27a, High Street, Hemel Hempstead, HP1 3AA

27a is a mid-terrace house in Hemel Hempstead (HP1 3AA). It has a recorded floor area of 234 m² (around 2519 sq ft), construction records dating it to 1900-1929 and council tax band D. At 234 m² this is the largest unit on EPC record across the building (18–234 m²). The building's EPC ratings span F to C, with this unit at the top. The latest certificate (June 2019) shows a C (score 71). The recommended improvements would push it to B (score 83).

Held since November 2003 — that's 23 years off the open market, well above the local norm. At 234 m² the property is well over the postcode median (45 m² across 30 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 70% of similar EPCs). Today's modelled estimate of £510,000 sits 126.7% above the 2003 sale of £225,000. On a £-per-square-foot basis, the last sale (£89/sq ft) was about 71.5% below the postcode norm. 4 planning records sit against the property, 2 approved, 2 refused. Past consents include an extension and subdivision, meaningful when judging how the property has evolved.