19a, Briton Road, Northampton, NN3 2BS

19a is a one-bedroom semi-detached house in Northampton (NN3 2BS). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1930-1949 and council tax band B. At 40 m² this is the smallest unit on EPC record across the building (40–137 m²). The building's EPC ratings span F to C, with this unit at the top. The latest certificate (February 2021) shows a C (score 69), just inside the C band. The rating has held steady at C across 2 certificates since February 2011. Between certificates, roof efficiency went from Good to Very Good and lighting went from Good to Very Good; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Good to Average.

Untraded for 21 years, with the last transfer in October 2005. Across 2002–2005, sale prices on this property compounded at 21.2% per year. Today's modelled estimate of £131,000 sits 57.8% above the 2005 sale of £83,000. On a £-per-square-foot basis, the last sale (£193/sq ft) was about 62.3% above the typical sold price in the postcode. At 40 m² it sits well below the postcode median (91 m² across 32 EPCs), making it one of the more compact homes locally. 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.