311a, High Street, Slough, SL1 1BD

311a is a mid-terrace house in Slough (SL1 1BD). It has a recorded floor area of 65 m² (around 700 sq ft), construction records dating it to 1900-1929 and council tax band B. At 65 m² this is the 26th 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, with this unit at the top. The latest certificate (June 2025) shows a C (score 73). When first surveyed in December 2014 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Good, roof efficiency went from Very Poor to Average and window efficiency went from Very Poor to Good. The recommended improvements would push it to B (score 81). Main heating runs on electricity.

Held since November 2004 — that's 22 years off the open market, well above the local norm. At 65 m² the property is well over the postcode median (50 m² across 33 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). Today's modelled estimate of £313,000 is 33.2% above the 2004 sale price. On a £-per-square-foot basis, the last sale (£336/sq ft) was about 37.1% below the postcode norm.