Flat 3, 33 Colwyn Road, Northampton, NN1 3PZ

Flat 3 is a mid-terrace house in Northampton (NN1 3PZ). It has a recorded floor area of 35 m² (around 377 sq ft), construction records dating it to before 1900 and council tax band A. At 35 m² this is the largest unit on EPC record across the building (26–35 m²). The building's EPC ratings span F to D, with this unit at the top. On EPC score it ranks first in the building (60 versus a worst of 30). The latest certificate (September 2023) shows a D (score 60), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since November 2008. Between certificates, lighting went from Poor to Very Good; while main heating dropped from Poor to Very Poor. The recommended improvements would push it to C (score 77). Main heating runs on electricity.

Across 1997–2021, sale prices on this property compounded at 6.2% per year. Today's modelled estimate of £113,000 sits 55.9% above the 2021 sale of £72,500. On a £-per-square-foot basis, the last sale (£192/sq ft) was about 46.9% above the typical sold price in the postcode. At 35 m² it sits well below the postcode median (88 m² across 53 EPCs), making it one of the more compact homes locally. Last sale on file: £72,500 in October 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.