Our Data Sources
20, Williamstown, Merthyr Tydfil has 51 entries in the Land Registry, most recently in August 2022 and a single entry in the EPC database dated March 2020.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 20, Williamstown, Merthyr Tydfil is in very good condition we estimate a sale value of £136,689 and a rental value of £816 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £121,068 and a rental value of £723 per month.
Plot Size
According to data from HM Land Registry, 20, Williamstown, Merthyr Tydfil sits on a plot of 56 m2.
We have plot size data on 17 out of 20 other houses in the postcode and 20, Williamstown, Merthyr Tydfil sits on the 3rd largest plot.
Energy Efficiency
20, Williamstown, Merthyr Tydfil has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 20 Mar 2020.
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
According to HM Land Registry, 20, Williamstown, Merthyr Tydfil was last sold on 26th August 2022 for £120,000 and was recorded as a freehold house.
The property has had 5 sales since 1995.
Since August 2022, the market for similar properties has risen by 5.2%.
- Sold Aug 2022£120,000
- Sold Jun 2010£95,000
- Sold Jul 2001£39,500
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 50 sales of properties similar to 20, Williamstown, Merthyr Tydfil within a radius of 810 metres since 2015.
The most recent example is 97, Brecon Road, Merthyr Tydfil, CF47 8NG, a freehold house which sold for £70,000 on the 13th March 2026.
Read more about house prices in CF47.
- Sold Mar 2026£70,000 | 3 Bed House97, Brecon Road, Merthyr Tydfil, CF47 8NG97, Brecon Road, Merthyr Tydfil, CF47 8NG
- Sold Feb 2026£110,000 | 3 Bed House11, Brecon Road, Merthyr Tydfil, CF47 8LS11, Brecon Road, Merthyr Tydfil, CF47 8LS
- Sold Aug 2025£80,000 | 3 Bed House2, Vincent Place, Merthyr Tydfil, CF47 8PT2, Vincent Place, Merthyr Tydfil, CF47 8PT
- Sold Jul 2025£100,000 | 3 Bed House23, Mount Street, Merthyr Tydfil, CF47 8TN23, Mount Street, Merthyr Tydfil, CF47 8TN
- Sold Mar 2025£59,000 | 2 Bed House8, Grawen Terrace, Merthyr Tydfil, CF47 8TH8, Grawen Terrace, Merthyr Tydfil, CF47 8TH
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 £157,611, ranging from £61,494 to £225,382.
- 21 Williamstown
3 Bed House | 6 m | Est. Value: £151,204
- 18 Williamstown
3 Bed House | 14 m | Est. Value: £138,963
- 25 Riverside Park
2 Bed House | 28 m | Est. Value: £182,813
- 26 Riverside Park
3 Bed House | 30 m | Est. Value: £225,382
- 48 The Grawen
3 Bed House | 33 m | Est. Value: £186,447
Location Comparison
Williamstown, Merthyr Tydfil, CF47 has a total of 20 addresses. According to our analysis of all the public data, 20, Williamstown, Merthyr Tydfil is the 18th largest and the 18th most expensive property on the street.
When compared to the postcode district it is £25k less expensive than the average property in CF47.
More reading links
Schools Nearby
Public Transport Nearby
- Merthyr Tydfil|1.2 km away
- Pentre-Bach|3.5 km away
- Troed-y-rhiw|5.3 km away
Available Internet Speeds
According to recent data from Ofcom, Superfast Broadband is available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.












