20a, Dowling Street, Swindon, SN1 5QY
About 20a
20a is an end-of-terrace house in Swindon (SN1 5QY). It has a recorded floor area of 44 m² (around 474 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (December 2018) shows a D (score 68), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2008); the latest reading is one band lower. Between certificates, hot-water efficiency went from Good to Very Good and lighting went from Good to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 73).
At 44 m² it sits well below the postcode median (75 m² across 29 EPCs), making it one of the more compact homes locally. Last sold in April 2015, so it's been off the market for around 11 years. Across the public record there are 4 sales, relatively high churn for a single property. Across 1997–2015, sale prices on this property compounded at 5.9% per year. Today's modelled estimate of £156,000 is 30% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£253/sq ft) was about 78.4% above the typical sold price in the postcode.
Energy performance
EPC Rating
Certificate validity
Valid until 5 December 2028
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
More low energy lighting installed
Get a survey for this property
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
20a has no planning applications on record.
But the area is active
15 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
20a has more than doubled in price since the earliest registered sale in 1997.
£156,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.9% per year over 18 years.
£120,000
Growth on file: 5.9% per year over 18 years.
Sales timeline
20 April 2015Most recent
£120,000
-4.0%over 8 years20 April 2006
£124,999
+119.5%over 6 years29 April 1999
£56,950
+29.4%over 1 year11 September 1997
£44,000
Median price across the last 5 sales in SN1 5QY: £194,500 (2026–2024).
Nearby sales in SN1 5QY
Versus other Dowling Street homes
20a outperforms the street on epc rating by a wide margin.
EPC Rating
68 (D)
Street avg 61 (D)
Floor Area
44 m²
Street avg 53 m²
CO₂ Emissions
2.1 t/year
Street avg 3.0 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Similar properties nearby
The neighbourhood at a glance
Crime
380/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Commercial Road — bus stop.
Closest school
0.4 km
Holy Rood Catholic Primary School. 30 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
51.5dB

Night-time· 23:00 – 07:00
39.1dB







