21 Athill Court, St Johns Road, Sevenoaks, TN13 3NF

21 Athill Court is a one-bedroom semi-detached house in Sevenoaks (TN13 3NF). It has a recorded floor area of 33 m² (around 355 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (August 2019) shows a D (score 67), on the cusp of jumping into the C band. When first surveyed in January 2010 the rating was F, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Average, roof efficiency went from Poor to Good and lighting went from Good to Very Good. The recommended improvements would push it to C (score 77). Main heating runs on electricity. At 33 m² this is the 5th smallest of 22 units on EPC record in the building, where floor areas span 29–59 m². The building's EPC ratings span E to C across 22 units on file.

It hasn't traded since February 2001, a hold of 25 years that's notably long for the area. Across 1999–2001, sale prices on this property compounded at 29.3% per year. Today's modelled estimate of £162,000 sits 189% above the 2001 sale of £56,050. On a £-per-square-foot basis, the last sale (£158/sq ft) was about 43.1% below the postcode norm.