13a, Clarendon Road, Croydon, CR0 3SJ

13a is a semi-detached house in Croydon (CR0 3SJ). It has a recorded floor area of 45 m² (around 484 sq ft) and construction records dating it to 1900-1929. At 45 m² this is the smallest unit on EPC record across the building (45–132 m²). The building's EPC ratings span F to C across 35 units on file. The latest certificate (November 2020) shows a D (score 62), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since August 2010. Between certificates, window efficiency went from Poor to Average and lighting went from Good to Very Good. The recommended improvements would push it to C (score 76).

It hasn't traded since April 2003, a hold of 23 years that's notably long for the area. At 45 m² it sits well below the postcode median (93 m² across 34 EPCs), making it one of the more compact homes locally. Across 2003–2003, sale prices on this property compounded at 19% per year. Today's modelled estimate of £317,000 is 44.1% above the 2003 sale price. On a £-per-square-foot basis, the last sale (£454/sq ft) was about 102.1% above the typical sold price in the postcode.