Flat 1, 21 Hester Street, Northampton, NN2 6AP

Flat 1 is a one-bedroom detached house in Northampton (NN2 6AP). It has a recorded floor area of 47 m² (around 507 sq ft), construction records dating it to 1900-1929 and council tax band A. At 47 m² this is the 3rd smallest of 4 units on EPC record in the building, where floor areas span 41–53 m². The building's EPC ratings span F to C, with this unit at the top. On EPC score it ranks first in the building (69 versus a worst of 26). The latest certificate (February 2011) shows a C (score 69), just inside the C band. Main heating runs on electricity. The latest certificate is from February 2011, so improvements made since then won't be reflected.

It hasn't traded since November 2006, a hold of 20 years that's notably long for the area. At 47 m² it sits well below the postcode median (141 m² across 26 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 77% of similar EPCs). Across 1996–2006, sale prices on this property compounded at 18.2% per year. Today's modelled estimate of £113,000 is 41.3% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£158/sq ft) was about 40.4% above the typical sold price in the postcode.