Our Data Sources
18, St. Johns Road, Porth has a single entry in the Land Registry from September 2022 and a single entry in the EPC database dated July 2022.
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.
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 18, St. Johns Road, Porth, we estimate a market value of £137,679 and a rental value of £860 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £121,944 and £761 per month respectively.
Plot Size
HM Land Registry records the plot of land for 18, St. Johns Road, Porth as measuring 314 m2.
That makes it the 2nd largest plot in the postcode, where all 6 other houses have recorded plot data.
Energy Efficiency
18, St. Johns Road, Porth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Jul 2022.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 18, St. Johns Road, Porth completed on 30th September 2022 at £115,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 12.1% over the period since September 2022.
- Sold Sep 2022£115,000
Similar Properties Sold Nearby
Over the past 2 years 146 properties similar to 18, St. Johns Road, Porth have sold within a radius of 900 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 2nd September 2025, was 11, Heol Aneurin, Porth, CF39 8LN, a freehold house which sold for £40,000.
Read more about house prices in CF39.
- Sold Sep 2025£40,000 | 3 Bed House11, Heol Aneurin, Porth, CF39 8LN11, Heol Aneurin, Porth, CF39 8LN
- Sold Feb 2025£148,000 | 3 Bed House28, Heol Aneurin, Porth, CF39 8LN28, Heol Aneurin, Porth, CF39 8LN
- Sold Feb 2023£139,000 | 3 Bed House32, Heol Aneurin, Porth, CF39 8LN32, Heol Aneurin, Porth, CF39 8LN
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 57 addresses on St. Johns Road, Tonyrefail, Porth, CF39, 18, St. Johns Road, Porth comes out as the 11th largest and the 17th most expensive in our analysis of the public data.
It is also £16k less expensive than the average property across the CF39 district.
More reading links
Schools Nearby
Public Transport Nearby
- Porth|3.1 km away
- Dinas (Rhondda)|3.6 km away
- Trehafod|4.0 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.












