12a, Deanwater Close, Birchwood, Warrington, WA3 6ER

12a is an end-of-terrace house in Birchwood, Warrington, Warrington (WA3 6ER). It has a recorded floor area of 23 m² (around 248 sq ft), construction records dating it to 1983-1990 and council tax band A. At 23 m² this is the 2nd 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, with this unit at the top. The latest certificate (November 2020) shows a C (score 69), just inside the C band. The rating has held steady at C across 3 certificates since January 2010. Between certificates, window efficiency went from Average to Good and lighting went from Average to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Poor to Very Poor. Main heating runs on electricity.

It hasn't traded since April 2010, a hold of 16 years that's notably long for the area. Today's modelled estimate of £107,000 sits 167.5% above the 2010 sale of £40,000. At 23 m² it sits well below the postcode median (73 m² across 40 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs).