Flat 1, 173 High Street, Rickmansworth, WD3 1AY

Flat 1 is a mid-terrace house in Rickmansworth (WD3 1AY). It has a recorded floor area of 120 m² (around 1292 sq ft) and construction records dating it to 1930-1949. At 120 m² this is the largest unit on EPC record across the building (43–120 m²). The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (59 versus a best of 73). The latest certificate (December 2024) shows a D (score 59), a step below the typical UK home. Earlier certificates rated it C (December 2015); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Poor and hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 83), a 2-band jump. Main heating runs on electricity.

At 120 m² the property is well over the postcode median (54 m² across 15 EPCs), placing it in the larger end of the local stock. It changed hands recently, sold February 2025 for £355,000. Across 2022–2025, sale prices on this property compounded at 3% per year. Today's modelled estimate of £423,000 is 19.2% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£275/sq ft) was about 32.6% below the postcode norm.