27 By The Mount, Welwyn Garden City, AL7 3SY

27 By The Mount is a three-bedroom end-of-terrace house in Welwyn Garden City (AL7 3SY). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (December 2022) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (December 2010); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would lift it to B (score 83), a 2-band jump. Other recorded features include outbuildings.

Sale prices here have outpaced England HPI: 8.9% per year against 0% for the wider region. Today's modelled estimate of £445,000 is 14.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£407/sq ft) was about 16.2% above the typical sold price in the postcode. At 89 m² the property is well over the postcode median (57 m² across 29 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sold June 2021 for £390,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.