15 Chilgrove Avenue, Blackrod, Bolton, BL6 5TR

15 Chilgrove Avenue is a one-bedroom semi-detached house in Blackrod, Bolton, Bolton (BL6 5TR). It has a recorded floor area of 25 m² (around 269 sq ft), construction records dating it to 1967-1975 and council tax band A. At 25 m² this is the 3rd smallest of 19 units on EPC record in the building, where floor areas span 24–184 m². The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (June 2019) shows an E (score 46), well below the UK norm with real room to improve. Earlier certificates rated it D (January 2009); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Poor and window efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 77), a 2-band jump. Main heating runs on electricity.

Untraded for 29 years, with the last transfer in May 1997. Across 1996–1997, sale prices on this property compounded at -13.4% per year. Today's modelled estimate of £108,000 sits 800% above the 1997 sale of £12,000. On a £-per-square-foot basis, the last sale (£45/sq ft) was about 32.4% below the postcode norm. At 25 m² it sits well below the postcode median (43 m² across 18 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 78% of similar EPCs).