Flat 4, 21 Horsham Road, Swindon, SN3 2FL

Flat 4 is a mid-terrace house in Swindon (SN3 2FL). It has a recorded floor area of 62 m² (around 667 sq ft), construction records dating it to 2007-2011 and council tax band B. The latest certificate (January 2021) returns a high B (score 85), putting the home a stone's throw from an A rating. The rating has held steady at B across 2 certificates since March 2010. Between certificates, hot-water efficiency went from Poor to Average, lighting went from Average to Very Good and main heating went from Poor to Average. Main heating runs on electricity. At 62 m² this is the 3rd smallest of 8 units on EPC record in the building, where floor areas span 47–67 m². The building's EPC ratings span C to B, with this unit at the top. On EPC score it ranks first in the building (85 versus a worst of 73).

On energy efficiency it sits in the top 10% of properties in this postcode. Across 2009–2016, sale prices on this property compounded at 5.1% per year. Today's modelled estimate of £127,000 is 15.5% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£165/sq ft) was about 24.3% above the typical sold price in the postcode. 10 years since the last transfer (March 2016).