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Get started21 Smawthorne Grove is a mid-terrace house in Castleford (WF10 5AS). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1967-1975 and council tax band A. The latest certificate (November 2023) shows an E (score 49), well below the UK norm with real room to improve. Earlier certificates rated it D (November 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor and roof efficiency went from Good to Very Good; while hot-water efficiency dropped from Average to Very Poor and main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 74), a 2-band jump. Main heating runs on electricity. At 57 m² this is the 2nd smallest of 40 units on EPC record in the building, where floor areas span 34–101 m². The building's EPC ratings span G to C across 40 units on file.
Sale prices here have outpaced England HPI: 7.6% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£204/sq ft) was about 109.5% above the typical sold price in the postcode. Most recent transfer: November 2023 at £125,000. Across the public record there are 4 sales, relatively high churn for a single property. At 57 m² it's 23% smaller than the typical home in the postcode (74 m² median across 39 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 90% of similar EPCs).
Recommended upgrades on file would lift this property by multiple EPC bands.
Price for 21 Smawthorne Grove has grown more than fourfold since the 2001 starting point.
£136,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.6% per year over 23 years.
£125,000
Growth on file: 7.6% per year over 23 years.
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Smawthorne Lane Smawthorne Ave — bus stop.

Daytime· 07:00 – 23:00
54.2dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
Wall insulation improved
Roof insulation improved
Are we missing something? Tell us about home improvements to help adjust your valuation.
10 November 2023Most recent
£125,000
+45.3%over 8 months2 March 2023
£86,000
+83.0%over 20 years10 January 2003
£47,000
+100.0%over 1 year16 February 2001
£23,500
Median price across the last 5 sales in WF10 5AS: £129,000 (2025–2025).
Closest school
0.3 km
Smawthorne Henry Moore Academy. 16 schools nearby.
Night-time· 23:00 – 07:00
42.2dB
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