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Get started11 Catherine Street is a mid-terrace house in Llanelli (SA15 2NY). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (October 2024) shows a C (score 73). When first surveyed in February 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Average to Good and window efficiency went from Poor to Average. The recommended improvements would push it to B (score 91).
Sale prices here have outpaced England HPI: 2.1% per year against 0% for the wider region. Today's modelled estimate of £121,000 is 18.6% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£175/sq ft) was about 87% above the typical sold price in the postcode. At 54 m² it's 28.5% smaller than the typical home in the postcode (76 m² median across 26 EPCs). Sold July 2022 for £102,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£121,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.1% per year over 18 years.
£102,000
Growth on file: 2.1% per year over 18 years.
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Detailed AI analysis
Price per m² for 11 Catherine Street runs comfortably ahead of the street norm.
Price per m²
£1,889
Street avg £1,078
Floor Area
54 m²
Street avg 79 m²
Habitable Rooms
3 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
Post Office — bus stop.
Changes detected from historical EPC data
Windows upgraded, improving insulation
Loft insulation upgraded to recommended levels
Mechanical ventilation installed
Heating controls upgraded for better temperature management
Wall insulation improved
More low energy lighting installed
Ventilation system changed
Are we missing something? Tell us about home improvements to help adjust your valuation.
11 July 2022Most recent
£102,000
+45.7%over 17 years10 September 2004
£70,000
Median price across the last 5 sales in SA15 2NY: £92,000 (2025–2021).
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Street avg 4 rooms
CO₂ Emissions
1.9 t/year
Street avg 3.6 t/year
SA15 2BW