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

15 Guernsey House is a one-bedroom mid-terrace house in Watford (WD18 6ST). It has a recorded floor area of 38 m² (around 409 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (March 2023) shows a C (score 72). The rating has held steady at C across 4 certificates since October 2008. Between certificates, window efficiency went from Very Poor to Good, hot-water efficiency went from Poor to Average and main heating went from Poor to Average. Main heating runs on electricity. At 38 m² this is the 11th 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 across 32 units on file.

On the market in December 2014 and unlisted since — roughly 11 years. Across the public record there are 6 sales, relatively high churn for a single property. Across 1997–2014, sale prices on this property compounded at 6.8% per year. Today's modelled estimate of £201,000 is 27.2% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£386/sq ft) was about 106.2% above the typical sold price in the postcode.