Kittiwake House, Flat 66, High Street, Slough, SL1 1AG

Kittiwake House is a mid-terrace house in Slough (SL1 1AG). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to 1976-1982 and council tax band B. At 50 m² this is the 35th smallest of 79 units on EPC record in Kittiwake House, where floor areas span 19–70 m². The building's EPC ratings span D to B, with this unit at the bottom. On EPC score it ranks last in the building (67 versus a best of 88). The latest certificate (November 2020) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it B (December 2009); the latest reading is 2 bands lower. Between certificates, wall efficiency dropped from Very Good to Average and roof efficiency dropped from Good to Poor. The recommended improvements would push it to C (score 78).

On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2018–2018, sale prices on this property compounded at -50% per year. On a £-per-square-foot basis, the last sale (£353/sq ft) was about 38.2% above the typical sold price in the postcode. On the market in February 2018 and unlisted since — roughly 8 years.