Lewis House, Flat 8, Sorrel Close, Isham, Kettering, NN14 1HX

Lewis House is a semi-detached house in Isham, Kettering, Kettering (NN14 1HX). It has a recorded floor area of 50 m² (around 538 sq ft) and construction records dating it to 1983-1990. At 50 m² this is the smallest unit on EPC record across Lewis House (50–80 m²). The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (70 versus a worst of 59). The latest certificate (October 2016) shows a C (score 70). Main heating runs on electricity.

It hasn't traded since April 2008, a hold of 18 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 1997–2008, sale prices on this property compounded at 6.6% per year. Today's modelled estimate of £137,000 sits 59.3% above the 2008 sale of £86,000. On a £-per-square-foot basis, the last sale (£160/sq ft) was about 21.2% below the postcode norm. At 50 m² it sits well below the postcode median (76 m² across 14 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs).