19 Guernsey House, Pioneer Way, Watford, WD18 6ST

19 Guernsey House is a one-bedroom mid-terrace house in Watford (WD18 6ST). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (March 2021) returns a B (score 81), comfortably above the UK average. When first surveyed in April 2009 the rating was C, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Average and main heating went from Poor to Average; while window efficiency dropped from Good to Average. Main heating runs on electricity. At 44 m² this is the 26th smallest of 32 units on EPC record in the building, where floor areas span 29–62 m². The building's EPC ratings span E to B, with this unit at the top.

Held since February 2000 — that's 26 years off the open market, well above the local norm. On energy efficiency it sits in the top 10% of properties in this postcode. Across 1997–2000, sale prices on this property compounded at 16.8% per year. Today's modelled estimate of £206,000 sits 184.1% above the 2000 sale of £72,500. On a £-per-square-foot basis, the last sale (£153/sq ft) was about 22.6% below the postcode norm.