Our Data Sources
4, William Street, Mountain Ash has no records in the the Land Registry and a single entry in the EPC database dated March 2025.
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
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 4, William Street, Mountain Ash, we estimate a market value of £159,361 and a rental value of £898 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £141,148 and £795 per month respectively.
Plot Size
HM Land Registry records the plot of land for 4, William Street, Mountain Ash as measuring 115 m2.
That makes it the 20th largest plot in the postcode, where 27 of the 33 other houses have recorded plot data.
Energy Efficiency
4, William Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 13 Mar 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 3 properties similar to 4, William Street, Mountain Ash have sold within a radius of 1.4 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 8th May 2025, was 23, William Street, Mountain Ash, CF45 4RW, a freehold house which sold for £155,000.
Read more about house prices in CF45.
- Sold May 2025£155,000 | 3 Bed House23, William Street, Mountain Ash, CF45 4RW23, William Street, Mountain Ash, CF45 4RW
- Sold Feb 2025£117,000 | 3 Bed House9, Gertrude Street, Mountain Ash, CF45 4RL9, Gertrude Street, Mountain Ash, CF45 4RL
- Sold Sep 2021£130,000 | 3 Bed House24, William Street, Mountain Ash, CF45 4RW24, William Street, Mountain Ash, CF45 4RW
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 33 addresses on William Street, Abercynon, Mountain Ash, CF45, 4, William Street, Mountain Ash comes out as the 22nd largest and the 22nd most expensive in our analysis of the public data.
It is also £6k less expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- 200mAbercynon
- 1.9kmQuakers Yard
- 3.6kmPenrhiwceiber
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.
