4a, Bourne Vale, Plaxtol, Sevenoaks, TN15 0QT

4a is a four-bedroom semi-detached house in Plaxtol, Sevenoaks, Sevenoaks (TN15 0QT). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1930-1949 and council tax band E. At 76 m² this is the 9th smallest of 17 units on EPC record in the building, where floor areas span 47–170 m². The building's EPC ratings span E to C across 17 units on file. The latest certificate (April 2016) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 78). Main heating runs on electricity. The latest certificate is from April 2016, so improvements made since then won't be reflected.

Held since May 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2004–2007, sale prices on this property compounded at 5.3% per year. Today's modelled estimate of £455,000 is 28.2% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£434/sq ft) was about 107.2% above the typical sold price in the postcode.