12 Bonner Close, Grange Park, Swindon, SN5 6HA
About 12 Bonner Close
12 Bonner Close is an end-of-terrace house in Grange Park, Swindon, Swindon (SN5 6HA). It has a recorded floor area of 61 m² (around 657 sq ft), construction records dating it to 1976-1982 and council tax band B. The latest certificate (May 2024) shows a C (score 78), near the top of the C band. When first surveyed in February 2013 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Average, hot-water efficiency went from Average to Good and lighting went from Good to Very Good.
Across 2013–2021, sale prices on this property compounded at 4.5% per year. Today's modelled estimate of £221,000 is 31.9% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£255/sq ft) was about 43.8% above the typical sold price in the postcode. One planning record on file: an extension refused in 2020. Last sale on file: £167,500 in March 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 12 Bonner Close
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system changed
Hot water system upgraded
Loft insulation upgraded to recommended levels
More low energy lighting installed
Solar PV panels (35 kWp) installed
Planning history
- Nov 2020ExtensionFullIn report
Extension: Single storey
Erection of a single storey rear and single storey front extensions.
- Agent
- MJF CAD Solutions
- Documents
- 10 docs on file
- Reference
- S/HOU/20/1166
What's in 12 Bonner Close, Grange Park, Swindon, SN5 6HA's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£221,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.5% per year over 8 years.
£167,500
Growth on file: 4.5% per year over 8 years.
Sales timeline
12 March 2021Most recent
£167,500
+40.8%over 7 years4 July 2013
£119,000
Median price across the last 5 sales in SN5 6HA: £220,000 (2025–2022).
Nearby sales in SN5 6HA
7 Bonner Close, Grange Park, Swindon, SN5 6HA
Sold Apr 2025
£220,0004 Bonner Close, Grange Park, Swindon, SN5 6HA
Sold May 2024
£175,00011 Bonner Close, Grange Park, Swindon, SN5 6HA
Sold May 2024
£242,0006 Bonner Close, Grange Park, Swindon, SN5 6HA
Sold Oct 2022
£237,0001 Bonner Close, Grange Park, Swindon, SN5 6HA
Sold Jun 2021
£307,000
Everything we know about 12 Bonner Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Bonner Close homes
12 Bonner Close outperforms the street on epc rating by a wide margin.
Price per m²
£2,746
Street avg £3,486
Floor Area
61 m²
Street avg 59 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
1.7 t/year
Street avg 2.5 t/year
Similar properties nearby
1 Bradenham Road, Grange Park
SN5 6EB
1 Camden Close, Grange Park
SN5 6BU
1 Bancroft Close, Grange Park
SN5 6HB
1 Carey Close, Grange Park
SN5 6BH
1 Bosworth Road, Grange Park
SN5 6AL
1 Cabot Drive, Grange Park
SN5 6HG
1 Devereux Close, Grange Park
SN5 6HE
1 Bale Close, Grange Park
SN5 6HX
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Sleaford Close — bus stop.
Closest school
0.1 km
Lydiard Park Academy. 15 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
46.8dB

Night-time· 23:00 – 07:00
37.5dB