Flat 3, 1 Colnbrook Street, Southwark, London, SE1 6EZ

Flat 3 is an end-of-terrace house in Southwark, London, London (SE1 6EZ). It has a recorded floor area of 55 m² (around 592 sq ft), construction records dating it to 1991-1995 and council tax band D. At 55 m² this is the 2nd smallest of 6 units on EPC record in the building, where floor areas span 48–124 m². The building's EPC ratings span E to D, with this unit at the bottom. The latest certificate (July 2019) shows an E (score 51), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since January 2017. Between certificates, wall efficiency went from Poor to Good and lighting went from Good to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Very Poor. The recommended improvements would lift it to C (score 73), a 2-band jump. Main heating runs on electricity.

At 55 m² it sits well below the postcode median (112 m² across 17 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 76% of similar EPCs). Across 2010–2021, sale prices on this property compounded at 5.8% per year. On a £-per-square-foot basis, the last sale (£971/sq ft) was about 18.6% above the typical sold price in the postcode. Most recent transfer: April 2021 at £575,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.