11b, Granville Road, Sevenoaks, TN13 1EX

11b is a one-bedroom semi-detached house in Sevenoaks (TN13 1EX). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1930-1949 and council tax band C. At 44 m² this is the smallest unit on EPC record across the building (44–308 m²). The building's EPC ratings span F to C across 14 units on file. The latest certificate (November 2021) shows a D (score 62), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2009. Between certificates, window efficiency went from Poor to Average, hot-water efficiency went from Average to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Poor. The recommended improvements would push it to C (score 69).

It hasn't traded since June 2010, a hold of 16 years that's notably long for the area. Across the public record there are 5 sales, relatively high churn for a single property. At 44 m² it sits well below the postcode median (108 m² across 13 EPCs), making it one of the more compact homes locally. Across 1995–2010, sale prices on this property compounded at 8.1% per year. Today's modelled estimate of £252,000 is 42.4% above the 2010 sale price. On a £-per-square-foot basis, the last sale (£374/sq ft) was about 27.2% above the typical sold price in the postcode.