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Get started1 Marsh Street is an end-of-terrace house in Llanelli (SA15 1AU). It has a recorded floor area of 128 m² (around 1378 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (October 2025) shows a C (score 76), near the top of the C band. When first surveyed in October 2019 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good; while window efficiency dropped from Average to Poor. The recommended improvements would push it to B (score 85).
Today's modelled estimate of £174,000 sits 117.5% above the 2020 sale of £80,000. At 128 m² it's 20.2% larger than the typical home in the postcode (107 m² median across 12 EPCs). Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Last sale on file: £80,000 in January 2020.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£174,000
Modelled from EPC, postcode comparables.
£80,000
Recorded with HM Land Registry.
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On epc rating, 1 Marsh Street stands well clear of the street.
Price per m²
£625
Street avg £593
Floor Area
128 m²
Street avg 113 m²
Habitable Rooms
6 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
Hick Street — bus stop.
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Wall insulation improved
Are we missing something? Tell us about home improvements to help adjust your valuation.
16 January 2020Most recent
£80,000
Median price across the last 5 sales in SA15 1AU: £96,000 (2025–2019).
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Street avg 6 rooms
CO₂ Emissions
3.3 t/year
Street avg 5.9 t/year