18a, Brook Close, Exeter, EX1 3JL

18a is a one-bedroom detached house in Exeter (EX1 3JL). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1950-1966 and council tax band A. At 41 m² this is the smallest unit on EPC record across the building (41–96 m²). The building's EPC ratings span E to C across 29 units on file. The latest certificate (February 2021) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2009. Between certificates, lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Average.

It hasn't traded since June 2007, a hold of 19 years that's notably long for the area. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 41 m² it sits well below the postcode median (62 m² across 28 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count. Across 2000–2007, sale prices on this property compounded at 43.8% per year. Today's modelled estimate of £136,000 is 18.8% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£259/sq ft) was about 36.3% above the typical sold price in the postcode.