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Get started21 Catherine Street is a three-bedroom mid-terrace house in Llanelli (SA15 2NY). It has a recorded floor area of 67 m² (around 721 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (April 2018) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in July 2010 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Good, hot-water efficiency went from Poor to Good and lighting went from Poor to Very Good. The recommended improvements would lift it to B (score 87), a 2-band jump.
It hasn't traded since November 2010, a hold of 16 years that's notably long for the area. Sale prices here have outpaced England HPI: 2.2% per year against 0% for the wider region. Today's modelled estimate of £128,000 sits 101.6% above the 2010 sale of £63,500.
Recommended upgrades on file would lift this property by multiple EPC bands.
21 Catherine Street valuation sits well clear of the typical sold price in this postcode.
£128,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.2% per year over 7 years.
£63,500
Growth on file: 2.2% per year over 7 years.
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Detailed AI analysis
Floor Area for 21 Catherine Street lags the street by a wide margin.
Price per m²
£948
Street avg £1,137
Floor Area
67 m²
Street avg 79 m²
Habitable Rooms
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
Post Office — bus stop.
Changes detected from historical EPC data
Heating controls changed
Hot water system upgraded
Roof insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
8 November 2010Most recent
£63,500
+15.5%over 6 years15 April 2004
£55,000
Median price across the last 5 sales in SA15 2NY: £102,000 (2025–2022).
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Street avg 4 rooms
CO₂ Emissions
3.2 t/year
Street avg 3.6 t/year
SA15 2BB