Flat 3, 20 Park Street, Towcester, NN12 6DQ

Flat 3 is a one-bedroom mid-terrace house in Towcester (NN12 6DQ). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to before 1900 and council tax band A. At 49 m² this is the largest unit on EPC record across the building (34–49 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 (31 versus a best of 61). The latest certificate (October 2019) shows an F (score 31), near the bottom of the EPC scale. Earlier certificates rated it D (November 2008); the latest reading is 2 bands lower. Between certificates, lighting went from Poor to Very Good; while wall efficiency dropped from Good to Very Poor and main heating dropped from Poor to Very Poor. The recommended improvements would lift it to D (score 65), a 2-band jump. Main heating runs on electricity.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Last sale on file: £155,000 in November 2024. Across the public record there are 5 sales, relatively high churn for a single property. Across 2000–2024, sale prices on this property compounded at 4.9% per year. On a £-per-square-foot basis, the last sale (£294/sq ft) was about 30.7% above the typical sold price in the postcode.