17 Colne Avenue, Mill End, Rickmansworth, WD3 8BS

17 Colne Avenue is a four-bedroom semi-detached house in Mill End, Rickmansworth, Rickmansworth (WD3 8BS). It has a recorded floor area of 137 m² (around 1471 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (April 2009) shows an E (score 46), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 60). The latest certificate is from April 2009, so improvements made since then won't be reflected.

Held since November 2009 — that's 17 years off the open market, well above the local norm. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 137 m² the property is well over the postcode median (90 m² across 19 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 84% of similar EPCs). Across 1996–2009, sale prices on this property compounded at 11.6% per year. Today's modelled estimate of £546,000 sits 60.6% above the 2009 sale of £340,000. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include a loft conversion, meaningful when judging how the property has evolved.