Flat 4, 69 High Street, Hemel Hempstead, HP1 3EJ

Flat 4 is a two-bedroom mid-terrace house in Hemel Hempstead (HP1 3EJ). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 1900-1929 and council tax band C. At 46 m² this is the 4th smallest of 5 units on EPC record in the building, where floor areas span 20–47 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (April 2022) shows a C (score 69), just inside the C band. When first surveyed in July 2011 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good; while roof efficiency dropped from Good to Average.

Held since July 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 46 m² the property is well over the postcode median (33 m² across 4 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). Across 2004–2007, sale prices on this property compounded at 19% per year. Today's modelled estimate of £228,000 is 39% above the 2007 sale price.