Our Data Sources
23, William Street, Swansea has a single entry in the Land Registry from January 2013 and a single entry in the EPC database dated July 2025.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate 23, William Street, Swansea would be worth £218,087, with a potential rental value of £893 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £193,162, with a rental value of £791 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
23, William Street, Swansea occupies a 125 m2 plot as recorded by HM Land Registry.
Of the 32 other houses in this postcode, 30 have recorded plot sizes, and this one ranks as the 13th largest.
Energy Efficiency
23, William Street, Swansea has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 17 Jul 2025.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
23, William Street, Swansea last changed hands on 11th January 2013, selling for £90,000. The transaction was logged as a freehold house by HM Land Registry.
That is its only recorded sale since 1995.
The market for similar properties has risen by 28.2% since January 2013.
- Sold Jan 2013£90,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 96 sales of comparable properties within 470 metres of 23, William Street, Swansea across the last 2 years.
Most recently, 23, Western Street, Swansea, SA1 3JZ, a freehold house, sold at £185,000 on the 11th July 2025.
Read more about house prices in SA1.
- Sold Jul 2025£185,000 | 4 Bed House23, Western Street, Swansea, SA1 3JZ23, Western Street, Swansea, SA1 3JZ
- Sold Sep 2024£180,000 | 4 Bed House74, Argyle Street, Swansea, SA1 3TA74, Argyle Street, Swansea, SA1 3TA
- Sold Jul 2024£175,000 | 4 Bed House41, Glamorgan Street, Swansea, SA1 3SY41, Glamorgan Street, Swansea, SA1 3SY
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 23, William Street, Swansea as the 2nd largest and the 2nd most expensive of the 62 addresses on William Street, Swansea, SA1.
Against the SA1 postcode district average, it is £56k more expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Swansea|1.1 km away
- Llansamlet|6.7 km away
- Gowerton|7.0 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
