Our Data Sources
20, Heol Islwyn, Swansea has a single entry in the Land Registry from June 2007 and a single entry in the EPC database dated June 2014.
We combine this information with that 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 20, Heol Islwyn, Swansea, we estimate a market value of £262,393 and a rental value of £1,296 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £232,405 and £1,148 per month respectively.
Plot Size
HM Land Registry records the plot of land for 20, Heol Islwyn, Swansea as measuring 213 m2.
That makes it the 36th largest plot in the postcode, where all 50 other houses have recorded plot data.
Energy Efficiency
20, Heol Islwyn, Swansea has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 20 Jun 2014.
The property is not 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 20, Heol Islwyn, Swansea completed on 25th June 2007 at £169,995 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 133.8% over the period since June 2007.
- Sold Jun 2007£169,995
Similar Properties Sold Nearby
Over the past 2 years 72 properties similar to 20, Heol Islwyn, Swansea have sold within a radius of 1.3 kilometres, per the Land Registry and our network of Estate Agents.
The latest, on the 18th December 2025, was 27, Gelli Deg, Swansea, SA5 4PB, a freehold house which sold for £265,000.
Read more about house prices in SA5.
- Sold Dec 2025£265,000 | 3 Bed House27, Gelli Deg, Swansea, SA5 4PB27, Gelli Deg, Swansea, SA5 4PB
- Sold Nov 2025£265,000 | 3 Bed House35, Heol Iscoed, Swansea, SA5 4NG35, Heol Iscoed, Swansea, SA5 4NG
- Sold Apr 2022£249,995 | 3 Bed House35, Heol Islwyn, Swansea, SA5 4NZ35, Heol Islwyn, Swansea, SA5 4NZ
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 50 addresses on Heol Islwyn, Fforestfach, Swansea, SA5, 20, Heol Islwyn, Swansea comes out as the 37th largest and the 36th most expensive in our analysis of the public data.
It is also £27k more expensive than the average property across the SA5 district.
More reading links
Schools Nearby
Public Transport Nearby
- Gowerton|2.8 km away
- Swansea|4.8 km away
- Llangennech|7.2 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.
