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

27 Guernsey House is a one-bedroom detached house in Watford (WD18 6ST). It has a recorded floor area of 38 m² (around 407 sq ft) and council tax band C. At 38 m² this is the 10th 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. The latest certificate (November 2009) shows a D (score 66), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 70). Main heating runs on electricity. The latest certificate is from November 2009, so improvements made since then won't be reflected.

Held since April 2007 — that's 19 years off the open market, well above the local norm. Across the public record there are 6 sales, relatively high churn for a single property. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. It lags the bulk of the postcode on energy efficiency (less efficient than 81% of similar EPCs). Across 1997–2007, sale prices on this property compounded at 12% per year. Today's modelled estimate of £201,000 is 38.1% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£357/sq ft) was about 83.5% above the typical sold price in the postcode.