Our Data Sources
13, William Street, Mountain Ash has no records in the the Land Registry and a single entry in the EPC database dated April 2022.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 13, William Street, Mountain Ash would be worth £186,363, with a potential rental value of £978 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £165,064, with a rental value of £866 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
13, William Street, Mountain Ash occupies a 120 m2 plot as recorded by HM Land Registry.
Of the 33 other houses in this postcode, 27 have recorded plot sizes, and this one ranks as the 6th largest.
Energy Efficiency
13, William Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 14 Apr 2022.
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 122 sales of comparable properties within 1.3 kilometres of 13, William Street, Mountain Ash across the last 2 years.
Most recently, 14, New Street, Mountain Ash, CF45 4NR, a freehold house, sold at £120,000 on the 12th March 2026.
Read more about house prices in CF45.
- Sold Mar 2026£120,000 | 3 Bed House14, New Street, Mountain Ash, CF45 4NR14, New Street, Mountain Ash, CF45 4NR
- Sold Aug 2025£179,950 | 3 Bed House13, New Street, Mountain Ash, CF45 4NR13, New Street, Mountain Ash, CF45 4NR
- Sold Sep 2024£98,000 | 3 Bed House20, William Street, Mountain Ash, CF45 4RW20, William Street, Mountain Ash, CF45 4RW
•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 13, William Street, Mountain Ash as the 2nd largest and the 2nd most expensive of the 33 addresses on William Street, Abercynon, Mountain Ash, CF45.
Against the CF45 postcode district average, it is £17k more expensive than the typical property.
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Schools Nearby
Public Transport Nearby
- Abercynon|200 m away
- Quakers Yard|1.9 km away
- Penrhiwceiber|3.6 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.
