1a, Adele Avenue, Welwyn, AL6 0AU

1a is a five-bedroom detached house in Welwyn (AL6 0AU). It has a recorded floor area of 163 m² (around 1756 sq ft), construction records dating it to 1976-1982 and council tax band G. The latest certificate (July 2009) shows an F (score 37), near the bottom of the EPC scale. The recommended improvements would lift it to D (score 63), a 2-band jump. The latest certificate is from July 2009, so improvements made since then won't be reflected.

It hasn't traded since June 2011, a hold of 15 years that's notably long for the area. At 163 m² the property is well over the postcode median (69 m² across 15 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. 3 planning records sit against the property, 3 approved, 0 refused. Past consents include tree works, meaningful when judging how the property has evolved. Across 1998–2011, sale prices on this property compounded at 5.3% per year. Today's modelled estimate of £942,000 is 41.1% above the 2011 sale price. On a £-per-square-foot basis, the last sale (£380/sq ft) was about 54.9% above the typical sold price in the postcode.