Our Data Sources
46, Duffryn Street, Mountain Ash has no recent1 records in the Land Registry and a single entry in the EPC database dated September 2023.
We combine this information with public data 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.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
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 46, Duffryn Street, Mountain Ash, we estimate a market value of £120,542 and a rental value of £821 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £106,766 and £727 per month respectively.
Plot Size
HM Land Registry records the plot of land for 46, Duffryn Street, Mountain Ash as measuring 161 m2.
That makes it the 6th largest plot in the postcode, where 15 of the 19 other houses have recorded plot data.
Energy Efficiency
46, Duffryn Street, Mountain Ash has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 23 Sep 2023.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
The most recent sale of 46, Duffryn Street, Mountain Ash completed on 4th August 2006 at £50,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
- Sold Aug 2006£50,000
Similar Properties Sold Nearby
Since 2018 233 properties similar to 46, Duffryn Street, Mountain Ash have sold within a radius of 500 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 1st May 2026, was 26, Woodland Terrace, Mountain Ash, CF45 3RF, a freehold house which sold for £130,000.
Read more about house prices in CF45.
- Sold May 2026£130,000 | 3 Bed House26, Woodland Terrace, Mountain Ash, CF45 3RF26, Woodland Terrace, Mountain Ash, CF45 3RF
- Sold Apr 2026£95,000 | 3 Bed House16, Lyle Street, Mountain Ash, CF45 3RG16, Lyle Street, Mountain Ash, CF45 3RG
- Sold Nov 2025£120,000 | 3 Bed House29, Cliff Street, Mountain Ash, CF45 3LE29, Cliff Street, Mountain Ash, CF45 3LE
- Sold Sep 2025£112,000 | 3 Bed House31, Napier Street, Mountain Ash, CF45 3HW31, Napier Street, Mountain Ash, CF45 3HW
- Sold Jun 2025£95,000 | 3 Bed House33, Duffryn Street, Mountain Ash, CF45 3NU33, Duffryn Street, Mountain Ash, CF45 3NU
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £105,182, ranging from £74,609 to £135,383.
- 47 Duffryn Street
3 Bed House | 5 m | Est. Value: £115,557
- 48 Duffryn Street
3 Bed House | 13 m | Est. Value: £106,087
- 21 Chancery Lane
3 Bed House | 15 m | Est. Value: £87,512
- 44 Duffryn Street
3 Bed House | 17 m | Est. Value: £126,260
- 49 Duffryn Street
3 Bed House | 18 m | Est. Value: £120,688
Location Comparison
Of the 93 addresses on Duffryn Street, Mountain Ash, CF45, 46, Duffryn Street, Mountain Ash comes out as the 36th largest and the 25th most expensive in our analysis of the public data.
It is also £45k less expensive than the average property across the CF45 district.
More reading links
Schools Nearby
Public Transport Nearby
- Mountain Ash|300 m away
- Fernhill|1.2 km away
- Penrhiwceiber|2.0 km away
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.












