15 Arran House, Pioneer Way, Watford, WD18 6SU

15 Arran House is an end-of-terrace house in Watford (WD18 6SU). It has a recorded floor area of 29 m² (around 312 sq ft), construction records dating it to 1991-1995 and council tax band B. At 29 m² this is the smallest unit on EPC record across the building (29–62 m²). The building's EPC ratings span D to B across 18 units on file. The latest certificate (March 2021) shows a C (score 79), near the top of the C band. The rating has held steady at C across 2 certificates since April 2010. Between certificates, window efficiency went from Very Poor to Good, lighting went from Good to Very Good and main heating went from Poor to Average. The recommended improvements would push it to B (score 81). Main heating runs on electricity.

Held since June 2006 — that's 20 years off the open market, well above the local norm. Across the public record there are 4 sales, relatively high churn for a single property. Across 1996–2006, sale prices on this property compounded at 12% per year. Today's modelled estimate of £151,000 is 38.5% above the 2006 sale price. On a £-per-square-foot basis, the last sale (£349/sq ft) was about 89.6% above the typical sold price in the postcode. At 29 m² it's 23.7% smaller than the typical home in the postcode (38 m² median across 17 EPCs).