Building work in Cardiff spans everything from small domestic repairs to major extensions and new-build projects. Labour rates vary considerably depending on the complexity of the job, local material costs, and whether you need specialist trades on site. Cardiff's varied property stock—from Victorian terraces in Cathays and Roath to inter-war semis in Llandaff and modern apartments in the city centre—means builders here handle everything from listed building conversions to contemporary extensions. This guide sets out realistic costs so you can budget properly and find a local builder who understands Cardiff's planning requirements and building regulations.
Builder Prices in Cardiff
| Service | Typical Cost | Unit |
|---|---|---|
| Single storey extension (60 sq m) | £35000 – £55000 | per project |
| Kitchen refurbishment (full) | £8000 – £15000 | per project |
| Bathroom renovation | £4500 – £9000 | per project |
| Roof repairs or re-slating | £3000 – £8500 | per project |
| Loft conversion (basic) | £18000 – £35000 | per project |
| Brickwork or repointing | £120 – £200 | per square metre |
| Groundworks and foundations | £150 – £300 | per square metre |
| General labour (day work) | £180 – £250 | per day |
Prices are indicative averages for Cardiff. Actual quotes will vary based on job specifics.
What Affects the Cost?
Building costs in Cardiff depend heavily on project scope, structural complexity, and material availability across the local supply chain. Ground conditions in areas like Cathays and Pontcanna differ from those in Llanishen, affecting foundation costs. Listed property work in Victorian and Edwardian properties across Roath and Canton demands specialist skills and period-appropriate materials, typically raising costs by 15–25%. Labour availability throughout the Welsh capital fluctuates seasonally, and obtaining planning permission or listed building consent can extend timelines and budgets.
Money-Saving Tips
Get quotes from at least three Cardiff builders, but avoid the cheapest automatically—mid-range quotes often reflect realistic timelines and material costs. Plan extensions for winter months when labour availability increases and scheduling flexibility improves. Buy materials in bulk where possible; local suppliers in the Cathays industrial estate often negotiate better rates for larger orders.
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