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

12 Avebury House is a one-bedroom semi-detached house in Westlea, Swindon, Swindon (SN5 7FS). It has a recorded floor area of 36 m² (around 388 sq ft), construction records dating it to 2012-2021 and council tax band A. At 36 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. On EPC score it ranks first in the building (79 versus a worst of 54). The latest certificate (October 2025) shows a C (score 79), near the top of the C band. When first surveyed in November 2015 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Very Poor to Poor; while roof efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Poor. The recommended improvements would push it to B (score 86). Main heating runs on electricity.

At 36 m² it sits well below the postcode median (55 m² across 20 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the top 10% of properties in this postcode. On a £-per-square-foot basis, the last sale (£297/sq ft) was about 30.5% above the typical sold price in the postcode. Last changed hands 10 years ago, in March 2016.