Our Data Sources
1, Castle Street, Merthyr Tydfil has no records in the the Land Registry and a single entry in the EPC database dated February 2018.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 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 1, Castle Street, Merthyr Tydfil, we estimate a market value of £148,227 and a rental value of £837 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £131,287 and £742 per month respectively.
Plot Size
HM Land Registry records the plot of land for 1, Castle Street, Merthyr Tydfil as measuring 78 m2.
That makes it the 3rd largest plot in the postcode, where 3 of the 9 other houses have recorded plot data.
Energy Efficiency
1, Castle Street, Merthyr Tydfil has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 22 Feb 2018.
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 48 properties similar to 1, Castle Street, Merthyr Tydfil have sold within a radius of 1.7 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 27th June 2025, was 12, Castle Street, Merthyr Tydfil, CF48 4BN, a freehold house which sold for £52,000.
Read more about house prices in CF48.
- Sold Jun 2025£52,000 | 2 Bed House12, Castle Street, Merthyr Tydfil, CF48 4BN12, Castle Street, Merthyr Tydfil, CF48 4BN
- Sold Feb 2025£120,000 | 3 Bed House5, Poplar Terrace, Merthyr Tydfil, CF48 4BW5, Poplar Terrace, Merthyr Tydfil, CF48 4BW
- Sold Feb 2024£71,725 | 3 Bed House15, Poplar Terrace, Merthyr Tydfil, CF48 4BW15, Poplar Terrace, Merthyr Tydfil, CF48 4BW
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 9 addresses on Castle Street, Pentrebach, Merthyr Tydfil, CF48, 1, Castle Street, Merthyr Tydfil comes out as the 8th largest and the 8th most expensive in our analysis of the public data.
It is also £34k less expensive than the average property across the CF48 district.
More reading links
Schools Nearby
Public Transport Nearby
- Pentre-Bach|400 m away
- Troed-y-rhiw|1.6 km away
- Merthyr Tydfil|2.5 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.












