7 Acorn House, Sun Street, Biggleswade, SG18 0BN

7 Acorn House is a one-bedroom detached house in Biggleswade (SG18 0BN). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1983-1990 and council tax band A. At 40 m² this is the 2nd smallest of 9 units on EPC record in the building, where floor areas span 39–62 m². The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (65 versus a best of 80). The latest certificate (March 2025) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2015. Between certificates, window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 72).

Sale prices here have outpaced England HPI: 6.9% per year against 0% for the wider region. Today's modelled estimate of £146,000 is 39% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£244/sq ft) was about 29.2% above the typical sold price in the postcode. Last changed hands 11 years ago, in July 2015. Across the public record there are 4 sales, relatively high churn for a single property. One planning record on file: new windows approved in 2008. Past consents include new windows, meaningful when judging how the property has evolved. It lags the bulk of the postcode on energy efficiency (less efficient than 88% of similar EPCs).