Are you a property professional?Get qualified leads from motivated homeowners.
Get startedAre you a property professional?Get qualified leads from motivated homeowners.
Get started12 Marsh Street is a mid-terrace house in Llanelli (SA15 1AU). It has a recorded floor area of 104 m² (around 1119 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (January 2023) shows a C (score 69), just inside the C band. When first surveyed in May 2010 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 83).
Sale prices here have outpaced England HPI: 1.9% per year against 0% for the wider region. Today's modelled estimate of £146,000 is 42.4% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£92/sq ft) was about 60.1% above the typical sold price in the postcode. A recent sale: £102,500 in January 2025. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs).
12 Marsh Street valuation sits well clear of the typical sold price in this postcode.
£146,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.9% per year over 19 years.
£102,500
Growth on file: 1.9% per year over 19 years.
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
12 Marsh Street outperforms the street on price per m² by a wide margin.
Price per m²
£986
Street avg £521
Floor Area
104 m²
Street avg 115 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
Hick Street — bus stop.
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency decreased
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
29 January 2025Most recent
£102,500
+42.4%over 18 years7 July 2006
£72,000
Median price across the last 5 sales in SA15 1AU: £80,000 (2024–2019).
An AI-written breakdown of everything that matters
Detailed EPC data
Full energy ratings, history and recommendations
Related properties
Comparable homes and street-level pricing
Full planning history
Every application and decision on record
Ad-free · Instant access · Secure Stripe checkout · One-off payment
Street avg 6 rooms
CO₂ Emissions
4.0 t/year
Street avg 5.8 t/year
SA15 1PD