11a, Castle Street, Spofforth, Harrogate, HG3 1AP

11a is an end-of-terrace house in Spofforth, Harrogate, Harrogate (HG3 1AP). It has a recorded floor area of 75 m² (around 807 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (June 2019) shows a G (score 9), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 76), a 4-band jump. Main heating runs on electricity. At 75 m² this is the 3rd smallest of 20 units on EPC record in the building, where floor areas span 39–203 m². The building's EPC ratings span G to C, with this unit at the bottom. On EPC score it ranks last in the building (9 versus a best of 77).

At 75 m² it sits well below the postcode median (120 m² across 19 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £217,000 is 35.6% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£198/sq ft) was about 23.4% below the postcode norm. Sold June 2019 for £160,000. One historical planning record sits against the property in 2021.