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Get started1 Cowper Close is a four-bedroom detached house in Earls Barton, Northampton, Northampton (NN6 0PU). It has a recorded floor area of 135 m² (around 1458 sq ft), construction records dating it to 1967-1975 and council tax band D. The latest certificate (January 2012) shows a D (score 61), on the cusp of jumping into the C band. The latest certificate is from January 2012, so improvements made since then won't be reflected. Other recorded features include a conservatory. Records show the property has been extended at some point in its history.
Sale prices here have outpaced England HPI: 1.4% per year against 0% for the wider region. Today's modelled estimate of £400,000 sits 66.7% above the 2012 sale of £240,000. On a £-per-square-foot basis, the last sale (£165/sq ft) was about 26.4% below the postcode norm. At 135 m² the property is well over the postcode median (104 m² across 6 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2002. Past consents include an extension, a conservatory and partial demolition, meaningful when judging how the property has evolved. On the market in June 2012 and unlisted since — roughly 14 years.
1 Cowper Close's EPC is over a decade old — improvements since won't be reflected.
This certificate is over 10 years old and is no longer valid.Expired 25 Jan 2022
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
1 Cowper Close valuation sits well clear of the typical sold price in this postcode.
£400,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.4% per year over 8 years.
£240,000
Growth on file: 1.4% per year over 8 years.
Floor Area for 1 Cowper Close runs comfortably ahead of the street norm.
Price per m²
£1,772
Street avg £2,581
Floor Area
135 m²
Street avg 102 m²
Habitable Rooms
7 rooms
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Crispin Road — bus stop.

Daytime· 07:00 – 23:00
50.4dB

Extension: Rear of property
Demolish existing lean to conservatory & utility room. Replace with larger sun lounge to incorporate utility.
1 June 2012Most recent
£240,000
+11.6%over 8 years14 May 2004
£215,000
Median price across the last 5 sales in NN6 0PU: £275,000 (2025–2017).
5 Cowper Close Earls Barton Northampton
Sold Aug 2025
4 Cowper Close Earls Barton Northampton
Sold Oct 2023
2 Cowper Close Earls Barton Northampton
Sold Sept 2020
6 Cowper Close Earls Barton Northampton
Sold May 2011
8 Cowper Close Earls Barton Northampton
Sold May 2003
Street avg 4 rooms
CO₂ Emissions
5.3 t/year
Street avg 5.9 t/year
NN6 0LZ
Closest school
0.7 km
Earls Barton Primary School. 2 schools nearby.
Night-time· 23:00 – 07:00
42.4dB
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