21 Leaze Street, Swindon, SN1 7BJ
About 21 Leaze Street
21 Leaze Street is a semi-detached house in Swindon (SN1 7BJ). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 2007-2011 and council tax band D. The latest certificate (August 2024) shows a C (score 78), near the top of the C band. Earlier certificates rated it B (June 2010); the latest reading is one band lower. Between certificates, lighting went from Average to Very Good; while window efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 88).
At 109 m² it's 27.5% larger than the typical home in the postcode (86 m² median across 26 EPCs). Across 2019–2024, sale prices on this property compounded at 2.6% per year. On a £-per-square-foot basis, the last sale (£264/sq ft) was about 19.3% above the typical sold price in the postcode. Most recent transfer: September 2024 at £310,000.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency decreased
Wall insulation upgraded
More low energy lighting installed
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Planning history
21 Leaze Street has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
21 Leaze Street saw 3 transfers in just over a decade — high turnover for the postcode.
£326,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.6% per year over 5 years.
£310,000
Growth on file: 2.6% per year over 5 years.
Sales timeline
12 September 2024Most recent
£310,000
+21.6%over 4 years26 September 2019
£255,000
-5.6%2 May 2019
£270,000
Median price across the last 5 sales in SN1 7BJ: £267,500 (2025–2023).
Versus other Leaze Street homes
21 Leaze Street is notably below the street on co₂ emissions.
Price per m²
£2,844
Street avg £2,914
Floor Area
109 m²
Street avg 91 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
2.5 t/year
Street avg 2.0 t/year
Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
7/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Rylane — bus stop.
Closest school
0.2 km
East Wichel Primary School & Nursery. 19 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
56.0dB

Night-time· 23:00 – 07:00
46.9dB







