11d, Granville Road, Sevenoaks, TN13 1EX

11d is a detached house in Sevenoaks (TN13 1EX). It has a recorded floor area of 94 m² (around 1015 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (March 2012) shows an E (score 39), well below the UK norm with real room to improve. Earlier certificates rated it D (January 2010); the latest reading is one band lower. Between certificates, wall efficiency dropped from Poor to Very Poor and roof efficiency dropped from Good to Very Poor. The latest certificate is from March 2012, so improvements made since then won't be reflected. At 94 m² this is the 4th smallest of 14 units on EPC record in the building, where floor areas span 44–308 m². The building's EPC ratings span F to C across 14 units on file.

Held since September 2003 — that's 23 years off the open market, well above the local norm. Across 2002–2003, sale prices on this property compounded at 26.6% per year. Today's modelled estimate of £418,000 sits 88.7% above the 2003 sale of £221,500. On a £-per-square-foot basis, the last sale (£218/sq ft) was about 23.9% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 77% of similar EPCs).