How to compare bathroom quotes properly (and why they vary so much)
Why quotes can range from £7,000 to £20,000+ for similar sounding bathrooms, and how to compare installers fairly without panic or misinformation.
At a glance
Quick Checklist
Key points at a glance
- 1Get at least 3 detailed quotes
- 2Check scope and specifications match between quotes
- 3Confirm waterproofing and tanking is included
- 4Ask about electrical certification and who handles it
- 5Understand the contingency and hidden damage approach
- 6Verify insurance, guarantees, and aftercare
- 7Request itemised breakdowns, not just a total
Questions to ask your installer
Take these to your next conversation with your fitter
- 1What exactly is included and excluded in this quote?
- 2Is waterproofing/tanking included? What system do you use?
- 3Who handles the electrics and will I get certification?
- 4How long will the job realistically take from start to finish?
- 5What happens if you find hidden damage (rotten joists, old pipework)?
- 6Will I receive an itemised quote, or just a total figure?
- 7What warranty or aftercare do you provide after completion?
- 8Can I speak to a previous customer or see photos of finished work?
- 9What's your payment schedule and terms?
- 10Are you VAT registered and is VAT included in this price?
💡 Tip: A good installer will welcome these questions. If they dismiss them, that's a red flag.
💡Myth vs Reality
Common Myth
"All quotes for the same bathroom should be similar"
The Reality
Quotes can easily vary 50%+ depending on scope, specifications, product quality, and installer experience. Two installers may be pricing completely different jobs even if the room looks the same.
Common Myth
"The cheapest quote is the best deal"
The Reality
Low quotes often exclude essential work (like waterproofing), use budget materials, or come from less experienced tradespeople. The cheapest quote frequently becomes the most expensive project.
Common Myth
"Expensive quotes mean you're being overcharged"
The Reality
Higher quotes often include better specifications, proper tanking, quality products, and experienced labour. Look at what's included, not just the total.
Common Myth
"Bathroom specialists are always more expensive than builders"
The Reality
Specialists may charge similar or less because they're more efficient, make fewer mistakes, and don't need to subcontract as much.
Common Myth
"If nothing is mentioned, it must be included"
The Reality
Never assume. If something isn't explicitly listed in the quote, ask. Verbal agreements don't protect you when disputes arise.
What to look for
- •Wide quote variation is common in UK bathrooms — it doesn't automatically mean someone is ripping you off
- •Rip-out and waste removal (skip hire, disposal costs)
- •Labour time — full bathroom renovations typically take 10–15 working days
- •Waterproofing and tanking (essential in wet areas)
- •Plumbing alterations and new pipework
- •Electrical work, extractor fans, and certification
- •Plastering, carpentry, boxing in, and making good
- •Tiling complexity, floor preparation, and specialist adhesives
- •VAT (if applicable) and business overheads
- •The biggest reason quotes differ is scope — two installers may be pricing completely different jobs
- •Check: full tanking vs minimal sealing, tile backer boards vs tiling onto plaster, premium adhesives vs budget materials
- •Bathroom specialists are often more efficient, better stocked, and more accurate on timelines
- •General builders may subcontract more, which can affect coordination and accountability
Common mistakes
- •Comparing total prices without checking what's included
- •Choosing the cheapest quote assuming all specs are equal
- •Not asking about exclusions that will become 'extras' later
- •Failing to check references, insurance, and previous work photos
- •Ignoring vague wording like 'allowances' or 'to be confirmed'
- •Not asking what happens if hidden damage is discovered
- •Feeling rushed into accepting a quote without written scope
Quality considerations
- •Clear written scope with nothing left vague or 'TBC'
- •Itemised quote breaking down labour, materials, and contingencies
- •Professional communication — prompt responses and clear explanations
- •Proper insurance (public liability and employer's liability)
- •Happy to share references and photos of previous similar projects
- •Realistic timeline that accounts for drying times and product lead times
- •Vague 'ballpark' pricing with no written breakdown
- •Pressure to pay large deposits upfront or cash only
- •No mention of waterproofing or tanking in wet areas
- •Unrealistically short timeline that sounds too good to be true
- •Reluctance to answer questions or provide documentation
- •Many full bathroom renovations in the UK fall into the £8,000–£18,000 range depending on region, finishes, and site conditions — this is not a quote, just an early planning guide
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This guide is written to help you make informed decisions, not to sell you anything. Always discuss your specific situation with a qualified installer.