11 Quantock Close, Harlington, Hayes, UB3 5LS

11 Quantock Close is a two-bedroom semi-detached house in Harlington, Hayes, Hayes (UB3 5LS). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (August 2025) shows a D (score 57), a step below the typical UK home. When first surveyed in September 2012 the rating was F, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Very Poor to Average; while window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 75). Main heating runs on electricity. At 58 m² this is the 5th smallest of 12 units on EPC record in the building, where floor areas span 41–77 m². The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (57 versus a best of 74). Other recorded features include a conservatory and outbuildings.

Untraded for 27 years, with the last transfer in March 1999. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £297,000 sits 304.1% above the 1999 sale of £73,500. On a £-per-square-foot basis, the last sale (£118/sq ft) was about 47.1% below the postcode norm.