Grooms Court, Flat 5, Old Coach Drive, High Wycombe, HP11 1AU

Grooms Court is a one-bedroom mid-terrace house in High Wycombe (HP11 1AU). It has a recorded floor area of 33 m² (around 355 sq ft), construction records dating it to 1983-1990 and council tax band B. At 33 m² this is the 4th smallest of 8 units on EPC record in Grooms Court, where floor areas span 31–46 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (March 2019) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it B (April 2009); the latest reading is 2 bands lower. Between certificates, window efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump. Main heating runs on electricity.

Held since April 1999 — that's 27 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 £153,000 sits 159.3% above the 1999 sale of £59,000. On a £-per-square-foot basis, the last sale (£166/sq ft) was about 48.4% below the postcode norm.