Our Data Sources
80, Lock Street, Mountain Ash has a single entry in the Land Registry from February 2026 and a single entry in the EPC database dated December 2025.
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
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 80, Lock Street, Mountain Ash is in very good condition we estimate a sale value of £216,531 and a rental value of £998 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £191,784 and a rental value of £884 per month.
Plot Size
According to data from HM Land Registry, 80, Lock Street, Mountain Ash sits on a plot of 341 m2.
We have plot size data on 41 out of 49 other houses in the postcode and 80, Lock Street, Mountain Ash sits on the 2nd largest plot.
Energy Efficiency
80, Lock Street, Mountain Ash has an Energy Performance Rating (EPC) of F. This is based on the most recent assessment, dated 05 Dec 2025.
The property is connected to mains gas and has partial double glazing. It is heated using Room heaters, wood logs.
Sold Prices
According to HM Land Registry, 80, Lock Street, Mountain Ash was last sold on 10th February 2026 for £180,000 and was recorded as a freehold house.
The property has only had this single sale since 1995.
Since February 2026, the market for similar properties has dropped by 7.7%.
- Sold Feb 2026£180,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 46 sales of properties similar to 80, Lock Street, Mountain Ash within a radius of 1.3 kilometres over the last 2 years.
The most recent example is 20, Fife Street, Mountain Ash, CF45 4TU, a freehold house which sold for £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 May 2024£150,000 | 4 Bed House16, Fife Street, Mountain Ash, CF45 4TU16, Fife Street, Mountain Ash, CF45 4TU
- Sold Aug 2021£135,000 | 4 Bed House5, Fife Street, Mountain Ash, CF45 4TU5, Fife Street, Mountain Ash, CF45 4TU
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Lock Street, Abercynon, Mountain Ash, CF45 has a total of 82 addresses. According to our analysis of all the public data, 80, Lock Street, Mountain Ash is the 9th largest and the 6th most expensive property on the street.
When compared to the postcode district it is £46k more expensive than the average property in CF45.
More reading links
Schools Nearby
Public Transport Nearby
- Abercynon|700 m away
- Quakers Yard|1.3 km away
- Penrhiwceiber|3.5 km away
Available Internet Speeds
According to recent data from Ofcom, Superfast Broadband is available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.
