11a, Arthur Street, Gloucester, GL1 1QY

11a is a mid-terrace house in Gloucester (GL1 1QY). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (September 2022) shows a C (score 69), just inside the C band. When first surveyed in May 2009 the rating was F, the property has climbed 3 bands since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Very Poor to Very Good and main heating went from Very Poor to Good; while wall efficiency dropped from Good to Very Poor. At 46 m² this is the 13th smallest of 39 units on EPC record in the building, where floor areas span 29–191 m². The building's EPC ratings span E to B across 39 units on file.

It hasn't traded since August 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Across 2000–2009, sale prices on this property compounded at 6.7% per year. Today's modelled estimate of £122,000 sits 87.7% above the 2009 sale of £65,000. On a £-per-square-foot basis, the last sale (£131/sq ft) was about 37.8% above the typical sold price in the postcode. At 46 m² it sits well below the postcode median (75 m² across 38 EPCs), making it one of the more compact homes locally.