Our Data Sources
11, Lock Street, Mountain Ash has 31 entries in the Land Registry , most recently in June 2021 and a single entry in the EPC database dated February 2021.
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
In very good condition, we estimate 11, Lock Street, Mountain Ash would be worth £187,852, with a potential rental value of £956 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £166,384, with a rental value of £846 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
11, Lock Street, Mountain Ash occupies a 107 m2 plot as recorded by HM Land Registry.
All 33 other houses in this postcode have recorded plot sizes, and this one ranks as the 26th largest.
Energy Efficiency
11, Lock Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 05 Feb 2021.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
11, Lock Street, Mountain Ash last changed hands on 28th June 2021, selling for £140,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold 3 times since 1995.
The market for similar properties has risen by 16.7% since June 2021.
- Sold Jun 2021£140,000
- Sold Sep 2018£104,995
- Sold Aug 2003£65,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 128 sales of comparable properties within 1.3 kilometres of 11, Lock Street, Mountain Ash across the last 2 years.
Most recently, 20, Fife Street, Mountain Ash, CF45 4TU, a freehold house, sold at £170,000 on the 5th December 2025.
Read more about house prices in CF45.
- Sold Dec 2025£170,000 | 3 Bed House20, Fife Street, Mountain Ash, CF45 4TU20, Fife Street, Mountain Ash, CF45 4TU
- Sold Jul 2025£165,000 | 3 Bed House5, Gwendoline Terrace, Mountain Ash, CF45 4TE5, Gwendoline Terrace, Mountain Ash, CF45 4TE
- Sold Apr 2023£165,000 | 3 Bed House15, Fife Street, Mountain Ash, CF45 4TU15, Fife Street, Mountain Ash, CF45 4TU
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 11, Lock Street, Mountain Ash as the 18th largest and the 17th most expensive of the 82 addresses on Lock Street, Abercynon, Mountain Ash, CF45.
Against the CF45 postcode district average, it is £18k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Abercynon|600 m away
- Quakers Yard|1.3 km away
- Penrhiwceiber|3.5 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.
