20a, Edgington Road, Lambeth, London, SW16 5BS

20a is a one-bedroom mid-terrace house in Lambeth, London, London (SW16 5BS). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 1900-1929 and council tax band B. At 46 m² this is the 20th smallest of 50 units on EPC record in the building, where floor areas span 31–139 m². The building's EPC ratings span D to C, with this unit at the bottom. The latest certificate (November 2008) shows a D (score 65), on the cusp of jumping into the C band. The latest certificate is from November 2008, so improvements made since then won't be reflected.

It hasn't traded since October 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2001–2007, sale prices on this property compounded at 12.4% per year. Today's modelled estimate of £349,000 sits 64.6% above the 2007 sale of £212,000. On a £-per-square-foot basis, the last sale (£428/sq ft) was about 22.9% above the typical sold price in the postcode.