35a, High Street, Hemel Hempstead, HP1 3AA

35a is a two-bedroom mid-terrace house in Hemel Hempstead (HP1 3AA). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (June 2022) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in December 2009 the rating was G, the property has climbed 3 bands since. Between certificates, window efficiency went from Very Poor to Good, hot-water efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to C (score 72). At 78 m² this is the 27th smallest of 31 units on EPC record in the building, where floor areas span 18–234 m². The building's EPC ratings span F to C across 31 units on file.

Untraded for 17 years, with the last transfer in November 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 78 m² the property is well over the postcode median (45 m² across 30 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £286,000 sits 93.9% above the 2009 sale of £147,500. On a £-per-square-foot basis, the last sale (£176/sq ft) was about 43.9% below the postcode norm.