17 Colts Road, Rownhams, Southampton, SO16 8JX

17 Colts Road is a four-bedroom detached house in Rownhams, Southampton, Southampton (SO16 8JX). It has a recorded floor area of 112 m² (around 1206 sq ft), construction records dating it to 1983-1990 and council tax band E. The latest certificate (December 2015) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it D (November 2008); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good; while wall efficiency dropped from Good to Poor and roof efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 85), a 3-band jump. The latest certificate is from December 2015, so improvements made since then won't be reflected.

It hasn't traded since December 2009, a hold of 16 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 112 m² it's 24.4% larger than the typical home in the postcode (90 m² median across 7 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2000–2009, sale prices on this property compounded at 4% per year. Today's modelled estimate of £446,000 sits 71.5% above the 2009 sale of £260,000. On a £-per-square-foot basis, the last sale (£216/sq ft) was about 29.1% below the postcode norm.