18a, Ashfield Lane, Chislehurst, BR7 6LQ

18a is a four-bedroom detached house in Chislehurst (BR7 6LQ). It has a recorded floor area of 440 m² (around 4736 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (February 2017) 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 May 2014. Between certificates, window efficiency went from Average to Good, 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 and roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to C (score 70).

Held since August 2002 — that's 24 years off the open market, well above the local norm. At 440 m² the property is well over the postcode median (211 m² across 16 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £1,943,000 sits 237.9% above the 2002 sale of £575,000. On a £-per-square-foot basis, the last sale (£121/sq ft) was about 66.8% below the postcode norm. 3 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.