299a, Marshfield Road, Castleton, Cardiff, CF3 2UU
About 299a
299a is a detached house in Castleton, Cardiff, Cardiff (CF3 2UU). It has a recorded floor area of 210 m² (around 2259 sq ft) and construction records dating it to 1967-1975. The latest certificate (July 2009) shows a C (score 71). The latest certificate is from July 2009, so improvements made since then won't be reflected.
It hasn't traded since July 2005, a hold of 21 years that's notably long for the area. At 210 m² the property is well over the postcode median (147 m² across 22 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £681,000 sits 75.5% above the 2005 sale of £388,000. On a £-per-square-foot basis, the last sale (£172/sq ft) was about 20.4% below the postcode norm. 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
299a'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This certificate is over 10 years old and is no longer valid.Expired 01 Jul 2019
EPC Rating
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Planning history
299a has an approved single-storey rear extension on the planning record.
1 application on record at 299a, Marshfield Road, Castleton, Cardiff, CF3 2UU
- Jul 2009ExtensionFullOutcome in report
Extension: Single storey · Rear of property
ERECTION OF SINGLE STOREY REAR EXTENSION
- Documents
- 7 docs on file
- Reference
- 09/0495
Unlock 299a, Marshfield Road, Castleton, Cardiff, CF3 2UU'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- Every decision — granted, refused or withdrawn (1 on record)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 1 notable nearby
- The 7 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
299a valuation sits well clear of the typical sold price in this postcode.
£681,000
Modelled from EPC, postcode comparables.
£388,000
Recorded with HM Land Registry.
Sales timeline
28 July 2005Most recent
£388,000
Median price across the last 5 sales in CF3 2UU: £450,000 (2024–2021).
Nearby sales in CF3 2UU
19 Marshfield Road, Castleton, Cardiff, CF3 2UU
Sold Jul 2024
£450,0002 Marshfield Road, Castleton, Cardiff, CF3 2UU
Sold May 2024
£280,000301 Marshfield Road, Castleton, Cardiff, CF3 2UU
Sold Aug 2023
£790,000311 Marshfield Road, Castleton, Cardiff, CF3 2UU
Sold Sept 2021
£260,00010 Marshfield Road, Castleton, Cardiff, CF3 2UU
Sold Feb 2021
£455,000
Versus other Marshfield Road homes
299a is notably below the street on price per m².
Price per m²
£1,849
Street avg £2,516
Floor Area
210 m²
Street avg 150 m²
Habitable Rooms
7 rooms
Street avg 6 rooms
CO₂ Emissions
5.5 t/year
Street avg 5.1 t/year
Similar properties nearby
1 Marshfield Road, Castleton
CF3 2UU
1 Church Close, Peterstone Wentlooge
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1 Clos Padrig, St Mellons
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1 Clos Medwy, St Mellons
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1 Clos Elphan, St Mellons
CF3 2AE
1 Cambrian Crescent, Marshfield
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1 Cambrian Grove, Marshfield
CF3 2US
1 Groes Fawr Close, Marshfield
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
3/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Castleton Rise — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







