23 Grafton Close, Penylan, Cardiff, CF23 9JA
About 23 Grafton Close
23 Grafton Close is a semi-detached house in Penylan, Cardiff, Cardiff (CF23 9JA). It has a recorded floor area of 126 m² (around 1356 sq ft), construction records dating it to 1967-1975 and council tax band E. The latest certificate (February 2024) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since May 2023. Between certificates, window efficiency went from Average to Good. The recommended improvements would push it to B (score 83).
At 126 m² the property is well over the postcode median (90 m² across 11 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2009. Past consents include an extension, meaningful when judging how the property has evolved.
Energy performance
EPC Rating
Certificate validity
Valid until 8 February 2034
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Low energy lighting percentage decreased
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Planning history
23 Grafton Close has an approved single-storey rear extension on the planning record.
1 application on record at 23 Grafton Close, Penylan, Cardiff, CF23 9JA
- Feb 2009ExtensionFullOutcome in report
Extension: Single storey · Rear of property
GROUND & FIRST FLOOR REAR EXTENSION
- Documents
- 4 docs on file
- Reference
- 08/02654/E
Unlock 23 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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 2 notable nearby
- The 4 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
23 Grafton Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£371,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
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
EPC Rating for 23 Grafton Close runs comfortably ahead of the street norm.
EPC Rating
75 (C)
Street avg 62 (D)
Floor Area
126 m²
Street avg 87 m²
CO₂ Emissions
3.1 t/year
Street avg 3.8 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
Similar properties nearby
1 Baber Close
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1 Firstbrook Close
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1 Hugon Close
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1 Earl S Court Road, Penylan
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1 Ffordd Nowell, Penylan
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1 Barons Court Road, 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.







