Our Data Sources
12, Clos Islwyn, Swansea has 31 entries in the Land Registry, most recently in February 2007 and no records in the EPC database.
We combine this sold price information with public data of neighbouring properties to estimate the attributes and values.
The local information is scored as 4 out of 5 and is considered of high 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 12, Clos Islwyn, Swansea is in very good condition we estimate a sale value of £356,530 and a rental value of £1,409 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £315,784 and a rental value of £1,248 per month.
Plot Size
According to data from HM Land Registry, 12, Clos Islwyn, Swansea sits on a plot of 258 m2.
We have plot size data on 13 out of 13 other houses in the postcode and 12, Clos Islwyn, Swansea sits on the 12th largest plot.
Sold Prices
According to HM Land Registry, 12, Clos Islwyn, Swansea was last sold on 1st February 2007 for £215,000 and was recorded as a freehold house.
The property has had 3 sales since 1995.
Since February 2007, the market for similar properties has risen by 0.6%.
- Sold Feb 2007£215,000
- Sold Oct 2006£207,575
- Sold Nov 1999£90,450
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 160 sales of properties similar to 12, Clos Islwyn, Swansea within a radius of 910 metres since 2017.
The most recent example is 22, Ffordd Taliesin, Swansea, SA2 7DF, a freehold house which sold for £280,000 on the 10th April 2026.
Read more about house prices in SA2.
- Sold Apr 2026£280,000 | 3 Bed House22, Ffordd Taliesin, Swansea, SA2 7DF22, Ffordd Taliesin, Swansea, SA2 7DF
- Sold Mar 2026£365,000 | 3 Bed House59, Ffordd Taliesin, Swansea, SA2 7DF59, Ffordd Taliesin, Swansea, SA2 7DF
- Sold Jan 2026£335,000 | 3 Bed House6, Twyni Teg, Swansea, SA2 7NS6, Twyni Teg, Swansea, SA2 7NS
- Sold Nov 2025£350,000 | 3 Bed House65, Coleridge Crescent, Swansea, SA2 7ER65, Coleridge Crescent, Swansea, SA2 7ER
- Sold Jul 2025£320,000 | 3 Bed House49, Ffordd Dryden, Swansea, SA2 7PD49, Ffordd Dryden, Swansea, SA2 7PD
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 £345,317, ranging from £298,580 to £420,731.
- 11 Clos Islwyn
3 Bed House | 9 m | Est. Value: £361,511
- 14 Clos Islwyn
4 Bed House | 9 m | Est. Value: £420,731
- 10 Clos Islwyn
3 Bed House | 17 m | Est. Value: £348,537
- 80 Coleridge Crescent
4 Bed House | 17 m | Est. Value: £347,947
- 78 Coleridge Crescent
3 Bed House | 26 m | Est. Value: £314,901
Location Comparison
Clos Islwyn, Killay, Swansea, SA2 has a total of 13 addresses. According to our analysis of all the public data, 12, Clos Islwyn, Swansea is the 13th largest and the 13th most expensive property on the street.
When compared to the postcode district it is £115k more expensive than the average property in SA2.
More reading links
Schools Nearby
Public Transport Nearby
- Gowerton|2.9 km away
- Swansea|5.0 km away
- Bynea|7.7 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.





