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 19.1% above the typical sold price in the postcode. Most recent transfer: September 2024 at £310,000.
Energy performance
EPC Rating
Certificate validity
Valid until 20 August 2034
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water efficiency decreased
Wall insulation upgraded
More low energy lighting installed
Get a survey for this property
Level 2 HomeBuyer Report
We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.
From £595 · Includes VAT
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.
£327,000
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: £262,500 (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 £2,924
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
Crime
380/mo
Steady 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







