21 Bonham Court, Kettering, NN16 8NJ

21 Bonham Court is a two-bedroom semi-detached house in Kettering (NN16 8NJ). It has a recorded floor area of 53 m² (around 570 sq ft), construction records dating it to 1976-1982 and council tax band A. The latest certificate (January 2016) shows an F (score 38), near the bottom of the EPC scale. The rating has held steady at F across 2 certificates since August 2010. Between certificates, lighting went from Good to Very Good. The recommended improvements would lift it to D (score 58), a 2-band jump. Main heating runs on electricity. The latest certificate is from January 2016, so improvements made since then won't be reflected. At 53 m² this is the 4th smallest of 40 units on EPC record in the building, where floor areas span 52–103 m². The building's EPC ratings span F to C, with this unit at the bottom. On EPC score it ranks last in the building (38 versus a best of 78).

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1995–2021, sale prices on this property compounded at 6% per year. Today's modelled estimate of £117,000 is 10.4% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£186/sq ft) was about 44.7% above the typical sold price in the postcode. Last sale on file: £106,000 in August 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.