Our Data Sources
41, Lock Street, Mountain Ash has a single entry in the Land Registry from April 2015 and a single entry in the EPC database dated July 2011.
We combine this information with that 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
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 41, Lock Street, Mountain Ash, we estimate a market value of £178,434 and a rental value of £941 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £158,041 and £834 per month respectively.
Plot Size
HM Land Registry records the plot of land for 41, Lock Street, Mountain Ash as measuring 149 m2.
That makes it the 10th largest plot in the postcode, where all 33 other houses have recorded plot data.
Energy Efficiency
41, Lock Street, Mountain Ash has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 20 Jul 2011.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 41, Lock Street, Mountain Ash completed on 17th April 2015 at £115,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 58.1% over the period since April 2015.
- Sold Apr 2015£115,000
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 41, Lock Street, Mountain Ash have sold within a radius of 1.3 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 11th September 2025, was 24, Fife Street, Mountain Ash, CF45 4TU, a freehold house which sold for £143,000.
Read more about house prices in CF45.
- Sold Sep 2025£143,000 | 3 Bed House24, Fife Street, Mountain Ash, CF45 4TU24, Fife Street, Mountain Ash, CF45 4TU
- Sold Apr 2023£165,000 | 3 Bed House15, Fife Street, Mountain Ash, CF45 4TU15, Fife Street, Mountain Ash, CF45 4TU
- Sold Aug 2020£141,000 | 3 Bed House14, Fife Street, Mountain Ash, CF45 4TU14, Fife Street, Mountain Ash, CF45 4TU
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 82 addresses on Lock Street, Abercynon, Mountain Ash, CF45, 41, Lock Street, Mountain Ash comes out as the 29th largest and the 25th most expensive in our analysis of the public data.
It is also £12k more expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- 600mAbercynon
- 1.3kmQuakers Yard
- 3.5kmPenrhiwceiber
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.












