89b, Chapel Lane, High Wycombe, HP12 4BS

89b is a property in High Wycombe (HP12 4BS). It has a recorded floor area of 43 m² (around 464 sq ft), construction records dating it to 1930-1949 and council tax band B. The latest certificate (August 2011) shows an E (score 47), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 73), a 2-band jump. Main heating runs on electricity. The latest certificate is from August 2011, so improvements made since then won't be reflected. At 43 m² this is the 10th smallest of 59 units on EPC record in the building, where floor areas span 23–201 m². The building's EPC ratings span F to B across 59 units on file.

At 43 m² it sits well below the postcode median (71 m² across 58 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 74% of similar EPCs). On the market in May 2018 and unlisted since — roughly 8 years. Across the public record there are 5 sales, relatively high churn for a single property. Across 2000–2018, sale prices on this property compounded at 6% per year. On a £-per-square-foot basis, the last sale (£388/sq ft) was about 42.6% above the typical sold price in the postcode.