Every half-finished bathroom we've rescued, every moldy three-year-old 'remodel' we've torn out, started with a hiring decision. Here are the seven mistakes behind nearly all of them — and the questions that catch problems before a contract is signed. Use this list on us, too.
Mistake 1: Never asking what goes behind the walls
The most expensive corner in remodeling is cut where you can't see it. Ask every bidder: 'What backing goes on the wet walls behind the surface?' Acceptable answers involve moisture-proof backing board or a documented waterproof membrane. 'The panels are waterproof' is not an answer — it's a red flag.
Mistake 2: Taking the lowest bid at face value
A bid thousands under the others isn't a bargain; it's a different project wearing the same name — usually a liner over the old tub or panels on bare drywall. Make every bid itemize tear-out, backing, base, walls, and fixtures so you're comparing the same job.
Mistake 3: Signing under same-day pressure
'This price is only good tonight' is a sales tactic, not a price. A real number based on real measurements is still real next week. Anyone pressuring you to sign before you've slept on it has told you something important about how the rest of the project will go.
Mistake 4: Accepting a verbal quote
Everything in writing: scope, materials, price, timeline range, and what happens if hidden damage turns up. A contractor who resists writing it down is planning to renegotiate later — mid-project, when you have no leverage.
Mistake 5: Not asking who does the work
Ask who will physically be in your house. A polished salesperson followed by an anonymous rotating crew is the national-brand model. You want to know the people doing the work — and that the crew that starts your job finishes it.
Mistake 6: Ignoring how they handle the weird stuff
Describe your room's quirks — the plaster, the odd angle, the slope in the floor — and watch the reaction. A contractor who gets curious is a craftsman. One who gets vague, or steers you hard toward their standard template, will fight your house instead of working with it.
Mistake 7: Not agreeing on the hidden-damage protocol up front
Some percentage of older bathrooms hide moisture damage. The question isn't whether it might happen — it's what happens when it does. The right answer: stop, photograph, written price, your approval before work continues. Get that protocol in the contract.