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Get started21 Mansel Street is a two-bedroom semi-detached house in Llanelli (SA15 1DA). It has a recorded floor area of 69 m² (around 743 sq ft), construction records dating it to before 1900 and council tax band B. Tenure is freehold. The latest certificate (February 2026) shows a D (score 62), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2015. Between certificates, roof efficiency dropped from Good to Average and window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 76). This certificate was lodged in the last six months, so the rating reflects current condition.
Sale prices here have outpaced England HPI: 6.3% per year against 0% for the wider region. Today's modelled estimate of £121,000 sits 51.2% above the 2025 sale of £80,000. On a £-per-square-foot basis, the last sale (£108/sq ft) was about 27.3% above the typical sold price in the postcode. A recent sale: £80,000 in February 2025.
The EPC has just been inspected, so the rating reflects current condition.
21 Mansel Street has more than quadrupled in price since its earliest registered sale in 1997.
£121,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.3% per year over 27 years.
£80,000
Growth on file: 6.3% per year over 27 years.
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Detailed AI analysis
Years Held for 21 Mansel Street lags the street by a wide margin.
Price per m²
£1,159
Street avg £1,045
Floor Area
69 m²
Street avg 81 m²
Habitable Rooms
3 rooms
Street avg 4 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
Mansel Street — bus stop.
Changes detected from historical EPC data
Heating controls changed
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
21 February 2025Most recent
£80,000
+14.3%over 6 years20 July 2018
£70,000
-5.4%over 2 years1 July 2016
£74,000
+1.4%over 11 years11 January 2005
£73,000
+156.1%over 6 years16 July 1998
£28,500
+90.0%over 10 months26 September 1997
£15,000
Median price across the last 5 sales in SA15 1DA: £129,995 (2023–2022).
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CO₂ Emissions
3.1 t/year
Street avg 4.1 t/year
SA15 1LP