21 Grosvenor Road, Swindon, SN1 4LT
About 21 Grosvenor Road
21 Grosvenor Road is a three-bedroom semi-detached house in Swindon (SN1 4LT). It has a recorded floor area of 93 m² (around 1001 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (December 2021) shows a C (score 75), near the top of the C band. When first surveyed in May 2018 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Poor to Good and lighting went from Good to Very Good. The recommended improvements would push it to B (score 86). Records show the property has been extended at some point in its history.
One planning record on file: an extension approved in 2010. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £341,000 is 45.1% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£235/sq ft) was about 24.8% above the typical sold price in the postcode. Last sale on file: £235,000 in January 2019.
What this property has
Inside
- Bedrooms3
- Bathrooms2
Outside
- Private gardenRear
- GarageYes
Building
- Previously extendedYes
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Window efficiency improved
Floor insulation added or improved
More low energy lighting installed
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Planning history
21 Grosvenor Road has an approved single-storey rear extension on the planning record.
1 application on record at 21 Grosvenor Road, Swindon, SN1 4LT
- Jan 2010ExtensionFullOutcome in report
Extension: Single storey · Rear of property
Erection of a single storey rear extension and disabled ramps to side and rear.
- Documents
- 3 docs on file
- Reference
- S/09/2218
Unlock 21 Grosvenor Road, Swindon, SN1 4LT'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- Every decision — granted, refused or withdrawn (1 on record)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 4 notable nearby
- The 3 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
21 Grosvenor Road valuation sits well clear of the typical sold price in this postcode.
£341,000
Modelled from EPC, postcode comparables.
£235,000
Recorded with HM Land Registry.
Sales timeline
18 January 2019Most recent
£235,000
Median price across the last 5 sales in SN1 4LT: £285,000 (2024–2022).
Nearby sales in SN1 4LT
Versus other Grosvenor Road homes
21 Grosvenor Road outperforms the street on epc rating by a wide margin.
Price per m²
£2,527
Street avg £2,476
Floor Area
93 m²
Street avg 90 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
2.6 t/year
Street avg 4.4 t/year
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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
Hillside Avenue — bus stop.
Closest school
0.5 km
Robert Le Kyng 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
50.1dB

Night-time· 23:00 – 07:00
39.9dB







