18 Andrewsfield, Welwyn Garden City, AL7 2PQ

18 Andrewsfield is a semi-detached house in Welwyn Garden City (AL7 2PQ). It has a recorded floor area of 25 m² (around 269 sq ft), construction records dating it to 1991-1995 and council tax band B. At 25 m² this is the 11th smallest of 41 units on EPC record in the building, where floor areas span 24–58 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (July 2025) shows a C (score 72). When first surveyed in August 2010 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Average, lighting went from Very Poor to Good and main heating went from Poor to Average. Main heating runs on electricity.

It hasn't traded since March 2001, a hold of 25 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £133,000 sits 189.4% above the 2001 sale of £45,950. On a £-per-square-foot basis, the last sale (£171/sq ft) was about 40.3% below the postcode norm.