Flat 3, 25 Well Walk, London, NW3 1BY

Flat 3 is a two-bedroom semi-detached house in London (NW3 1BY). It has a recorded floor area of 83 m² (around 893 sq ft), construction records dating it to before 1900 and council tax band F. At 83 m² this is the smallest unit on EPC record across the building (83–137 m²). The building's EPC ratings span E to D, with this unit at the top. On EPC score it ranks first in the building (66 versus a worst of 53). Period features are noted in the property record. The latest certificate (May 2021) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since June 2011. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Good to Very Good. The recommended improvements would push it to C (score 80).

It hasn't traded since June 2005, a hold of 21 years that's notably long for the area. Across 1996–2005, sale prices on this property compounded at 12.3% per year. Today's modelled estimate of £1,047,000 sits 82.1% above the 2005 sale of £575,000. On a £-per-square-foot basis, the last sale (£644/sq ft) was about 27.3% below the postcode norm. At 83 m² it sits well below the postcode median (137 m² across 15 EPCs), making it one of the more compact homes locally.