43b, Upton Park, Slough, SL1 2DA

43b is a two-bedroom detached house in Slough (SL1 2DA). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (April 2016) shows an E (score 45), well below the UK norm with real room to improve. Earlier certificates rated it D (November 2008); the latest reading is one band lower. Between certificates, roof efficiency went from Very Poor to Good; while window efficiency dropped from Good to Average and lighting dropped from Good to Average. The recommended improvements would lift it to C (score 69), a 2-band jump. The latest certificate is from April 2016, so improvements made since then won't be reflected. At 79 m² this is the 89th smallest of 96 units on EPC record in the building, where floor areas span 22–205 m². The building's EPC ratings span G to B across 96 units on file.

It hasn't traded since September 2003, a hold of 23 years that's notably long for the area. At 79 m² the property is well over the postcode median (43 m² across 95 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 87% of similar EPCs). Today's modelled estimate of £260,000 sits 73.3% above the 2003 sale of £150,000. On a £-per-square-foot basis, the last sale (£176/sq ft) was about 34.6% below the postcode norm.