20 Mill Street, Aylesbury, HP20 1BN

20 Mill Street is a three-bedroom end-of-terrace house in Aylesbury (HP20 1BN). It has a recorded floor area of 106 m² (around 1143 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (September 2009) shows a D (score 59), a step below the typical UK home. The rating has held steady at D across 2 certificates since July 2009. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Average to Good and lighting went from Average to Good. The recommended improvements would push it to C (score 76). The latest certificate is from September 2009, so improvements made since then won't be reflected. The home occupies a corner plot.

Held since June 1995 — that's 31 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 106 m² the property is well over the postcode median (69 m² across 10 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 70% of similar EPCs). Today's modelled estimate of £335,000 sits 532.1% above the 1995 sale of £53,000. On a £-per-square-foot basis, the last sale (£46/sq ft) was about 78.8% below the postcode norm. One planning record on file: an extension approved in 2010. Past consents include an extension, meaningful when judging how the property has evolved.