Our Data Sources
11, Monmouth Street, Mountain Ash has no records in the the Land Registry and a single entry in the EPC database dated February 2021.
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 11, Monmouth Street, Mountain Ash would be worth £107,304, with a potential rental value of £754 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £95,041, with a rental value of £668 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
11, Monmouth Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 12 Feb 2021.
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 277 sales of comparable properties within 1.1 kilometres of 11, Monmouth Street, Mountain Ash across the last 2 years.
Most recently, 14, Monmouth Street, Mountain Ash, CF45 3NJ, a freehold house, sold at £80,000 on the 13th November 2025.
Read more about house prices in CF45.
- Sold Nov 2025£80,000 | 3 Bed House14, Monmouth Street, Mountain Ash, CF45 3NJ14, Monmouth Street, Mountain Ash, CF45 3NJ
- Sold Apr 2025£123,000 | 3 Bed House21, Glamorgan Street, Mountain Ash, CF45 3HX21, Glamorgan Street, Mountain Ash, CF45 3HX
- Sold Jul 2023£85,000 | 3 Bed House1, Glamorgan Street, Mountain Ash, CF45 3HX1, Glamorgan Street, Mountain Ash, CF45 3HX
•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 11, Monmouth Street, Mountain Ash as the 6th largest and the 6th most expensive of the 20 addresses on Monmouth Street, Mountain Ash, CF45.
Against the CF45 postcode district average, it is £58k less expensive than the typical property.
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Schools Nearby
Public Transport Nearby
- Penrhiwceiber|700 m away
- Mountain Ash|2.2 km away
- Quakers Yard|2.7 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.
