Windsor House, Flat 8, 33 Upton Park, Slough, SL1 2DA

Windsor House is a one-bedroom end-of-terrace house in Slough (SL1 2DA). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (January 2021) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in May 2012 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Average to Very Good; while main heating dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 83), a 2-band jump. Main heating runs on electricity. At 43 m² this is the 3rd 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 across 7 units on file.

A recent sale: £167,500 in February 2025. One planning record on file: partial demolition refused in 2006. The record references conservation-area consent, which constrain future alterations. Across 2000–2025, sale prices on this property compounded at 3.9% per year. Today's modelled estimate of £189,000 is 12.8% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£362/sq ft) was about 34.2% above the typical sold price in the postcode.