Cromwell House, Flat 4, 149 Midland Road, Wellingborough, NN8 1NB

Cromwell House is a one-bedroom semi-detached house in Wellingborough (NN8 1NB). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to before 1900 and council tax band A. At 41 m² this is the smallest unit on EPC record across Cromwell House (41–63 m²). The building's EPC ratings span F to D, with this unit at the bottom. On EPC score it ranks last in the building (38 versus a best of 55). The latest certificate (April 2024) shows an F (score 38), near the bottom of the EPC scale. Earlier certificates rated it D (July 2013); the latest reading is 2 bands lower. Between certificates, hot-water efficiency went from Poor to Average and lighting went from Average to Very Good; while wall efficiency dropped from Poor to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 71), a 3-band jump. Main heating runs on electricity.

At 41 m² it's 22.6% smaller than the typical home in the postcode (53 m² median across 45 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last sale on file: £115,000 in July 2024. Across the public record there are 5 sales, relatively high churn for a single property. Across 2005–2024, sale prices on this property compounded at 2.4% per year. On a £-per-square-foot basis, the last sale (£261/sq ft) was about 157.6% above the typical sold price in the postcode.