25a, Cromwell Grove, Hammersmith And Fulham, London, W6 7RQ

25a is a one-bedroom detached house in Hammersmith And Fulham, London, London (W6 7RQ). It has a recorded floor area of 50 m² (around 538 sq ft) and construction records dating it to 1950-1966. The latest certificate (March 2016) 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 December 2014. Between certificates, wall efficiency dropped from Poor to Very Poor and lighting dropped from Very Good to Good. The recommended improvements would push it to C (score 75). The latest certificate is from March 2016, so improvements made since then won't be reflected. At 50 m² this is the 2nd smallest of 17 units on EPC record in the building, where floor areas span 49–290 m². The building's EPC ratings span G to B across 17 units on file.

At 50 m² it sits well below the postcode median (81 m² across 27 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £431,000 is 14.9% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£697/sq ft) was about 90.9% above the typical sold price in the postcode. Most recent transfer: June 2021 at £375,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.