34 Castle Road, Tongwynlais, Cardiff, CF15 7JQ
About 34 Castle Road
34 Castle Road is a mid-terrace house in Tongwynlais, Cardiff, Cardiff (CF15 7JQ). It has a recorded floor area of 101 m² (around 1087 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (August 2023) shows a C (score 73). The rating has held steady at C across 2 certificates since July 2010. Between certificates, wall efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 85).
One planning record on file: an extension approved in 2012. Past consents include an extension, meaningful when judging how the property has evolved. Across 2011–2023, sale prices on this property compounded at 4.9% per year. On a £-per-square-foot basis, the last sale (£299/sq ft) was about 42.3% above the typical sold price in the postcode. Last sale on file: £325,000 in November 2023.
Energy performance
EPC Rating
Certificate validity
Valid until 22 August 2033
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Get a survey for this property
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.
From £955 · Includes VAT
Planning history
34 Castle Road has an approved single-storey rear extension on the planning record.
1 application on record at 34 Castle Road, Tongwynlais, Cardiff, CF15 7JQ
- Aug 2012ExtensionFullOutcome in report
Extension: Single storey · Rear of property
SINGLE STOREY EXTENSION TO REAR
- Documents
- 8 docs on file
- Reference
- 12/01119/DCH
Unlock 34 Castle Road, Tongwynlais, Cardiff, CF15 7JQ'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- Every decision — granted, refused or withdrawn (1 on record)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 1 notable nearby
- The 8 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
34 Castle Road valuation sits well clear of the typical sold price in this postcode.
£345,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.9% per year over 12 years.
£325,000
Growth on file: 4.9% per year over 12 years.
Sales timeline
1 November 2023Most recent
£325,000
+78.6%over 12 years6 October 2011
£182,000
Median price across the last 5 sales in CF15 7JQ: £265,000 (2025–2022).
Nearby sales in CF15 7JQ
17 Castle Road, Tongwynlais, Cardiff, CF15 7JQ
Sold Dec 2025
£462,5003 Castle Road, Tongwynlais, Cardiff, CF15 7JQ
Sold Apr 2023
£265,0005 Castle Road, Tongwynlais, Cardiff, CF15 7JQ
Sold Mar 2023
£289,0001 Castle Road, Tongwynlais, Cardiff, CF15 7JQ
Sold Jun 2022
£252,500Ty Isaf Farm, Ty Newydd, Castle Road, Tongwynlais, Cardiff, CF15 7JQ
Sold Feb 2021
£615,000
Versus other Castle Road homes
Years Held for 34 Castle Road lags the street by a wide margin.
Price per m²
£3,218
Street avg £3,020
Floor Area
101 m²
Street avg 132 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
3.0 t/year
Street avg 4.8 t/year
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The neighbourhood at a glance
Crime
85/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Catherine Drive — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







