20 Gantlettdene, Swindon, SN3 5EL
About 20 Gantlettdene
20 Gantlettdene is a three-bedroom semi-detached house in Swindon (SN3 5EL). It has a recorded floor area of 82 m² (around 883 sq ft), construction records dating it to 1976-1982 and council tax band C. The latest certificate (January 2026) shows a D (score 60), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2015. Between certificates, roof efficiency went from Average to Good; while wall efficiency dropped from Good to Average and window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 80). The home occupies a cul-de-sac position.
It changed hands recently, sold May 2026 for £307,000. Across the public record there are 4 sales, relatively high churn for a single property. Across 2005–2026, sale prices on this property compounded at 2.9% per year. On a £-per-square-foot basis, the last sale (£348/sq ft) was about 60.2% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms3
- Bathrooms1
Outside
- Private gardenYes
- ParkingYes
- Cul-de-sacYes
Everything you need to know about 20 Gantlettdene
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
EPC Rating
Certificate validity
Valid until 20 January 2036
Property Improvements
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Planning history
20 Gantlettdene has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
20 Gantlettdene valuation sits well clear of the typical sold price in this postcode.
£311,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.9% per year over 21 years.
£307,000
Growth on file: 2.9% per year over 21 years.
Sales timeline
28 May 2026Most recent
£307,000
+36.4%over 10 years13 January 2016
£225,000
+27.8%over 9 years8 December 2006
£176,000
+2.9%over 1 year23 November 2005
£171,000
Median price across the last 5 sales in SN3 5EL: £306,500 (2025–2023).
Versus other Gantlettdene homes
Years Held for 20 Gantlettdene lags the street by a wide margin.
Price per m²
£3,744
Street avg £3,132
Floor Area
82 m²
Street avg 83 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
4.1 t/year
Street avg 3.3 t/year
Everything you need to know about 20 Gantlettdene
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Crime
318/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Gantlettdene — bus stop.
Closest school
0.5 km
The Dorcan Academy. 21 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
56.2dB
Night-time· 23:00 – 07:00
48.8dB