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Wales regional cost guide

Bathroom Renovation Cost in Cardiff

Current 2026 national benchmarks adjusted with the transparent UK Home Costs Wales planning model, plus worked Cardiff examples.

Last reviewed: 1 September 2026 · 0.91× regional model · Methodology

Modelled bathroom average£6,350
Planning context£5,000–£7,300 typical; £12,750+ high-end model
This page does not claim to measure observed contractor prices in Cardiff. It starts with dated UK benchmarks, applies the stated UK Home Costs modelling assumption and rounds the result for early budgeting.

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Bathroom renovation benchmark in Cardiff

Current UK new-bathroom range£5,500–£8,000
UK average£7,000
Cardiff modelled typical range£5,000–£7,300
Cardiff modelled average£6,350
UK high-end / complex reference£14,000+
Cardiff modelled high-end reference£12,750+

Bathroom calculator bands in Cardiff

These are the same planning bands used by the live calculator before optional layout and underfloor-heating additions. Values are modelled low · typical · high.

Budget refresh£3,650 · £5,000 · £6,350
Standard new bathroom£5,000 · £6,350 · £8,200
High-end / complex£8,200 · £12,750 · £18,200

Common UK bathroom extras

Old bathroom removal£600–£1,000
Electrical workAround £900
Wall tiling£950–£1,250
All plumbing first + second fix£1,500–£3,000
Underfloor heatingAround £100 / m²
Layout reconfiguration / new studworkAround £1,750

What can change a real Cardiff quote?

  • Bathroom size and finish level
  • Moving toilet, bath, shower or basin positions
  • Wall and floor tiling area
  • Bath, shower and enclosure specification
  • First- and second-fix plumbing
  • Electrical work and ventilation
  • Underfloor heating, plastering and decoration

Local planning considerations

For grants and energy schemes, verify the current Wales-specific eligibility rules before relying on any support assumption.

  • Use Wales-specific planning, building-control and energy-scheme information where the rules differ from England.
  • Terraced or constrained urban properties can add access, waste and scaffold costs that are not captured by the regional factor.
  • Drainage, roof and external-work scopes should be based on the property condition rather than a generic city assumption.

How the regional model works

The 0.91× factor places this planning estimate 9% below the national planning baseline. We keep that modelling assumption separate from the dated national benchmark so users can see which part comes from an external source and which part is UK Home Costs modelling.

Sources

Checkatrade

How Much Does a New Bathroom Cost in the UK?

Published / checked: March 2026

Used for: Bathroom installation and renovation benchmarks

View source ↗

Frequently asked questions

How much does a bathroom renovation cost in Cardiff in 2026?

The current UK new-bathroom benchmark is £5,500–£8,000 with a £7,000 average. The model gives £5,000–£7,300 typical and about £6,350 average.

How much can a high-end bathroom cost in Cardiff?

Current UK guidance says larger, high-end or complex bathrooms often reach £14,000+. The modelled Cardiff reference is around £12,750+.

Why is the Cardiff bathroom estimate different from the UK benchmark?

The live calculator applies the 0.91× regional model to the project and to modelled layout or underfloor-heating additions.

What commonly adds to a bathroom renovation quote?

Removal, plumbing changes, tiling, electrical work, underfloor heating, replastering, layout changes and premium sanitaryware can increase the total.

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