Old Post Office, Newport Road, Castleton, Cardiff, CF3 2UR
About Old Post Office
Old Post Office is a detached house in Castleton, Cardiff, Cardiff (CF3 2UR). It has a recorded floor area of 114 m² (around 1227 sq ft) and construction records dating it to before 1900. The latest certificate (March 2020) shows an E (score 49), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 80), a 2-band jump.
At 114 m² it sits well below the postcode median (164 m² across 7 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). 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £361,000 is 16.5% above the 2020 sale price. Sold September 2020 for £310,000.
Energy performance
Old Post Office's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
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Level 3 Building Survey
Because the property was built before 1919 and has been extended more than once, we believe a Level 3 building survey should be considered.
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Planning history
Council records include a two-storey rear extension at Old Post Office.
2 applications on record at Old Post Office, Newport Road, Castleton, Cardiff, CF3 2UR
- Jun 2003New BuildOutlineOutcome in report
DEMOLITION OF POST OFFICE AND ERECTION OF TWO DETACHED DWELLINGS (OUTLINE) Show full description
- Reference
- 03/0519
- More recent applications — locked
- ExtensionFeb 2021Decision
Unlock Old Post Office, Newport Road, Castleton, Cardiff, CF3 2UR'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- Every decision — granted, refused or withdrawn (2 on record)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 1 notable nearby
- The 11 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£361,000
Modelled from EPC, postcode comparables.
£310,000
Recorded with HM Land Registry.
Sales timeline
16 September 2020Most recent
£310,000
Median price across the last 5 sales in CF3 2UR: £400,000 (2025–2021).
Nearby sales in CF3 2UR
Pentire, Newport Road, Castleton, Cardiff, CF3 2UR
Sold Jun 2025
£420,000Albany House, Newport Road, Castleton, Cardiff, CF3 2UR
Sold Nov 2022
£445,0001 Ty Coch, Newport Road, Castleton, Cardiff, CF3 2UR
Sold Feb 2022
£370,000Cottingley, Newport Road, Castleton, Cardiff, CF3 2UR
Sold Oct 2021
£400,0002 Ty Coch, Newport Road, Castleton, Cardiff, CF3 2UR
Sold May 2019
£399,000
Versus other Newport Road homes
Old Post Office is notably below the street on floor area.
Price per m²
£2,719
Street avg £2,647
Floor Area
114 m²
Street avg 194 m²
Habitable Rooms
6 rooms
Street avg 7 rooms
CO₂ Emissions
6.8 t/year
Street avg 7.1 t/year
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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
0.0 km
Castleton Old Post Office — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







