15 Grantham Close, Freshbrook, Swindon, SN5 8NZ

15 Grantham Close is an end-of-terrace house in Freshbrook, Swindon, Swindon (SN5 8NZ). It has a recorded floor area of 135 m² (around 1453 sq ft), construction records dating it to 1983-1990 and council tax band B. The latest certificate (November 2017) shows a C (score 74). When first surveyed in July 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Average to Good, roof efficiency went from Average to Good and hot-water efficiency went from Average to Good. The recommended improvements would push it to B (score 83).

Held since September 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 135 m² the property is well over the postcode median (68 m² across 28 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £311,000 sits 81.9% above the 2009 sale of £171,000. On a £-per-square-foot basis, the last sale (£118/sq ft) was about 25.3% below the postcode norm.