Windsor House, Flat 3, 33 Upton Park, Slough, SL1 2DA

Windsor House is a one-bedroom semi-detached house in Slough (SL1 2DA). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to before 1900 and council tax band C. At 50 m² this is the 5th smallest of 7 units on EPC record in Windsor House, where floor areas span 31–57 m². The building's EPC ratings span G to C, with this unit at the top. On EPC score it ranks first in the building (69 versus a worst of 19). Period features are noted in the property record. The latest certificate (August 2024) shows a C (score 69), just inside the C band. When first surveyed in June 2014 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Average and main heating went from Poor to Average; while lighting dropped from Average to Very Poor. The recommended improvements would push it to B (score 82). Main heating runs on electricity.

Sale prices here have outpaced Slough HPI: 4.7% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£372/sq ft) was about 40% above the typical sold price in the postcode. It changed hands recently, sold February 2025 for £199,950. One planning record on file: partial demolition refused in 2006. The record references conservation-area consent, which constrain future alterations. At 50 m² it's 16.3% larger than the typical home in the postcode (43 m² median across 79 EPCs).