11 Barn Close, Hemel Hempstead, HP3 9PJ

11 Barn Close is a one-bedroom end-of-terrace house in Hemel Hempstead (HP3 9PJ). It has a recorded floor area of 39 m² (around 420 sq ft), construction records dating it to 1976-1982 and council tax band B. At 39 m² this is the smallest unit on EPC record across the building (39–63 m²). The building's EPC ratings span D to C, with this unit at the top. The latest certificate (November 2021) shows a C (score 72). The rating has held steady at C across 3 certificates since May 2009. Between certificates, hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.

It hasn't traded since November 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £189,000 sits 61.5% above the 2009 sale of £117,000. On a £-per-square-foot basis, the last sale (£279/sq ft) was about 20.9% above the typical sold price in the postcode. At 39 m² it's 28.4% smaller than the typical home in the postcode (54 m² median across 15 EPCs).