21 Colbourne Street, Swindon, SN1 2EQ

21 Colbourne Street is a four-bedroom mid-terrace house in Swindon (SN1 2EQ). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (July 2026) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in May 2009 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Average and lighting went from Poor to Very Good; while wall efficiency dropped from Poor to Very Poor and window efficiency dropped from Good to Poor. The recommended improvements would lift it to B (score 84), a 2-band jump. This certificate was lodged in the last six months, so the rating reflects current condition.

Held since November 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. Across 1998–2009, sale prices on this property compounded at 7.7% per year. Today's modelled estimate of £244,000 sits 87.7% above the 2009 sale of £130,000. 4 bedrooms is on the larger side for this postcode, where 2 is the typical count.