15 Castle Avenue, Highcliffe, Christchurch, BH23 4LL

15 Castle Avenue is a semi-detached house in Highcliffe, Christchurch, Christchurch (BH23 4LL). It has a recorded floor area of 123 m² (around 1324 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (April 2022) returns a high B (score 85), putting the home a stone's throw from an A rating. When first surveyed in March 2009 the rating was C, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.

It hasn't traded since May 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 123 m² the property is well over the postcode median (88 m² across 21 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. Across 1998–2009, sale prices on this property compounded at 10.6% per year. Today's modelled estimate of £458,000 sits 83.2% above the 2009 sale of £250,000. On a £-per-square-foot basis, the last sale (£189/sq ft) was about 22.4% below the postcode norm.