3b, Castle Street, Wallingford, OX10 8DL

3b is a two-bedroom mid-terrace house in Wallingford (OX10 8DL). It has a recorded floor area of 59 m² (around 635 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (February 2021) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (June 2009); the latest reading is one band lower. Between certificates, wall efficiency went from Very Poor to Poor; while window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 73). At 59 m² this is the 5th smallest of 27 units on EPC record in the building, where floor areas span 22–301 m². The building's EPC ratings span E to B across 27 units on file. Period features are noted in the property record.

Sale prices here have outpaced England HPI: 7.4% per year against 0% for the wider region. Today's modelled estimate of £239,000 is 13.8% above the 2017 sale price. At 59 m² it sits well below the postcode median (88 m² across 26 EPCs), making it one of the more compact homes locally. 2 bedrooms is on the smaller side for this postcode, where 4 is the typical count. On the market in November 2017 and unlisted since — roughly 9 years. Across the public record there are 5 sales, relatively high churn for a single property.