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Get started7 Steam Mill Cottages is a two-bedroom mid-terrace house in Box, Corsham, Corsham (SN13 8NY). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (March 2023) shows a C (score 70). When first surveyed in February 2013 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Average to Very Good. The recommended improvements would lift it to A (score 92), a 2-band jump. Period features are noted in the property record.
Sale prices here have outpaced England HPI: 6.8% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£727/sq ft) was about 184.9% above the typical sold price in the postcode. At 42 m² it sits well below the postcode median (73 m² across 4 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the top 10% of properties in this postcode. Last sale on file: £328,500 in September 2023. One historical planning record sits against the property in 2017.
7 Steam Mill Cottages ranks among the most efficient homes in the postcode for energy use.
Replace existing summer house with larger log-cabin garden room
7 Steam Mill Cottages has more than quadrupled in price since its earliest registered sale in 1997.
£334,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.8% per year over 26 years.
£328,500
Growth on file: 6.8% per year over 26 years.
Price per m² for 7 Steam Mill Cottages runs comfortably ahead of the street norm.
Price per m²
£7,821
Street avg £4,791
Floor Area
42 m²
Street avg 74 m²
Habitable Rooms
3 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km

Daytime· 07:00 – 23:00
47.6dB

Changes detected from historical EPC data
Single glazing replaced with double or better glazing
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
20 September 2023Most recent
£328,500
+72.0%over 10 years10 May 2013
£191,000
29 September 2008
£191,000
-4.5%over 1 year21 February 2007
£200,000
+21.2%over 2 years7 May 2004
£165,000
+57.1%over 3 years28 July 2000
£105,000
+75.0%over 2 years28 November 1997
£60,000
Median price across the last 5 sales in SN13 8NY: £249,999 (2023–2011).
Street avg 4 rooms
CO₂ Emissions
1.7 t/year
Street avg 5.0 t/year
SN13 8BY
Primary School — bus stop.
Closest school
0.1 km
Box Church of England Primary School. 1 school nearby.
Night-time· 23:00 – 07:00
40.3dB
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