Our Data Sources
Islwyn, Barmouth has no records in the the Land Registry and a single entry in the EPC database dated July 2010.
We combine this information with public data 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
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 Islwyn, Barmouth is in very good condition we estimate a sale value of £570,970 and a rental value of £335 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £505,716 and a rental value of £297 per month.
Plot Size
According to data from HM Land Registry, Islwyn, Barmouth sits on a plot of 15,930 m2.
We have plot size data on 11 out of 18 other houses in the postcode and Islwyn, Barmouth sits on the 2nd largest plot.
Energy Efficiency
Islwyn, Barmouth has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 12 Jul 2010.
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
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to Islwyn, Barmouth within a radius of 4.8 kilometres over the last 2 years.
The most recent example is Farchynys Lodge, Barmouth, LL42 1TN, a freehold house which sold for £415,000 on the 19th December 2025.
Read more about house prices in LL42.
- Sold Dec 2025£415,000 | 4 Bed HouseFarchynys Lodge, Barmouth, LL42 1TNFarchynys Lodge, Barmouth, LL42 1TN
- Sold Jul 2024£575,000 | 4 Bed HouseBwlch Yr Ysgol, Caerdeon, Barmouth, LL42 1DZBwlch Yr Ysgol, Caerdeon, Barmouth, LL42 1DZ
- Sold Nov 2023£650,000 | 4 Bed House15, Swn Y Dail, Barmouth, LL42 1DT15, Swn Y Dail, Barmouth, LL42 1DT
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Llanaber, Barmouth, LL42 has a total of 227 addresses. According to our analysis of all the public data, Islwyn, Barmouth is the 82nd largest and the 31st most expensive property on the street.
When compared to the postcode district it is £301k more expensive than the average property in LL42.
More reading links
Schools Nearby
Public Transport Nearby
- 2.8kmBarmouth
- 3.3kmMorfa Mawddach
- 3.8kmLlanaber
Available Internet Speeds
According to recent data from Ofcom, there is poor internet coverage in this area which may result in poor or no internet connectivity.
According to recent data from Ofcom, Slow/none broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be very low.
