6 Boissy Close, Colney Heath Lane, St Albans, AL4 0UE

6 Boissy Close is a mid-terrace house in St Albans (AL4 0UE). It has a recorded floor area of 111 m² (around 1195 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (December 2014) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since July 2009. Between certificates, window efficiency went from Very Poor to Average; while roof efficiency dropped from Average to Poor and lighting dropped from Average to Very Poor. The recommended improvements would lift it to A (score 108), a 3-band jump. The latest certificate is from December 2014, so improvements made since then won't be reflected.

Across 2002–2014, sale prices on this property compounded at 4.9% per year. Today's modelled estimate of £601,000 sits 51.2% above the 2014 sale of £397,500. On a £-per-square-foot basis, the last sale (£333/sq ft) was about 15.6% above the typical sold price in the postcode. 3 planning records sit against the property, 1 approved, 0 refused. Past consents include a garage conversion, meaningful when judging how the property has evolved. It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs). Last changed hands 12 years ago, in June 2014.