A bathroom remodel is a strange purchase: you're spending five figures on work that will mostly be hidden behind tile, judged over decades, and impossible to fully inspect once it's done. The waterproofing membrane you never see matters more than the faucet you touch every day. That's why choosing the contractor is the single highest-leverage decision in the whole project — more than the tile, more than the vanity, more than the budget itself.
The encouraging part: bad contractors are surprisingly consistent. They ask for the same too-big deposits, dodge the same questions, and skip the same paperwork. Which means a homeowner with a checklist can filter most of them out before any money moves. Here's the checklist.
Step 1: Verify before you chat
Charm is not a credential. Before any sit-down, verify four things — each takes minutes:
- License. Most states license general contractors and virtually all license plumbers and electricians. Look the license up on your state board's website yourself (don't just accept a number on a business card) and check for disciplinary history. In states without GC licensing, the plumbing and electrical subs still must be licensed.
- Insurance. Ask for certificates of general liability and workers' compensation, sent to you directly from the insurance agent. Liability protects your house; workers' comp protects you from being the deep pocket if someone is hurt on your property.
- Real local footprint. A physical address or at least a consistent local presence, a business that's existed for a few years, and reviews spread over time rather than clustered in one suspicious month.
- Bathroom-specific portfolio. Kitchens and decks don't count. You want recent photos of showers and wet areas — including, ideally, in-progress shots of waterproofing, which is the construction equivalent of showing your work.
Step 2: The twelve questions to ask
Ask these in the walkthrough. The specific answers matter less than whether they come back specific, unhurried, and consistent:
- How many bathrooms did you do last year? You want a practiced rhythm, not a first attempt on your house.
- What waterproofing system do you use, and why? The single best filter question in bathroom hiring. Good pros name a system and defend it with enthusiasm. Vague answers here predict vague membranes.
- Do you flood-test the shower pan? The right answer is yes, for 24 hours, before tile.
- Who actually does the work — your crew or subs? Both models can work; you're listening for who supervises and who your daily contact is.
- Who pulls the permit? The contractor should, under their license. "You can owner-pull it to save money" shifts liability onto you — decline.
- Will your crew be on my job every workday? Crews juggling three jobs turn a 3-week bath into a 7-week one.
- How do you handle surprises behind the wall? You want: stop, show you, price it in writing, proceed on approval. Not: "we'll sort it out at the end."
- What's your change-order process? Written and priced before work continues — anything looser becomes a dispute.
- What does your warranty cover, and for how long? One year on workmanship is common; stronger pros go longer on waterproofing. Get it in writing.
- Can I talk to two clients from last year and one from three-plus years ago? The old reference tells you how the work aged — which, in bathrooms, is the whole question.
- How do you protect the rest of the house? Listen for floor protection, dust barriers, and daily cleanup as habits, not favors.
- When could you start, and how long will you need? A quality pro often has a wait. Instant availability plus high polish is a combination worth questioning.
Step 3: Compare quotes the right way
Get three itemized quotes over the same written scope — same fixtures, same tile grade, same glass. Without a fixed scope, the numbers aren't comparable and the lowest bid is usually just the vaguest one. When the quotes arrive, line them up:
| What to compare | What good looks like | Warning sign |
|---|---|---|
| Itemization | Labor and materials broken out by trade and fixture | One lump number |
| Waterproofing | System named, flood test included | Not mentioned at all |
| Allowances | Realistic (e.g., mid-market tile per sq ft) | Teaser allowances that guarantee overruns |
| Permits | Included, pulled by contractor | "Not needed" or owner-pulled |
| Payment schedule | Milestone-based, final 10–15% at punch-list completion | Half or more up front |
| Price vs. the pack | Within ~15% of the others | Dramatically lowest bid |
About that dramatically low bid: it's rarely generosity. It's usually a thin scope that grows through change orders, or margin recovered from the parts you can't see. Ask the low bidder to walk you through what the others included that they didn't — the answer is always educational.
The red flags, collected
- No waterproofing in a shower quote. The failure mode of bathrooms, ignored in writing.
- Large deposits or cash-only. Several states cap deposits for good reason. Big cash up front funds the previous customer's job — or a disappearance.
- Pressure to sign today — a "discount" that dies at sunset exists to prevent comparison shopping.
- Offering to skip the permit. A pro willing to hide work from an inspector is telling you their plan for the parts you can't check either.
- No written contract, or one page of vagueness for a five-figure job.
- License "in a buddy's name" or insurance they'll "send later."
- Badmouthing every previous client and inspector. The common denominator in all their disputes is standing in your bathroom.
- Unreachable during the sales process. Communication only degrades after signing; the quoting phase is their best behavior.
What a protective contract contains
- Scope, itemized: every task, every material, specific fixture models or realistic written allowances
- Payment schedule tied to milestones (deposit, demo complete, rough-in inspection passed, tile complete, punch list done) — never to calendar dates alone
- Start date and substantial-completion date, with how delays are communicated
- Change-order process: written, priced, signed before the work happens
- Permits: who pulls them (the contractor) and that fees are included
- Lien waivers as suppliers and subs are paid, so a contractor's unpaid bill can't attach to your house
- Warranty terms in writing — duration, what's covered, who to call
- Site care: dust protection, daily cleanup, debris haul-away, bathroom access arrangements
Read it slowly, ask about anything fuzzy, and remember: a good contractor is proud of a thorough contract, because it protects them too. Resistance to paperwork is itself an answer.
After you sign: keep it healthy
Three habits keep a good hire good. Communicate through one channel (text or email) so decisions leave a trail. Do a five-minute end-of-day check-in — what happened, what's next, anything you need to decide. And never let payments run ahead of work; if you're ever asked to prepay deep into future milestones, pause and ask why. Almost every contractor horror story started with money moving faster than progress.
Want the vetting done for you?
Take the 60-second quiz and we'll match you with a licensed, insured, background-checked bathroom pro near you — the checklist above is our day job.
Start the bathroom quiz →Frequently asked questions
How many quotes should I get for a bathroom remodel?
Three is the working standard — enough to see the realistic price range and compare how each pro communicates. Get them itemized, over the same written scope, or they can't be compared. Be cautious with a bid far below the others.
How much deposit should a bathroom contractor ask for?
Commonly 10–30%, and several states cap deposits by law. Reasonable structure: a modest deposit, milestone payments tied to completed work, and a meaningful final payment — often 10–15% — held until the punch list is complete.
Should a bathroom contractor be licensed and insured?
Yes. Verify the license on your state board's website, and ask for certificates of general liability and workers' compensation sent directly from the insurer. Unlicensed plumbing or electrical work can void insurance claims and complicate resale.
What is the biggest red flag when hiring a bathroom contractor?
A shower quote that never mentions waterproofing. The membrane and pan are the parts you can't inspect after tile goes on, and they're where failed bathrooms fail. Close behind: large cash deposits, pressure to sign today, and offering to skip the permit.
What should a bathroom remodel contract include?
An itemized scope with specific materials or allowances, a milestone payment schedule, start and completion dates, a written change-order process, who pulls permits, lien waiver terms, a workmanship warranty, and cleanup and haul-away terms.
This guide is general consumer information, not legal advice. Licensing, deposit caps, and lien rules vary by state — check your state contractor board and, for large projects, consider having a professional review the contract.
