23 Colbert Park, Swindon, SN25 4YJ

23 Colbert Park is a detached house in Swindon (SN25 4YJ). It has a recorded floor area of 139 m² (around 1496 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (August 2016) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 79).

Held since April 1998 — that's 28 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £508,000 sits 293.8% above the 1998 sale of £128,995. On a £-per-square-foot basis, the last sale (£86/sq ft) was about 35.6% below the postcode norm. At 139 m² it's 15.8% larger than the typical home in the postcode (120 m² median across 17 EPCs).