Our Data Sources
25, Upper William Street, Llanelli has 21 entries in the Land Registry, most recently in February 2007 and a single entry in the EPC database dated June 2013.
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.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
In very good condition, we estimate 25, Upper William Street, Llanelli would be worth £137,586, with a potential rental value of £876 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £121,862, with a rental value of £776 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
25, Upper William Street, Llanelli occupies a 144 m2 plot as recorded by HM Land Registry.
Of the 17 other houses in this postcode, 14 have recorded plot sizes, and this one ranks as the 5th largest.
Energy Efficiency
25, Upper William Street, Llanelli has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 11 Jun 2013.
The property is not connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
25, Upper William Street, Llanelli last changed hands on 16th February 2007, selling for £90,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has risen by 85.2% since February 2007.
- Sold Feb 2007£90,000
- Sold Nov 2005£80,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 255 sales of comparable properties within 460 metres of 25, Upper William Street, Llanelli since 2021.
Most recently, 55, Marble Hall Road, Llanelli, SA15 1NW, a freehold house, sold at £143,000 on the 7th April 2026.
Read more about house prices in SA15.
- Sold Apr 2026£143,000 | 3 Bed House55, Marble Hall Road, Llanelli, SA15 1NW55, Marble Hall Road, Llanelli, SA15 1NW
- Sold Mar 2026£108,000 | 3 Bed House33, Wern Road, Llanelli, SA15 1SP33, Wern Road, Llanelli, SA15 1SP
- Sold Dec 2025£155,000 | 3 Bed House9, Tunnel Road, Llanelli, SA15 1LE9, Tunnel Road, Llanelli, SA15 1LE
- Sold Oct 2025£105,000 | 3 Bed House32, Marble Hall Road, Llanelli, SA15 1NN32, Marble Hall Road, Llanelli, SA15 1NN
- Sold Aug 2025£96,000 | 3 Bed House7, Als Street, Llanelli, SA15 1SN7, Als Street, Llanelli, SA15 1SN
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 £127,657, ranging from £105,337 to £153,885.
- 24 Upper William Street
3 Bed House | 5 m | Est. Value: £109,588
- 23 Upper William Street
3 Bed House | 9 m | Est. Value: £105,337
- 21 Upper William Street
3 Bed House | 18 m | Est. Value: £115,279
- 20 Upper William Street
3 Bed House | 23 m | Est. Value: £109,588
- 29 Upper William Street
4 Bed House | 26 m | Est. Value: £153,668
Location Comparison
Our analysis of the public data ranks 25, Upper William Street, Llanelli as the 8th largest and the 8th most expensive of the 17 addresses on Upper William Street, Llanelli, SA15.
Against the SA15 postcode district average, it is £59k less expensive than the typical property.
More reading links
Schools Nearby
Public Transport Nearby
- Llanelli|1.0 km away
- Bynea|4.1 km away
- Llangennech|5.4 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
