21a, Market Street, Kettering, NN16 0AH

21a is a semi-detached house in Kettering (NN16 0AH). It has a recorded floor area of 40 m² (around 431 sq ft) and construction records dating it to 2022. At 40 m² this is the 6th smallest of 17 units on EPC record in the building, where floor areas span 30–106 m². The building's EPC ratings span E to C across 17 units on file. The latest certificate (July 2022) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2022. Main heating runs on electricity: electricity, unspecified tariff.

2 planning records sit against the property, 2 approved, 0 refused. Past consents include subdivision and a basement excavation, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. On a £-per-square-foot basis, the last sale (£307/sq ft) was about 84.1% above the typical sold price in the postcode. At 40 m² it's 20% smaller than the typical home in the postcode (50 m² median across 16 EPCs). Sold January 2020 for £132,000.