9 King John Street, Swindon, SN1 3DB
About 9 King John Street
9 King John Street is a mid-terrace house in Swindon (SN1 3DB). It has a recorded floor area of 63 m² (around 678 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (October 2025) shows a C (score 71). When first surveyed in September 2013 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Good and lighting went from Poor to Very Good.
One planning record on file: an extension approved in 2015. Past consents include an extension, meaningful when judging how the property has evolved. Its energy rating outperforms most of the postcode (better than 83% of similar EPCs). Across 1997–2018, sale prices on this property compounded at 6.4% per year. Today's modelled estimate of £204,000 is 23.6% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£243/sq ft) was about 40.5% above the typical sold price in the postcode. Most recent transfer: August 2018 at £165,000.
Everything you need to know about 9 King John Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Wall insulation improved
Roof insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
9 King John Street has an approved single-storey rear extension on the planning record.
1 application on record at 9 King John Street, Swindon, SN1 3DB
- Oct 2015ExtensionFullOutcome in report
Extension: Single storey · Rear of property
Erection of a single storey rear extension.
- Documents
- 12 docs on file
- Reference
- S/15/1405
Unlock 9 King John Street, Swindon, SN1 3DB's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 31 notable nearby
- The 12 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Sale price has grown by over 3x since 1997.
£204,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.4% per year over 21 years.
£165,000
Growth on file: 6.4% per year over 21 years.
Sales timeline
22 August 2018Most recent
£165,000
+32.0%over 4 years17 July 2014
£125,000
+177.8%over 16 years28 August 1997
£45,000
Median price across the last 5 sales in SN1 3DB: £210,000 (2024–2020).
Nearby sales in SN1 3DB
Versus other King John Street homes
9 King John Street outperforms the street on epc rating by a wide margin.
Price per m²
£2,619
Street avg £2,758
Floor Area
63 m²
Street avg 64 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
2.1 t/year
Street avg 3.7 t/year
Everything you need to know about 9 King John Street
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee

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
Prospect Place — bus stop.
Closest school
0.2 km
King William Street Church of England Primary School. 29 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
51.6dB

Night-time· 23:00 – 07:00
41.3dB






