452a, St Albans Road, Watford, WD24 6PJ

452a is a one-bedroom end-of-terrace house in Watford (WD24 6PJ). It has a recorded floor area of 50 m² (around 538 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (February 2019) shows an E (score 43), well below the UK norm with real room to improve. Earlier certificates rated it D (November 2008); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while roof efficiency dropped from Average to Very Poor and hot-water efficiency dropped from Good to Average. The recommended improvements would push it to D (score 59). At 50 m² this is the 16th smallest of 40 units on EPC record in the building, where floor areas span 30–156 m². The building's EPC ratings span F to C across 40 units on file.

Untraded for 26 years, with the last transfer in December 2000. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £325,000 sits 109.7% above the 2000 sale of £155,000. On a £-per-square-foot basis, the last sale (£288/sq ft) was about 39.7% above the typical sold price in the postcode. At 50 m² it's 26.5% smaller than the typical home in the postcode (68 m² median across 39 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.