20 Cornish Close, Cardiff, CF11 7BR
About 20 Cornish Close
20 Cornish Close is a one-bedroom semi-detached house in Cardiff (CF11 7BR). It has a recorded floor area of 37 m² (around 398 sq ft), construction records dating it to 1991-1995 and council tax band B. At 37 m² this is the 6th smallest of 17 units on EPC record in the building, where floor areas span 30–45 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (April 2022) shows a C (score 72). When first surveyed in April 2011 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Poor to Average, hot-water efficiency went from Very Poor to Good and lighting went from Average to Very Good.
Across 2000–2011, sale prices on this property compounded at 3.8% per year. Today's modelled estimate of £130,000 sits 100% above the 2011 sale of £65,000. On the market in September 2011 and unlisted since — roughly 15 years. One historical planning record sits against the property in 2018.
What this property has
Inside
- Bedrooms1
- Bathrooms1
Outside
- Private gardenRear
- ParkingAllocated
Building
- RefurbishedYes
Energy performance
20 Cornish Close's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Upgraded to gas central heating
Hot water system upgraded
Windows upgraded, improving insulation
More low energy lighting installed
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Planning history
1 application on record at 20 Cornish Close, Cardiff, CF11 7BR
- Sept 2018RenovationFullOutcome in report
INSTALL OF BI-FOLD DOORS TO REAR OF PROPERTY
- Documents
- 7 docs on file
- Reference
- 18/01802/DCH
Unlock 20 Cornish Close, Cardiff, CF11 7BR's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 8 notable nearby
- The 7 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
20 Cornish Close's estimated value is more than triple its earliest registered sale price (2000).
£130,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.8% per year over 11 years.
£65,000
Growth on file: 3.8% per year over 11 years.
Sales timeline
29 September 2011Most recent
£65,000
+51.2%over 11 years20 July 2000
£43,000
Median price across the last 5 sales in CF11 7BR: £108,000 (2024–2019).
Nearby sales in CF11 7BR
Versus other Cornish Close homes
On price per m², 20 Cornish Close runs well behind the street norm.
Price per m²
£1,757
Street avg £2,487
Floor Area
37 m²
Street avg 38 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
1.4 t/year
Street avg 1.8 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Horle Close — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







