Bathroom Cost Calculator
Estimate bathroom renovation costs for budget, mid-range and premium finishes with optional extras.
Last updated: April 2026 · Source: GOV.UK — Building Regulations Approved Document P
Estimated Total Cost (Mid-Range)
£6,050.00
~7 days work
| Bathroom Suite | £1,500.00 |
| Labour (7 days) | £1,750.00 |
| Tiling | £800.00 |
| Plumbing | £800.00 |
| Electrical | £400.00 |
| Shower | £800.00 |
Disclaimer
This calculator is provided for informational purposes only and should not be considered as financial or tax advice. All calculations are performed locally in your browser — no personal data is collected or sent to our servers. Rates and thresholds are sourced from HMRC and GOV.UK and are updated for the current tax year. Always verify results with HMRC or consult a qualified professional before making financial decisions.
How It Works
Bathroom renovation costs range from £3,000–£6,000 for a basic refit (replacing suite, re-tiling, keeping layout) to £8,000–£15,000 for a mid-range project (new suite, full re-tile, updated plumbing, heated towel rail) and £15,000–£25,000+ for a luxury finish (freestanding bath, walk-in shower, underfloor heating, bespoke tiling).
Key cost drivers include: whether the layout changes (moving waste pipes and water supply adds significantly to plumbing costs), the specification of sanitaryware and tiling, and whether structural work is needed (such as strengthening the floor for a cast-iron bath). A standard bathroom refit takes 1–2 weeks.
Enter your bathroom size, specification level and scope. The calculator estimates costs for the suite, tiling, plumbing, electrics (extractor fan, heated mirror, underfloor heating), flooring and labour. Any electrical work in a bathroom must comply with Building Regulations Part P and be done by a qualified electrician.
Example: Mid-range family bathroom, 6 m²
- Suite (bath, basin, WC, shower): £1,800
- Tiling (walls and floor): £1,500
- Plumbing and electrics: £2,500
- Towel rail, mirror, accessories: £500
- Labour: £3,000 — Total: ~£9,300 including VAT
Frequently Asked Questions
- What does the Bathroom Cost Calculator do?
- Estimate bathroom renovation costs for budget, mid-range and premium finishes with optional extras. All calculations are performed in your browser using official UK rates and thresholds.
- Does this include waste allowance?
- Yes. Most building material calculations include a standard 10% waste allowance. You can adjust this figure depending on the complexity of your project and cutting requirements.
- Are prices accurate?
- Material prices are indicative estimates based on average UK prices. Actual costs vary by region, supplier, brand and current market conditions. Always get quotes from local suppliers.