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Get started18 Catherine Street is an end-of-terrace house in Llanelli (SA15 2NY). It has a recorded floor area of 102 m² (around 1098 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (October 2015) shows a C (score 72). When first surveyed in July 2014 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good; while lighting dropped from Average to Very Poor. The recommended improvements would push it to B (score 88). The latest certificate is from October 2015, so improvements made since then won't be reflected.
At 102 m² the property is well over the postcode median (75 m² across 26 EPCs), placing it in the larger end of the local stock.
This certificate is over 10 years old and is no longer valid.Expired 08 Oct 2025
18 Catherine Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£146,000
Modelled from EPC, postcode comparables.
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
Habitable Rooms for 18 Catherine Street runs comfortably ahead of the street norm.
EPC Rating
72 (C)
Street avg 64 (D)
Floor Area
102 m²
Street avg 78 m²
CO₂ Emissions
3.3 t/year
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
Post Office — bus stop.
Changes detected from historical EPC data
Heating controls changed
Window efficiency improved
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Are we missing something? Tell us about home improvements to help adjust your valuation.
Median price across the last 5 sales in SA15 2NY: £102,000 (2025–2022).
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Street avg 3.6 t/year
Habitable Rooms
6 rooms
Street avg 4 rooms