21 Castle Avenue, Datchet, Slough, SL3 9BA

21 Castle Avenue is a four-bedroom detached house in Datchet, Slough, Slough (SL3 9BA). It has a recorded floor area of 204 m² (around 2196 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (April 2022) shows a C (score 79), near the top of the C band. When first surveyed in August 2017 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Very Good, window efficiency went from Average to Good and lighting went from Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 85). The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal.

At 204 m² the property is well over the postcode median (119 m² across 10 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. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension, a porch and partial demolition, meaningful when judging how the property has evolved. Across 2017–2022, sale prices on this property compounded at 19.7% per year. On a £-per-square-foot basis, the last sale (£494/sq ft) was about 47% above the typical sold price in the postcode. Last sale on file: £1,085,000 in May 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.