12a, London Street, Swindon, SN1 5DG
About 12a
12a is a mid-terrace house in Swindon (SN1 5DG). It has a recorded floor area of 88 m² (around 947 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (May 2013) shows an E (score 44), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 82), a 3-band jump. The latest certificate is from May 2013, so improvements made since then won't be reflected.
One planning application is currently pending a decision in 2026. At 88 m² it's 20.5% larger than the typical home in the postcode (73 m² median across 23 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 87% of similar EPCs).
Everything you need to know about 12a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
12a's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 May 2023
EPC Rating
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Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
There is a planning application currently awaiting a decision.
1 application on record at 12a, London Street, Swindon, SN1 5DG
1 live now- Mar 2026HeritageOutcome in report
The works consist of the erection of essential internal gas pipework to properties 7a ,8 ,9 ,9a ,10 ,10a ,11 ,11a,12 and 12a of London Street, and 6 East Street
- Documents
- 23 docs on file
- Reference
- S/LBC/26/0412
Unlock 12a, London Street, Swindon, SN1 5DG's full planning history
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- Every decision — granted, refused or withdrawn
- All 1 application on this property in full, plus 15 notable nearby
- The 23 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
12a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£186,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in SN1 5DG: £136,000 (2023–2002).
Versus other London Street homes
On epc rating, 12a runs well behind the street norm.
EPC Rating
44 (E)
Street avg 62 (D)
Floor Area
88 m²
Street avg 76 m²
CO₂ Emissions
6.0 t/year
Street avg 3.7 t/year
Habitable Rooms
4 rooms
Street avg 3 rooms
Everything you need to know about 12a
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
7/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Emlyn Square — bus stop.
Closest school
0.3 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
50.6dB
Night-time· 23:00 – 07:00
40.1dB