1 Chartwell Avenue, Northampton, NN3 6NT

1 Chartwell Avenue is a two-bedroom semi-detached house in Northampton (NN3 6NT). It has a recorded floor area of 87 m² (around 941 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (April 2011) shows an E (score 52), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 58). The latest certificate is from April 2011, 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.

Held since August 2011 — that's 15 years off the open market, well above the local norm. At 87 m² it sits well below the postcode median (139 m² across 12 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £251,000 sits 93.1% above the 2011 sale of £130,000. On a £-per-square-foot basis, the last sale (£138/sq ft) was about 29.6% below the postcode norm.