15 Mendip Close, Harlington, Hayes, UB3 5LH

15 Mendip Close is a three-bedroom semi-detached house in Harlington, Hayes, Hayes (UB3 5LH). It has a recorded floor area of 66 m² (around 710 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (December 2018) shows a D (score 64), on the cusp of jumping into the C band. Earlier certificates rated it C (November 2008); the latest reading is one band lower. Between certificates, lighting went from Poor to Very Good; while roof efficiency dropped from Poor to Very Poor. At 66 m² this is the 9th smallest of 24 units on EPC record in the building, where floor areas span 53–112 m². The building's EPC ratings span F to C across 24 units on file. Other recorded features include a balcony.

Held since June 1996 — that's 30 years off the open market, well above the local norm. 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 £304,000 sits 457.8% above the 1996 sale of £54,500. On a £-per-square-foot basis, the last sale (£77/sq ft) was about 66.5% below the postcode norm.