7c, Hollycroft Avenue, London, NW3 7QG

7c is a detached house in London (NW3 7QG). It has a recorded floor area of 82 m² (around 878 sq ft) and construction records dating it to 1967-1975. At 82 m² this is the 3rd smallest of 6 units on EPC record in the building, where floor areas span 56–104 m². On EPC score it ranks last in the building (55 versus a best of 67). The latest certificate (November 2008) shows a D (score 55), a step below the typical UK home. The latest certificate is from November 2008, so improvements made since then won't be reflected.

Held since May 2009 — that's 17 years off the open market, well above the local norm. Across the public record there are 4 sales, relatively high churn for a single property. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 82 m² it's 17.4% smaller than the typical home in the postcode (99 m² median across 10 EPCs). Across 1999–2009, sale prices on this property compounded at 12.8% per year. Today's modelled estimate of £706,000 is 41.2% above the 2009 sale price.