21 Amersham Avenue, Langdon Hills, Basildon, SS16 6SJ

21 Amersham Avenue is a three-bedroom detached house in Langdon Hills, Basildon, Basildon (SS16 6SJ). It has a recorded floor area of 87 m² (around 937 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (March 2009) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 72). The latest certificate is from March 2009, so improvements made since then won't be reflected.

Untraded for 17 years, with the last transfer in September 2009. Across the public record there are 4 sales, relatively high churn for a single property. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 87 m² the property is well over the postcode median (65 m² across 18 EPCs), placing it in the larger end of the local stock. Across 1998–2009, sale prices on this property compounded at 8.5% per year. Today's modelled estimate of £431,000 sits 75.9% above the 2009 sale of £245,000. On a £-per-square-foot basis, the last sale (£261/sq ft) was about 17.1% above the typical sold price in the postcode.