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
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- Every decision — granted, refused or withdrawn (1 on record)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.
£345,000
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 Doe Close, Penylan
CF23 9HJ
1 Firstbrook Close
CF23 9ER
1 Baber Close
CF23 9BX
1 Kingwood Close, Penylan
CF23 9HE
1 Hugon Close
CF23 9BY
1 Ffordd Nowell, Penylan
CF23 9FA
1 Grafton Close, Penylan
CF23 9JA
1 Howardian Close, Penylan
CF23 9AG
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising 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.







