209a, Marlborough Road, Swindon, SN3 1NN
About 209a
209a is a four-bedroom detached house in Swindon (SN3 1NN). It has a recorded floor area of 263 m² (around 2831 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (June 2025) shows a C (score 71). When first surveyed in March 2020 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Average. The home occupies a cul-de-sac position.
At 263 m² the property is well over the postcode median (174 m² across 14 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. Today's modelled estimate of £841,000 sits 92.2% above the 2020 sale of £437,500. On a £-per-square-foot basis, the last sale (£155/sq ft) was about 42.5% below the postcode norm. One planning record on file: an extension approved in 2021. Past consents include an extension and new windows, meaningful when judging how the property has evolved. Last sale on file: £437,500 in August 2020.
What this property has
Inside
- Bedrooms4
- Bathrooms3
- Open-plan layoutYes
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenYes
- GarageYes
- Cul-de-sacYes
Building
- RefurbishedYes
Energy performance
209a ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Single glazing replaced with double or better glazing
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Planning history
1 application on record at 209a, Marlborough Road, Swindon, SN3 1NN
- Aug 2021ExtensionFullOutcome in report
Extension: Part single, part two storey · Side and rear of property
Erection of a two storey/ single storey rear extension, first floor side extension and alterations to existing windows & doors.
New Windows- Documents
- 8 docs on file
- Reference
- S/HOU/21/1099
Unlock 209a, Marlborough Road, Swindon, SN3 1NN'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- Every decision — granted, refused or withdrawn (1 on record)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 3 notable nearby
- The 8 documents, officer reports & conditions
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£841,000
Modelled from EPC, postcode comparables.
£437,500
Recorded with HM Land Registry.
Sales timeline
24 August 2020Most recent
£437,500
Median price across the last 5 sales in SN3 1NN: £520,000 (2025–2019).
Nearby sales in SN3 1NN
Versus other Marlborough Road homes
209a is notably below the street on price per m².
Price per m²
£1,663
Street avg £3,508
Floor Area
263 m²
Street avg 177 m²
Habitable Rooms
6 rooms
Street avg 8 rooms
CO₂ Emissions
6.3 t/year
Street avg 7.6 t/year
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Coate Hill Top — bus stop.
Closest school
0.4 km
Lawn Primary and Nursery School. 24 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
49.9dB

Night-time· 23:00 – 07:00
41.3dB







