131a, Park Street, Aylesbury, HP20 1DU

131a is an end-of-terrace house in Aylesbury (HP20 1DU). It has a recorded floor area of 39 m² (around 420 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (August 2017) shows an E (score 45), well below the UK norm with real room to improve. When first surveyed in June 2010 the rating was F, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor and roof efficiency went from Average to Very Good; while window efficiency dropped from Good to Average and main heating dropped from Poor to Very Poor. The recommended improvements would push it to D (score 66). Main heating runs on electricity.

At 39 m² it sits well below the postcode median (78 m² across 26 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 77% of similar EPCs). Last sold in January 2017, so it's been off the market for around 9 years. Across the public record there are 4 sales, relatively high churn for a single property. Across 1998–2017, sale prices on this property compounded at 6.4% per year. Today's modelled estimate of £165,000 is 32% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£298/sq ft) was about 30% above the typical sold price in the postcode.