4 Siddons House, Cottage Close, Harrow, HA2 0HG

4 Siddons House is a one-bedroom semi-detached house in Harrow (HA2 0HG). It has a recorded floor area of 60 m² (around 646 sq ft), construction records dating it to 1900-1929 and council tax band E. At 60 m² this is the smallest unit on EPC record across the building (60–107 m²). The building's EPC ratings span D to C, with this unit at the top. The property has an EV charger on record, all of which lower running costs and tend to lift resale appeal. The latest certificate (September 2020) shows a C (score 71). Earlier certificates rated it B (July 2009); the latest reading is one band lower. Between certificates, lighting went from Poor to Good; while wall efficiency dropped from Good to Poor and window efficiency dropped from Good to Poor.

Across 2005–2022, sale prices on this property compounded at 1.2% per year. On a £-per-square-foot basis, the last sale (£472/sq ft) was about 18.3% above the typical sold price in the postcode. At 60 m² it's 18.8% smaller than the typical home in the postcode (74 m² median across 40 EPCs). Last sale on file: £305,000 in July 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.