23 Granville Road, Watford, WD18 0AH

23 Granville Road is a mid-terrace house in Watford (WD18 0AH). It has a recorded floor area of 49 m² (around 532 sq ft), construction records dating it to 1983-1990 and council tax band B. At 49 m² this is the 15th smallest of 35 units on EPC record in the building, where floor areas span 15–336 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (79 versus a worst of 43). The latest certificate (August 2009) shows a C (score 79), near the top of the C band. The rating has held steady at C across 2 certificates since May 2009. Between certificates, wall efficiency went from Very Poor to Good, hot-water efficiency went from Good to Very Good and main heating went from Good to Very Good; while window efficiency dropped from Average to Poor and lighting dropped from Very Good to Good. The latest certificate is from August 2009, so improvements made since then won't be reflected.

At 49 m² it sits well below the postcode median (91 m² across 34 EPCs), making it one of the more compact homes locally. Across 2003–2015, sale prices on this property compounded at 5.1% per year. On a £-per-square-foot basis, the last sale (£460/sq ft) was about 204.7% above the typical sold price in the postcode. On the market in December 2015 and unlisted since — roughly 10 years. 2 planning records sit against the property, 0 approved, 1 refused.