23 Cardean House, Fire Fly Avenue, Swindon, SN2 2GE
About 23 Cardean House
23 Cardean House is a one-bedroom mid-terrace house in Swindon (SN2 2GE). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 2007-2011 and council tax band B. At 47 m² this is the 8th smallest of 30 units on EPC record in the building, where floor areas span 36–75 m². The building's EPC ratings span D to C, with this unit at the top. On EPC score it ranks first in the building (79 versus a worst of 61). The latest certificate (May 2025) shows a C (score 79), near the top of the C band. The rating has held steady at C across 2 certificates since February 2014. Between certificates, hot-water efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 85). Main heating runs on electricity.
Last sale on file: £115,000 in February 2021. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 2014–2021, sale prices on this property compounded at 0.7% per year.
What this property has
Inside
- Bedrooms1
- Bathrooms1
- Open-plan layoutYes
- Dining roomYes
Outside
- ParkingUnderground
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Hot water system upgraded
Loft insulation upgraded to recommended levels
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
23 Cardean House has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
23 Cardean House saw 4 transfers in just over a decade — high turnover for the postcode.
£124,000
Modelled from EPC, postcode comparables and a sale-price growth of 0.7% per year over 7 years.
£115,000
Growth on file: 0.7% per year over 7 years.
Sales timeline
19 February 2021Most recent
£115,000
-6.5%over 2 years15 January 2019
£123,000
30 November 2016
£123,000
+11.8%over 2 years29 April 2014
£110,000
Median price across the last 5 sales in SN2 2GE: £135,000 (2025–2023).
Nearby sales in SN2 2GE
28 Cardean House, Fire Fly Avenue, Swindon, SN2 2GE
Sold Feb 2025
£167,0003 Cardean House, Fire Fly Avenue, Swindon, SN2 2GE
Sold Sept 2024
£125,00020 Cardean House, Fire Fly Avenue, Swindon, SN2 2GE
Sold Apr 2024
£137,0006 Cardean House, Fire Fly Avenue, Swindon, SN2 2GE
Sold Mar 2024
£130,0008 Cardean House, Fire Fly Avenue, Swindon, SN2 2GE
Sold Jun 2023
£135,000
Versus other Fire Fly Avenue homes
EPC Rating for 23 Cardean House runs comfortably ahead of the street norm.
Price per m²
£2,447
Street avg £2,439
Floor Area
47 m²
Street avg 56 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
1.6 t/year
Street avg 1.9 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
8/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Emlyn Square — bus stop.
Closest school
0.2 km
UTC Swindon. 33 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
51.3dB

Night-time· 23:00 – 07:00
41.4dB







