18 Avebury House, Bentham Close, Westlea, Swindon, SN5 7FS

18 Avebury House is a one-bedroom semi-detached house in Westlea, Swindon, Swindon (SN5 7FS). It has a recorded floor area of 35 m² (around 377 sq ft), construction records dating it to 2012 onwards and council tax band A. At 35 m² this is the 2nd smallest of 21 units on EPC record in the building, where floor areas span 34–66 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (June 2026) shows a C (score 69), just inside the C band. When first surveyed in November 2015 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Poor and main heating went from Very Poor to Average; while roof efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Poor. Main heating runs on electricity. This certificate was lodged in the last six months, so the rating reflects current condition.

At 35 m² it sits well below the postcode median (55 m² across 20 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 85% of similar EPCs). Today's modelled estimate of £139,000 is 12.1% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£329/sq ft) was about 45.7% above the typical sold price in the postcode. 11 years since the last transfer (February 2016).