21 Birds Close, Welwyn Garden City, AL7 4AR

21 Birds Close is a three-bedroom semi-detached house in Welwyn Garden City (AL7 4AR). It has a recorded floor area of 80 m² (around 861 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (July 2025) shows a C (score 71). When first surveyed in March 2015 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Average to Good; while window efficiency dropped from Average to Poor and lighting dropped from Very Good to Average. The recommended improvements would push it to B (score 84).

It hasn't traded since September 2004, a hold of 22 years that's notably long for the area. Sale prices here have outpaced England HPI: 13.8% per year against 0% for the wider region. Today's modelled estimate of £432,000 sits 140% above the 2004 sale of £180,000. On a £-per-square-foot basis, the last sale (£209/sq ft) was about 15.9% below the postcode norm. One planning record on file: an extension approved in 2002. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved.