20a, Dover Street, Swindon, SN1 3JP
About 20a
20a is an end-of-terrace house in Swindon (SN1 3JP). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (March 2019) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since September 2011. Between certificates, window efficiency went from Poor to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Average to Poor. The recommended improvements would lift it to B (score 85), a 2-band jump.
One planning record on file: a garage conversion approved in 2003. Past consents include a garage conversion, meaningful when judging how the property has evolved. Across 1996–2024, sale prices on this property compounded at 5.3% per year. Today's modelled estimate of £180,000 is 20% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£218/sq ft) was about 42% above the typical sold price in the postcode. At 64 m² it's 15.2% smaller than the typical home in the postcode (76 m² median across 38 EPCs). Most recent transfer: August 2024 at £150,000.
Everything you need to know about 20a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Windows upgraded, improving insulation
Loft insulation upgraded to recommended levels
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 £820 · Includes VAT
Planning history
1 application on record at 20a, Dover Street, Swindon, SN1 3JP
- Jan 2003Garage ConversionFullOutcome in report
Proposed garage conversion to incoporate lounge.
- Reference
- S/02/3416
Unlock 20a, Dover Street, Swindon, SN1 3JP's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 31 notable nearby
- What the pattern means for extending or converting here
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Sales history & valuation
20a has more than quadrupled in price since its earliest registered sale in 1996.
£180,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.3% per year over 28 years.
£150,000
Growth on file: 5.3% per year over 28 years.
Sales timeline
7 August 2024Most recent
£150,000
+42.9%over 11 years25 October 2012
£105,000
+38.2%over 10 years31 October 2001
£76,000
+20.2%over 1 year10 December 1999
£63,250
+30.4%over 1 year3 December 1998
£48,500
+40.6%over 2 years9 May 1996
£34,500
Median price across the last 5 sales in SN1 3JP: £220,000 (2025–2023).
Versus other Dover Street homes
On floor area, 20a runs well behind the street norm.
Price per m²
£2,344
Street avg £2,073
Floor Area
64 m²
Street avg 84 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
3.1 t/year
Street avg 3.8 t/year
Everything you need to know about 20a
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
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
0.2 km
Cannon Street — 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
52.5dB

Night-time· 23:00 – 07:00
41.2dB






