143a, Greenwich South Street, Greenwich, London, SE10 8NX

143a is a two-bedroom end-of-terrace house in Greenwich, London, London (SE10 8NX). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1900-1929 and council tax band B. At 71 m² this is the 7th smallest of 15 units on EPC record in the building, where floor areas span 31–166 m². The building's EPC ratings span E to C, with this unit at the bottom. On EPC score it ranks last in the building (42 versus a best of 78). The latest certificate (January 2020) shows an E (score 42), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since February 2010. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Good to Average. The recommended improvements would push it to D (score 58).

Held since September 2001 — that's 25 years off the open market, well above the local norm. Sale prices here have outpaced London HPI: 200% per year against 0% for the wider region. Today's modelled estimate of £405,000 sits 157.1% above the 2001 sale of £157,500. On a £-per-square-foot basis, the last sale (£206/sq ft) was about 67.5% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 79% of similar EPCs).