Blackthorne Cottage, Blackthorne Lane, Ballinger, Great Missenden, HP16 9LN

Blackthorne Cottage is a detached house in Ballinger, Great Missenden, Great Missenden (HP16 9LN). It has a recorded floor area of 173 m² (around 1862 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (October 2021) shows a C (score 78), near the top of the C band. When first surveyed in September 2020 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Average, roof efficiency went from Average to Good and hot-water efficiency went from Poor to Average. The recommended improvements would push it to B (score 81). Main heating runs on electricity.

Held since January 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. At 173 m² the property is well over the postcode median (93 m² across 15 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £1,070,000 sits 457.3% above the 1996 sale of £192,000. On a £-per-square-foot basis, the last sale (£103/sq ft) was about 74.8% below the postcode norm.