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Get started4 Caswell Street is a three-bedroom semi-detached house in Llanelli (SA15 1BS). It has a recorded floor area of 106 m² (around 1141 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (January 2025) shows a D (score 57), a step below the typical UK home. When first surveyed in October 2019 the rating was G, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good. The recommended improvements would push it to C (score 73).
Today's modelled estimate of £161,000 sits 136.8% above the 2020 sale of £68,000. On a £-per-square-foot basis, the last sale (£60/sq ft) was about 29.1% below the postcode norm. Most recent transfer: January 2020 at £68,000.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£161,000
Modelled from EPC, postcode comparables.
£68,000
Recorded with HM Land Registry.
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Detailed AI analysis
On years held, 4 Caswell Street runs well behind the street norm.
Price per m²
£642
Street avg £1,002
Floor Area
106 m²
Street avg 111 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Tyisha Road — bus stop.
Changes detected from historical EPC data
Upgraded to gas central heating
Hot water system upgraded
Windows upgraded, improving insulation
Wall insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
15 January 2020Most recent
£68,000
Median price across the last 5 sales in SA15 1BS: £119,000 (2025–2017).
An AI-written breakdown of everything that matters
Detailed EPC data
Full energy ratings, history and recommendations
Related properties
Comparable homes and street-level pricing
Full planning history
Every application and decision on record
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CO₂ Emissions
5.8 t/year
Street avg 6.1 t/year
SA15 1LP