28a, John Street, Swindon, SN1 1RT
About 28a
28a is a semi-detached house in Swindon (SN1 1RT). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (March 2019) shows a D (score 60), on the cusp of jumping into the C band. When first surveyed in January 2009 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Very Good, hot-water efficiency went from Very Poor to Very Good and main heating went from Poor to Good. The recommended improvements would push it to C (score 72).
Across 2017–2022, sale prices on this property compounded at 1.7% per year. Today's modelled estimate of £139,000 is 54.4% below the 2022 sale of £305,000, an unusual pattern given regional price growth and worth checking against the EPC condition. Most recent transfer: June 2022 at £305,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Energy performance
EPC Rating
Certificate validity
Valid until 26 March 2029
Property Improvements
Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Loft insulation installed or upgraded to 250mm+
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
28a has no planning applications on record.
But the area is active
13 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£139,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.7% per year over 5 years.
£305,000
Growth on file: 1.7% per year over 5 years.
Sales timeline
16 June 2022Most recent
£305,000
+8.9%over 5 years5 June 2017
£280,000
Versus other John Street homes
28a outperforms the street on epc rating by a wide margin.
EPC Rating
60 (D)
Street avg 53 (E)
Floor Area
41 m²
Street avg 45 m²
CO₂ Emissions
2.6 t/year
Street avg 0.6 t/year
Habitable Rooms
3 rooms
Street avg 2 rooms
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
380/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Fleming Way — bus stop.
Closest school
0.6 km
UTC Swindon. 33 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
51.0dB

Night-time· 23:00 – 07:00
38.9dB







