17a, Armstrong Street, Swindon, SN1 2AA

17a is an end-of-terrace house in Swindon (SN1 2AA). It has a recorded floor area of 37 m² (around 398 sq ft), construction records dating it to 1900-1929 and council tax band A. At 37 m² this is the smallest unit on EPC record across the building (37–104 m²). The building's EPC ratings span F to B across 28 units on file. The latest certificate (February 2020) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in January 2009 the rating was F, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Good, lighting went from Poor to Very Good and main heating went from Poor to Good. The recommended improvements would push it to C (score 76).

It hasn't traded since January 1998, a hold of 28 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £139,000 sits 264.8% above the 1998 sale of £38,105. On a £-per-square-foot basis, the last sale (£96/sq ft) was about 28.5% below the postcode norm. At 37 m² it sits well below the postcode median (81 m² across 27 EPCs), making it one of the more compact homes locally.