21 Berwick Place, Welwyn Garden City, AL7 4TU

21 Berwick Place is a detached house in Welwyn Garden City (AL7 4TU). It has a recorded floor area of 59 m² (around 635 sq ft), construction records dating it to 2003-2006 and council tax band C. The latest certificate (April 2012) shows a C (score 76), near the top of the C band. Earlier certificates rated it B (November 2010); the latest reading is one band lower. Between certificates, hot-water efficiency dropped from Very Good to Good and lighting dropped from Average to Very Poor. The latest certificate is from April 2012, so improvements made since then won't be reflected. At 59 m² this is the 8th smallest of 35 units on EPC record in the building, where floor areas span 11–70 m². The building's EPC ratings span D to B across 35 units on file.

Sale prices here have outpaced England HPI: 2.2% per year against 0% for the wider region. Today's modelled estimate of £263,000 is 22.3% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£339/sq ft) was about 19.3% above the typical sold price in the postcode. Last changed hands 11 years ago, in January 2015.