73c, Addison Road, Guildford, GU1 3QQ

73c is a semi-detached house in Guildford (GU1 3QQ). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (December 2018) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2008. Between certificates, hot-water efficiency went from Average to Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would push it to C (score 75). At 40 m² this is the 2nd smallest of 36 units on EPC record in the building, where floor areas span 39–121 m². The building's EPC ratings span F to C across 36 units on file.

Untraded for 18 years, with the last transfer in April 2008. Across the public record there are 4 sales, relatively high churn for a single property. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 40 m² it sits well below the postcode median (94 m² across 35 EPCs), making it one of the more compact homes locally. Across 1997–2008, sale prices on this property compounded at 11.8% per year. Today's modelled estimate of £262,000 is 39.4% above the 2008 sale price. On a £-per-square-foot basis, the last sale (£437/sq ft) was about 16.4% above the typical sold price in the postcode.