Flat 2, 31 High Street, Hemel Hempstead, HP1 3AA

Flat 2 is a detached house in Hemel Hempstead (HP1 3AA). It has a recorded floor area of 24 m² (around 258 sq ft), construction records dating it to 1900-1929 and council tax band A. At 24 m² this is the smallest unit on EPC record across the building (24–51 m²). The building's EPC ratings span F to D across 5 units on file. The latest certificate (May 2023) shows an E (score 43), well below the UK norm with real room to improve. Earlier certificates rated it D (March 2013); the latest reading is one band lower. Between certificates, lighting went from Poor to Very Good; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Average to Poor. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on electricity.

At 24 m² it sits well below the postcode median (46 m² across 30 EPCs), making it one of the more compact homes locally. Across 2005–2014, sale prices on this property compounded at -0.9% per year. Today's modelled estimate of £144,000 is 48.5% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£375/sq ft) was about 36.3% above the typical sold price in the postcode. On the market in January 2014 and unlisted since — roughly 13 years.