111b, Abercromby Avenue, High Wycombe, HP12 3BN

111b is a one-bedroom semi-detached house in High Wycombe (HP12 3BN). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (January 2026) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in January 2016 the rating was E, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good; while window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 75). This certificate was lodged in the last six months, so the rating reflects current condition. At 40 m² this is the 2nd smallest of 25 units on EPC record in the building, where floor areas span 38–105 m². The building's EPC ratings span E to C across 25 units on file.

It hasn't traded since January 2001, a hold of 25 years that's notably long for the area. Across 1997–2001, sale prices on this property compounded at 13.3% per year. Today's modelled estimate of £196,000 sits 213.6% above the 2001 sale of £62,500. On a £-per-square-foot basis, the last sale (£145/sq ft) was about 16.3% below the postcode norm. At 40 m² it sits well below the postcode median (81 m² across 24 EPCs), making it one of the more compact homes locally.