9a, Deanwater Close, Birchwood, Warrington, WA3 6ER

9a is a one-bedroom semi-detached house in Birchwood, Warrington, Warrington (WA3 6ER). It has a recorded floor area of 24 m² (around 258 sq ft), construction records dating it to 1983-1990 and council tax band A. The latest certificate (August 2019) shows a D (score 55), a step below the typical UK home. When first surveyed in November 2009 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Average and lighting went from Average to Very Good; while hot-water efficiency dropped from Very Good to Average. The recommended improvements would push it to C (score 78). Main heating runs on electricity. At 24 m² this is the 3rd smallest of 41 units on EPC record in the building, where floor areas span 22–112 m². The building's EPC ratings span E to C across 41 units on file.

Untraded for 22 years, with the last transfer in June 2004. Across 2000–2004, sale prices on this property compounded at 21.1% per year. Today's modelled estimate of £114,000 sits 123.5% above the 2004 sale of £51,000. On a £-per-square-foot basis, the last sale (£197/sq ft) was about 19.2% above the typical sold price in the postcode. At 24 m² it sits well below the postcode median (73 m² across 40 EPCs), making it one of the more compact homes locally. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.