20, King Street, Mountain Ash across the last 2 years.
Most recently, 41, Arthur Street, Mountain Ash, CF45 3BL, a freehold house, sold at £108,000 on the 8th July 2024.
Read more about house prices in CF45.
- Sold Jul 2024£108,000 | 3 Bed House41, Arthur Street, Mountain Ash, CF45 3BL41, Arthur Street, Mountain Ash, CF45 3BL
- Sold Mar 2019£50,000 | 3 Bed House11, Arthur Street, Mountain Ash, CF45 3BL11, Arthur Street, Mountain Ash, CF45 3BL
- Sold Mar 2015£35,000 | 3 Bed House1, Arthur Street, Mountain Ash, CF45 3BL1, Arthur Street, Mountain Ash, CF45 3BL
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 20, King Street, Mountain Ash as the 23rd largest and the 23rd most expensive of the 25 addresses on King Street, Miskin, Mountain Ash, CF45.
Against the CF45 postcode district average, it is £55k less expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- 1.0kmPenrhiwceiber
- 1.0kmMountain Ash
- 2.2kmFernhill
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.












