9 Doncaster Drive, Northolt, UB5 4AS

9 Doncaster Drive is a three-bedroom semi-detached house in Northolt (UB5 4AS). It has a recorded floor area of 94 m² (around 1012 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (August 2013) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it D (June 2009); the latest reading is one band lower. Between certificates, roof efficiency dropped from Good to Poor and hot-water efficiency dropped from Very Good to Good. The recommended improvements would lift it to B (score 85), a 3-band jump. The latest certificate is from August 2013, so improvements made since then won't be reflected.

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 5 planning records sit against the property, 3 approved, 2 refused. Past consents include a porch, subdivision, an extension and partial demolition, meaningful when judging how the property has evolved. Across 2004–2015, sale prices on this property compounded at 4.3% per year. Today's modelled estimate of £496,000 is 46.7% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£334/sq ft) was about 25% above the typical sold price in the postcode. Last changed hands 11 years ago, in January 2015.