27 Athelstan Walk North, Welwyn Garden City, AL7 3SH

27 Athelstan Walk North is a one-bedroom mid-terrace house in Welwyn Garden City (AL7 3SH). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1976-1982 and council tax band B. At 40 m² this is the smallest unit on EPC record across the building (40–58 m²). The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (62 versus a best of 81). The latest certificate (August 2012) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 77). The latest certificate is from August 2012, so improvements made since then won't be reflected.

Sale prices here have outpaced England HPI: 8.3% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£448/sq ft) was about 108.1% above the typical sold price in the postcode. At 40 m² it's 27.3% smaller than the typical home in the postcode (55 m² median across 34 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Most recent transfer: March 2019 at £193,000.