Our Data Sources
4, Monmouth Street, Mountain Ash has a single entry in the Land Registry from August 2014 and a single entry in the EPC database dated February 2018.
We combine this information with that 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, Monmouth Street, Mountain Ash, we estimate a market value of £108,008 and a rental value of £756 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £95,664 and £670 per month respectively.
Plot Size
HM Land Registry records the plot of land for 4, Monmouth Street, Mountain Ash as measuring 141 m2.
That makes it the 7th largest plot in the postcode, where 16 of the 20 other houses have recorded plot data.
Energy Efficiency
4, Monmouth Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 10 Feb 2018.
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 4, Monmouth Street, Mountain Ash completed on 8th August 2014 at £63,000 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 134.6% over the period since August 2014.
- Sold Aug 2014£63,000
Similar Properties Sold Nearby
Over the past 2 years 275 properties similar to 4, Monmouth Street, Mountain Ash have sold within a radius of 1.2 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 13th November 2025, was 14, Monmouth Street, Mountain Ash, CF45 3NJ, a freehold house which sold for £80,000.
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.
More reading links
Location Comparison
Of the 20 addresses on Monmouth Street, Mountain Ash, CF45, 4, Monmouth Street, Mountain Ash comes out as the 5th largest and the 5th most expensive in our analysis of the public data.
It is also £58k less expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- Penrhiwceiber|700 m away
- Mountain Ash|2.2 km away
- Quakers Yard|2.7 km away
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.
