Our Data Sources
42, William Street, Porth has 2 entries in the Land Registry, most recently in October 2019 and a single entry in the EPC database dated August 2019.
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 42, William Street, Porth, we estimate a market value of £153,891 and a rental value of £901 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £136,303 and £798 per month respectively.
Plot Size
HM Land Registry records the plot of land for 42, William Street, Porth as measuring 114 m2.
That makes it the 10th largest plot in the postcode, where 29 of the 35 other houses have recorded plot data.
Energy Efficiency
42, William Street, Porth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 01 Aug 2019.
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 42, William Street, Porth completed on 31st October 2019 at £95,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold twice.
Values of comparable properties have risen by 44.8% over the period since October 2019.
- Sold Oct 2019£95,000
- Sold Jan 2007£85,750
Similar Properties Sold Nearby
Since 2013 275 properties similar to 42, William Street, Porth have sold within a radius of 1.1 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 21st April 2026, was 97, Ynyshir Road, Porth, CF39 0EN, a freehold house which sold for £160,000.
Read more about house prices in CF39.
- Sold Apr 2026£160,000 | 3 Bed House97, Ynyshir Road, Porth, CF39 0EN97, Ynyshir Road, Porth, CF39 0EN
- Sold Apr 2026£135,000 | 3 Bed House2, Llanwonno Road, Porth, CF39 0HU2, Llanwonno Road, Porth, CF39 0HU
- Sold Dec 2025£128,000 | 3 Bed House38, Church Terrace, Porth, CF39 0ET38, Church Terrace, Porth, CF39 0ET
- Sold Sep 2025£156,500 | 3 Bed House12, Station Road, Porth, CF39 0HA12, Station Road, Porth, CF39 0HA
- Sold Mar 2025£90,000 | 3 Bed House13, Graig Road, Porth, CF39 0NS13, Graig Road, Porth, CF39 0NS
Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Explore Nearby Properties
The surrounding properties have an average estimated value of £139,837, ranging from £122,255 to £157,980.
- 41 William Street
3 Bed House | 4 m | Est. Value: £146,562
- 40 William Street
3 Bed House | 9 m | Est. Value: £143,993
- 45 William Street
3 Bed House | 16 m | Est. Value: £157,980
- 26 William Street
3 Bed House | 21 m | Est. Value: £122,255
- 25 William Street
3 Bed House | 22 m | Est. Value: £135,648
Location Comparison
Of the 68 addresses on William Street, Porth, CF39, 42, William Street, Porth comes out as the 29th largest and the 13th most expensive in our analysis of the public data.
It is also £2k less expensive than the average property across the CF39 district.
More reading links
Schools Nearby
Public Transport Nearby
- Porth|1.4 km away
- Dinas (Rhondda)|2.2 km away
- Trehafod|2.6 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.





