1 3, Flat F, Lansdowne Square, Northfleet, Gravesend, DA11 9LX

1 3 is a semi-detached house in Northfleet, Gravesend, Gravesend (DA11 9LX). It has a recorded floor area of 52 m² (around 560 sq ft) and construction records dating it to before 1900. The latest certificate (September 2014) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (September 2009); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would push it to C (score 80). The latest certificate is from September 2014, so improvements made since then won't be reflected. At 52 m² this is the 3rd smallest of 8 units on EPC record in 1 3, where floor areas span 46–59 m². The building's EPC ratings span E to C across 8 units on file.

Untraded for 18 years, with the last transfer in January 2008. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Today's modelled estimate of £201,000 is 18.2% above the 2008 sale price.