4 King William Street, Swindon, SN1 3LB

4 King William Street is a two-bedroom mid-terrace house in Swindon (SN1 3LB). It has a recorded floor area of 81 m² (around 872 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (September 2020) shows a D (score 58), a step below the typical UK home. When first surveyed in August 2010 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good and lighting went from Average to Very Good; while wall efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 82), a 2-band jump.

Held since July 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. One planning application is currently pending a decision in 2026. The record references conservation-area consent, which constrain future alterations. Today's modelled estimate of £204,000 sits 292.3% above the 1998 sale of £52,000. On a £-per-square-foot basis, the last sale (£60/sq ft) was about 58.1% below the postcode norm.