20 Petersfield Mansions, Petersfield, Cambridge, CB1 1BB

20 Petersfield Mansions is a two-bedroom semi-detached house in Cambridge (CB1 1BB). It has a recorded floor area of 67 m² (around 726 sq ft), construction records dating it to 1991-1995 and council tax band E. At 67 m² this is the 52nd smallest of 65 units on EPC record in the building, where floor areas span 38–185 m². The building's EPC ratings span E to B across 65 units on file. The latest certificate (August 2010) shows a D (score 56), a step below the typical UK home. Main heating runs on electricity. The latest certificate is from August 2010, so improvements made since then won't be reflected.

Held since February 2011 — that's 15 years off the open market, well above the local norm. Across the public record there are 5 sales, relatively high churn for a single property. Across 1996–2011, sale prices on this property compounded at 6.3% per year. Today's modelled estimate of £447,000 sits 65.6% above the 2011 sale of £270,000. On a £-per-square-foot basis, the last sale (£372/sq ft) was about 61.1% above the typical sold price in the postcode. At 67 m² it's 17.4% larger than the typical home in the postcode (57 m² median across 68 EPCs).