3c, Chertsey Lane, Staines Upon Thames, TW18 3JH

3c is a two-bedroom semi-detached house in Staines Upon Thames (TW18 3JH). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1930-1949 and council tax band C. Tenure is freehold. At 61 m² this is the 3rd smallest of 10 units on EPC record in the building, where floor areas span 56–138 m². The building's EPC ratings span E to C, with this unit at the bottom. Other recorded features include a conservatory. The latest certificate (January 2015) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it D (September 2009); the latest reading is one band lower. Between certificates, hot-water efficiency dropped from Good to Average and lighting dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 75), a 2-band jump. The latest certificate is from January 2015, so improvements made since then won't be reflected.

At 61 m² it sits well below the postcode median (114 m² across 9 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 78% of similar EPCs). Across 2001–2017, sale prices on this property compounded at 5.7% per year. Today's modelled estimate of £342,000 is 14% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£457/sq ft) was about 30.1% above the typical sold price in the postcode. Last sold in January 2017, so it's been off the market for around 9 years.