11 Grafton Close, Penylan, Cardiff, CF23 9JA
About 11 Grafton Close
11 Grafton Close is a three-bedroom detached house in Penylan, Cardiff, Cardiff (CF23 9JA). It has a recorded floor area of 107 m² (around 1156 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (January 2011) shows a D (score 64), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 73). The latest certificate is from January 2011, so improvements made since then won't be reflected.
Today's modelled estimate of £400,000 sits 65.3% above the 2011 sale of £242,000. On a £-per-square-foot basis, the last sale (£209/sq ft) was about 15.9% above the typical sold price in the postcode. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. At 107 m² it's 19.3% larger than the typical home in the postcode (90 m² median across 11 EPCs). Last changed hands 15 years ago, in August 2011.
What this property has
Inside
- Bedrooms3
Outside
- Private gardenFront and rear
- GarageYes
Building
- Central heatingYes
Energy performance
11 Grafton Close's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 14 Jan 2021
EPC Rating
Certificate validity
Expired on 14 January 2021
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Planning history
11 Grafton Close has an approved side extension on the planning record.
2 applications on record at 11 Grafton Close, Penylan, Cardiff, CF23 9JA
- Jan 2013ExtensionFullOutcome in report
Extension: Side of property
RETENTION OF SINGLE STOREY SIDE EXTENSION
Retrospective- Documents
- 5 docs on file
- Reference
- 12/01834/DCH
- More recent applications — locked
- OutbuildingSept 2019Decision
Unlock 11 Grafton Close, Penylan, Cardiff, CF23 9JA's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 2 notable nearby
- The 12 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
11 Grafton Close valuation sits well clear of the typical sold price in this postcode.
£400,000
Modelled from EPC, postcode comparables.
£242,000
Recorded with HM Land Registry.
Sales timeline
24 August 2011Most recent
£242,000
Median price across the last 5 sales in CF23 9JA: £270,000 (2025–2021).
Nearby sales in CF23 9JA
21 Grafton Close, Penylan, Cardiff, CF23 9JA
Sold Aug 2025
£250,0003 Grafton Close, Penylan, Cardiff, CF23 9JA
Sold Mar 2024
£200,0007 Grafton Close, Penylan, Cardiff, CF23 9JA
Sold Mar 2023
£420,00013 Grafton Close, Penylan, Cardiff, CF23 9JA
Sold Feb 2023
£270,00017 Grafton Close, Penylan, Cardiff, CF23 9JA
Sold Oct 2017
£130,000
Versus other Grafton Close homes
11 Grafton Close is notably below the street on co₂ emissions.
Price per m²
£2,254
Street avg £3,039
Floor Area
107 m²
Street avg 88 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
4.7 t/year
Street avg 3.7 t/year
Similar properties nearby
1 Hugon Close
CF23 9BY
1 Firstbrook Close
CF23 9ER
1 Kingwood Close, Penylan
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1 Earl S Court Road, Penylan
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1 Bryn Y Nant, Llanedeyrn
CF23 9NZ
1 Baber Close
CF23 9BX
1 Barons Court Road, Penylan
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1 Colchester Avenue, Penylan
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The neighbourhood at a glance
Crime
169/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Grafton Close — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







