18a, The Danes, Goat Lane, Basingstoke, RG21 7PQ

18a is a semi-detached house in Basingstoke (RG21 7PQ). It has a recorded floor area of 36 m² (around 388 sq ft), construction records dating it to 1967-1975 and council tax band A. The latest certificate (March 2014) shows a D (score 67), on the cusp of jumping into the C band. Earlier certificates rated it C (May 2010); the latest reading is one band lower. Between certificates, window efficiency went from Very Poor to Average; while lighting dropped from Average to Very Poor. The recommended improvements would push it to C (score 77). The latest certificate is from March 2014, so improvements made since then won't be reflected. At 36 m² this is the 29th smallest of 54 units on EPC record in the building, where floor areas span 15–78 m². The building's EPC ratings span E to C across 54 units on file.

Last sold in April 2016, so it's been off the market for around 10 years. Across the public record there are 4 sales, relatively high churn for a single property. Across 1995–2016, sale prices on this property compounded at 6.2% per year. Today's modelled estimate of £122,000 is 15.1% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£274/sq ft) was about 38.2% above the typical sold price in the postcode.