90a, Plumstead High Street, Greenwich, London, SE18 1SL

90a is a mid-terrace house in Greenwich, London, London (SE18 1SL). It has a recorded floor area of 80 m² (around 861 sq ft) and construction records dating it to 1900-1929. The latest certificate (November 2025) shows a D (score 60), on the cusp of jumping into the C band. When first surveyed in February 2009 the rating was F, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 75). At 80 m² this is the 12th smallest of 15 units on EPC record in the building, where floor areas span 33–144 m². The building's EPC ratings span F to C across 15 units on file.

Today's modelled estimate of £331,000 is 22.1% below the 2025 sale of £425,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£494/sq ft) was about 145.7% above the typical sold price in the postcode. A recent sale: £425,000 in June 2025. At 80 m² it's 23.1% larger than the typical home in the postcode (65 m² median across 14 EPCs).