Our Data Sources
77, Herbert Street, Mountain Ash has no records in the the Land Registry and a single entry in the EPC database dated March 2026.
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
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 77, Herbert Street, Mountain Ash, we estimate a market value of £144,984 and a rental value of £856 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £128,414 and £758 per month respectively.
Plot Size
HM Land Registry records the plot of land for 77, Herbert Street, Mountain Ash as measuring 106 m2.
That makes it the 12th largest plot in the postcode, where 27 of the 34 other houses have recorded plot data.
Energy Efficiency
77, Herbert Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 20 Mar 2026.
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
Over the past 2 years 3 properties similar to 77, Herbert Street, Mountain Ash have sold within a radius of 1.1 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 31st October 2025, was 68, Mountain Ash Road, Mountain Ash, CF45 4PR, a freehold house which sold for £142,500.
Read more about house prices in CF45.
- Sold Oct 2025£142,500 | 3 Bed House68, Mountain Ash Road, Mountain Ash, CF45 4PR68, Mountain Ash Road, Mountain Ash, CF45 4PR
- Sold Feb 2025£115,000 | 3 Bed House43, Herbert Street, Mountain Ash, CF45 4RH43, Herbert Street, Mountain Ash, CF45 4RH
- Sold Mar 2024£140,000 | 3 Bed House54, Herbert Street, Mountain Ash, CF45 4RG54, Herbert Street, Mountain Ash, CF45 4RG
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Of the 83 addresses on Herbert Street, Abercynon, Mountain Ash, CF45, 77, Herbert Street, Mountain Ash comes out as the 12th largest and the 9th most expensive in our analysis of the public data.
It is also £20k less expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- 200mAbercynon
- 1.8kmQuakers Yard
- 3.4kmPenrhiwceiber
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.












