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

23 By The Mount is a three-bedroom mid-terrace house in Welwyn Garden City (AL7 3SY). It has a recorded floor area of 83 m² (around 893 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (October 2020) shows a C (score 73). The rating has held steady at C across 2 certificates since February 2010. Between certificates, window efficiency went from Average to Good and lighting went from Average to Good; while roof efficiency dropped from Good to Average. The recommended improvements would push it to B (score 86).

Held since September 2004 — that's 22 years off the open market, well above the local norm. Sale prices here have outpaced England HPI: 14.5% per year against 0% for the wider region. Today's modelled estimate of £401,000 sits 137.3% above the 2004 sale of £169,000. On a £-per-square-foot basis, the last sale (£189/sq ft) was about 49.6% below the postcode norm. At 83 m² the property is well over the postcode median (57 m² across 29 EPCs), placing it in the larger end of the local stock.