291a, High Street, Slough, SL1 1BD

291a is a four-bedroom detached house in Slough (SL1 1BD). It has a recorded floor area of 91 m² (around 981 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (December 2008) shows an F (score 28), near the bottom of the EPC scale. The recommended improvements would push it to E (score 40). Main heating runs on electricity. The latest certificate is from December 2008, so improvements made since then won't be reflected. At 91 m² this is the 30th smallest of 34 units on EPC record in the building, where floor areas span 21–95 m². The building's EPC ratings span G to C across 34 units on file.

Held since July 2002 — that's 24 years off the open market, well above the local norm. One planning application is currently pending a decision in 2019. At 91 m² the property is well over the postcode median (50 m² across 33 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1999–2002, sale prices on this property compounded at 10.2% per year. Today's modelled estimate of £233,000 sits 172.5% above the 2002 sale of £85,500. On a £-per-square-foot basis, the last sale (£87/sq ft) was about 84% below the postcode norm.