43 Underwood House, Gregory Gardens, Northampton, NN3 2BF

43 Underwood House is a two-bedroom end-of-terrace house in Northampton (NN3 2BF). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 2003-2006 and council tax band C. At 46 m² this is the smallest unit on EPC record across the building (46–67 m²). The building's EPC ratings span D to B across 15 units on file. The latest certificate (April 2021) shows a C (score 74). When first surveyed in October 2010 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Good to Very Good; while wall efficiency dropped from Very Good to Good and roof efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 81). Main heating runs on electricity.

A recent sale: £140,000 in June 2026. Across the public record there are 4 sales, relatively high churn for a single property. Across 2011–2026, sale prices on this property compounded at 4.1% per year. On a £-per-square-foot basis, the last sale (£283/sq ft) was about 78.2% above the typical sold price in the postcode. At 46 m² it's 17.9% smaller than the typical home in the postcode (56 m² median across 63 EPCs).