17 Courtney Close, Northampton, NN4 8FQ

17 Courtney Close is a detached house in Northampton (NN4 8FQ). It has a recorded floor area of 122 m² (around 1313 sq ft), construction records dating it to 2012 onwards and council tax band E. The latest certificate (June 2026) shows a C (score 79), near the top of the C band. Earlier certificates rated it B (May 2016); the latest reading is one band lower. Between certificates, roof efficiency went from Good to Very Good; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. The recommended improvements would push it to B (score 87). This certificate was lodged in the last six months, so the rating reflects current condition.

At 122 m² the property is well over the postcode median (81 m² across 17 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £419,000 is 42% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£225/sq ft) was about 23.2% below the postcode norm. 10 years since the last transfer (June 2016).