4a, Marshfield Road, Castleton, Cardiff, CF3 2UU
About 4a
4a is a semi-detached house in Castleton, Cardiff, Cardiff (CF3 2UU). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (August 2018) shows an E (score 48), well below the UK norm with real room to improve. When first surveyed in September 2010 the rating was F, the property has climbed 1 band since. Between certificates, window efficiency went from Poor to Average. The recommended improvements would lift it to B (score 87), a 3-band jump.
Untraded for 23 years, with the last transfer in August 2003. Today's modelled estimate of £334,000 sits 126.4% above the 2003 sale of £147,500. On a £-per-square-foot basis, the last sale (£343/sq ft) was about 67% above the typical sold price in the postcode. At 40 m² it sits well below the postcode median (153 m² across 22 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Certificate validity
Valid until 4 August 2028
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
4a has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£334,000
Modelled from EPC, postcode comparables.
£147,500
Recorded with HM Land Registry.
Sales timeline
11 August 2003Most recent
£147,500
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
On price per m², 4a stands well clear of the street.
Price per m²
£3,688
Street avg £2,393
Floor Area
40 m²
Street avg 158 m²
Habitable Rooms
3 rooms
Street avg 6 rooms
CO₂ Emissions
3.1 t/year
Street avg 5.2 t/year
Similar properties nearby
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1 Oakfields, Marshfield
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1 Channel View, Castleton
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1 Groes Fawr Close, Marshfield
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1 Acorn Place, Castleton
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The neighbourhood at a glance
Crime
242/mo
Falling 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.







