20 Sibleys Rise, South Heath, Great Missenden, HP16 9QQ

20 Sibleys Rise is an end-of-terrace house in South Heath, Great Missenden, Great Missenden (HP16 9QQ). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (December 2022) shows a D (score 65), on the cusp of jumping into the C band. Earlier certificates rated it C (April 2009); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to C (score 70). Main heating runs on oil. At 50 m² this is the 3rd smallest of 31 units on EPC record in the building, where floor areas span 45–158 m². The building's EPC ratings span F to C across 31 units on file.

Held since December 1996 — that's 29 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 £264,000 sits 340% above the 1996 sale of £60,000. On a £-per-square-foot basis, the last sale (£111/sq ft) was about 60.2% below the postcode norm.