How to Hire a Bathroom Contractor: 6 Questions + Red Flags

Transparency note: This guide contains no affiliate links. Renovation Guide HQ currently earns no commissions from any product or service mentioned — every figure is cited so you can verify it yourself. Licensing rules vary by state; this is general US guidance, not legal advice — check your state’s licensing board for your local requirements.

By Renovation Guide HQ · Updated October 8, 2026

Quick Answer: How Do You Hire a Good Bathroom Contractor?

Most bathroom remodels don’t go wrong because the homeowner picked a “bad” contractor. They go wrong because the homeowner never asked the questions that would have revealed the mismatch three weeks before demo. The fix isn’t finding a magically trustworthy contractor — it’s running a specific interview, in a specific order, that forces clarity on money, scope, and accountability before you sign anything. Below: the 6 questions that matter, the red flags that should send you walking, and what a fair contract and payment schedule actually look like in 2026.

Question 1: Are You Licensed — and Can I Verify It?

This is question one because everything else rests on it. In most states, a bathroom remodeler needs a general contractor license, a plumbing license, or both, depending on scope, per 2026 hiring guidance. Ask for the license number — then verify it yourself on your state’s licensing board website. Confirm it is active and in good standing, per licensing guidance.

What a good answer sounds like: the contractor gives you the license number immediately, tells you exactly which board issued it, and has no problem with you checking. What a bad answer sounds like: “I’ve been doing this 20 years, I don’t need a license,” or “my license is pending.” One nuance: a few states don’t license general contractors at all — Texas, for example, has no state general-contractor license, but regulates plumbing and electrical trades separately, per state-by-state guidance. In that case, ask which trade licenses apply to your project and verify those instead.

Question 2: What Insurance Do You Carry — and Is It Current?

Insurance is what protects your house and your savings if something goes wrong. Request proof of general liability insurance (minimum $1 million coverage is the commonly cited floor) and workers’ compensation if the contractor employs a crew, per insurance guidance. Bonding is a bonus — it protects you if the contractor abandons the job.

What a good answer sounds like: the contractor hands you a current certificate of insurance without hesitation. Go one step further: call the insurance carrier directly to confirm the policy is active. Contractors sometimes let policies lapse or hand out outdated certificates, per the same guidance — if they resist providing proof or the information doesn’t check out, move on.

Question 3: Can I Talk to Your Last Three Clients?

A reputable contractor should be happy to connect you with recent clients, per 2026 interview guidance. Ask for 2–3 references from the past 12 months, on projects similar in scope to yours — then actually call them. Don’t ask “were you happy?” Ask targeted questions:

• Did the project stay on budget and on schedule?
• How did the contractor handle surprises behind the walls?
• Was the work site clean and organized every day?
• Would you hire them again without hesitation?

What a good answer sounds like: specifics, volunteered without prompting — dates, dollar figures, names. What a bad answer sounds like: “Yeah, it was fine.” Hesitation and vague answers are yellow flags; a contractor who can’t produce any reachable references is a red flag, per scam-avoidance guidance.

Question 4: What Exactly Is Included in Your Estimate?

Not all estimates are created equal. Demand an itemized written estimate that separates fixed costs from allowances, per bathroom-specific guidance. A solid quote spells out: itemized labor and material costs, a clear scope description, permit fees (included or extra), cleanup, estimated start and completion dates, and allowances for fixtures, tile, and finishes you haven’t selected yet, per estimate checklists.

What a good answer sounds like: a multi-page breakdown where you can see exactly what the tile labor, plumbing, and fixtures each cost — detailed enough to compare line by line against other bids. What a bad answer sounds like: a one-page number with no detail. A vague estimate makes it easy to add “surprise” charges later, per contractor-scam guidance. Also ask the question most homeowners skip: what is NOT included? The answer to that question has prevented more budget blowups than any other single sentence in this guide.

Question 5: What Is the Payment Schedule — and What Triggers Each Payment?

Money is where remodels go wrong most often, so pin this down before signing. A normal deposit is 10–25% of the total, followed by progress-based installments, per 2026 guidance. Demands above 30% upfront are a red flag, per industry guidance — and some states cap deposits by law (Maryland, for example, limits upfront deposits to one-third of the contract price). The FTC is blunt: don’t pay the full amount upfront, and never make the final payment until the work is done and you’re satisfied.

What a good answer sounds like: payments tied to visible milestones — deposit at signing, a payment when materials are delivered, one at rough-in/inspection, one at fixture set, and a meaningful final payment (10% or more) held until the punch list is complete and you’ve done a final walkthrough. A practical example on a $15,000 midrange job (planning estimate): $2,250 deposit, $5,000 at rough-in approval, $6,250 at tile and fixture set, $1,500 final after punch list. What a bad answer sounds like: “I need half to get started” or any request for cash only — cash payments are untraceable, and cash-only is an FTC-listed scam tactic.

Question 6: What Warranty Do You Put in Writing?

Ask for a workmanship warranty of at least 5 years, in writing, per 2026 pre-hire checklists — separate from manufacturer warranties on fixtures and materials. The contract should state the warranty duration, exactly what it covers (labor defects, leaks from installed plumbing, tile failures), and how to make a claim.

What a good answer sounds like: a specific number of years, a written warranty document, and a clear claims process. What a bad answer sounds like: “I stand behind my work” with nothing on paper — or, at the other extreme, an exceptionally long guarantee that sounds too good to be true (the FTC flags those as a warning sign too). A warranty is only as good as the company behind it, which is why questions 1–3 come first.

8 Red Flags: When to Walk Away

Any one of these deserves a hard question; two or three together mean you walk away, per contractor-vetting guidance:

1. No license, or won’t show proof. The single biggest predictor of a bad outcome. Verify with the state board, not the contractor’s word.
2. No insurance, or expired certificates. If a worker gets hurt or a pipe bursts on an uninsured job, the liability can land on you.
3. Demands over 30% upfront, cash-only, or full payment before work starts. The FTC lists all three as scam tactics.
4. No written contract, or a vague one. No start/end dates, no payment milestones, no warranty terms, blank spaces left blank — the FTC says don’t sign until every field is complete.
5. High-pressure “sign today” tactics. “Special” demo-project pricing, today-only discounts, or storm-chaser door-knocking are pressure plays, not deals.
6. Tells you to pull the permits. Legitimate contractors obtain permits themselves. Asking the homeowner to do it is a classic sign of an unlicensed operator, per builder-association guidance. See our bathroom permit guide for what actually requires one.
7. Can’t provide reachable references. References that go to voicemail, or none at all, mean you can’t verify anything.
8. A bid dramatically lower than everyone else’s. Don’t automatically reject it — ask the contractor to walk you through why it’s low. A legitimate reason (bulk material buying, slow season) sounds very different from a vague one. Unexplained cheap usually means cut corners, thin materials, or change orders coming later.

Payment Schedules: What’s Normal vs. What’s Not

Structure beats percentage. Tie every payment to a visible milestone rather than calendar dates, per FTC guidance:

Payment	Normal trigger	Typical share
Deposit	Signed contract, materials ordered	10–25% (some states cap by law)
Progress 1	Demo complete, rough plumbing/electrical done	25–35% (planning estimate)
Progress 2	Inspections passed, tile and fixtures set	25–35% (planning estimate)
Final	Punch list complete, your walkthrough done	10%+ — never $0 remaining

Three rules that never bend: never pay the full amount upfront; never make the final payment until the work is done and you’re satisfied; and get a receipt for every payment, signed and dated. Change orders — the extra work that appears mid-project — must be documented in writing, approved, and priced before the work begins, per contract guidance. Verbal change orders are where budgets go to die.

The Contract Checklist: 9 Things It Must Contain

The FTC says don’t start work until you’ve reviewed and signed a written contract — even if your state doesn’t require one. Before you sign, confirm all of these are present, per the FTC’s contract checklist:

1. Contractor’s full legal name, address, phone number, and license number
2. Complete scope of work — no “TBD” on major line items
3. Material specifications: brand, grade, model where selected
4. Estimated start and completion dates
5. Total price with itemized breakdown
6. Payment schedule tied to milestones
7. Who pulls permits and who pays for them
8. Warranty duration and what it covers
9. Your right to cancel within 3 business days, if you signed at home or away from the contractor’s permanent place of business

Make sure all blank spaces are filled in and every promise made during the sales conversation appears in the text. If anything is vague, get it clarified in writing before you sign — after signing, the contract is the only version of the conversation that counts. If you’re unsure about any terms, consult an attorney or construction professional first, per hiring guidance.

How to Verify a License and Insurance (15 Minutes)

Verification is the step almost everyone skips — and the step that catches the most problems:

1. License: search your state’s contractor licensing board website (usually listed as your state name plus “contractor license lookup”). Enter the license number, confirm status is active and in good standing, and check for disciplinary actions. This is general US guidance — licensing categories and lookup portals differ by state, so start with your state’s official board.
2. Insurance: ask the contractor for a current certificate of insurance, then call the carrier listed on it to confirm the policy is active and covers your project dates.
3. Complaints: check the Better Business Bureau and your state or local consumer protection office for complaints, and search the company name with “scam,” “review,” or “complaint,” per FTC guidance.
4. Business legitimacy: confirm a physical business address (not just a PO box) and a working business phone — difficulty contacting the contractor during the sales process is usually the best the relationship will ever be, per vetting guidance.

Getting Quotes: How Many, and How to Compare Them

Get written estimates from at least three contractors, per comparison guidance — this is about understanding what you’re paying for, not finding the cheapest number. A contractor quoting $22,000 for a full gut is not comparable to one quoting $12,000 for fixture replacement alone, so normalize the scope first: give every bidder the same written scope, the same material allowances, and the same timeline expectations.

Compare line by line: labor, materials, disposal, permits, allowances, start date, timeline, payment schedule, warranty. If one quote is dramatically lower, ask why — and listen for specifics versus vagueness. Don’t automatically choose the lowest bidder, per the FTC. The right contractor is usually competitively priced, clearly documented, and responsive — not suspiciously cheap. For what the numbers should look like before you start comparing, see our 2026 bathroom remodel cost guide and our small bathroom cost guide.

5 Hiring Mistakes Homeowners Make

1. Hiring on price alone. The lowest bid wins the interview and loses the project. Experience, communication, and documentation are worth more than a 10% discount.
2. Skipping the reference calls. Collecting names isn’t vetting — calling them is. Ten minutes per reference is the highest-ROI time you’ll spend on the project.
3. Accepting a verbal “we’ll handle it.” Permits, change orders, warranty terms, cleanup — if it’s not in the contract, it doesn’t exist.
4. Paying too much too early. Once the contractor holds most of the money, your leverage is gone. Keep the final 10%+ in your hands until the punch list is done.
5. Not asking about the crew. Who is actually on site each day — employees or subcontractors? Who is your single point of contact? How do they protect the rest of your home from dust and debris? A contractor who can’t answer clearly hasn’t thought about your house, per interview guidance.

Four More Questions Worth Asking

The six questions above cover the essentials. These four — drawn from real hiring disputes — catch problems the basics miss.

1. How many bathrooms have you remodeled in the past year?

Bathroom work is a specialty. Waterproofing, tile setting, plumbing rough-ins, and ventilation all have failure modes that don’t exist in, say, deck building or drywall hanging. Why it matters: a generalist who does one bathroom a year is learning on your dime. Look for a contractor or crew that completes bathroom projects regularly — ask for photos of recent bathrooms specifically, not just kitchens or additions. Specialists spot problems faster (like a rotted subfloor or an undersized vent) and their subcontractors are usually the same trusted trades every time.

2. Who will actually do the work — you, your employees, or subcontractors?

Many “contractors” are really salespeople who subcontract everything. That’s not automatically bad, but you need to know. Ask who the day-to-day project lead is, whether the subs are long-term partners or day labor, and who supervises quality. Why it matters: accountability disappears when work passes through three layers. You want one name on the contract who is responsible for the finished bathroom, and you want to meet the person who will be in your house every morning — before demolition starts, not after.

3. How do you handle change orders?

Change orders — written amendments for work outside the original scope — are where budgets die. Ask: Who can authorize a change? Must it be in writing with a price before work starts? How quickly do you price them? Why it matters: in bathroom remodels, surprises are normal (hidden water damage, outdated wiring behind the wall). Without a written change-order process, a $500 fix becomes a $2,000 argument. The right answer: “Every change gets a written price, you sign it, and then we do the work.” Anything verbal is a no.

4. What is the realistic timeline — start date, duration, and daily schedule?

Ask for a start date in writing, an estimated completion date, and the daily working hours. Also ask what happens if the project runs long: is there a penalty clause, or at least a communication protocol? Why it matters: a standard full bathroom remodel typically takes three to six weeks of active work once materials are on site, but contractor schedules slip. A contractor who is “starting three jobs next Monday” is overbooked. You want a crew that will be at your house consistently — not one that vanishes for a week to finish someone else’s kitchen.

Hiring a Bathroom Contractor FAQ

How many quotes should I get for a bathroom remodel?

At least three written, itemized quotes, per comparison guidance. Give every bidder the same scope so the numbers are comparable, then compare line by line — labor, materials, permits, allowances, timeline, payment schedule, warranty. The goal is understanding what you’re paying for, not finding the cheapest number; don’t automatically choose the lowest bidder, per the FTC.

How much should I pay a contractor upfront?

A normal deposit is 10–25% of the total project cost, per 2026 guidance. Demands above 30% are a red flag, and some states cap deposits by law — Maryland, for example, limits upfront deposits to one-third of the contract price. Never pay the full amount upfront, and never make the final payment until the work is done and you’re satisfied, per the FTC.

How do I check if a contractor is licensed and insured?

Search your state’s contractor licensing board website for the license number and confirm it’s active and in good standing — this is general US guidance; boards and categories differ by state. For insurance, get a current certificate from the contractor and call the carrier directly to confirm coverage is active. Also check the BBB and your state consumer protection office for complaints, per FTC guidance.

What should a bathroom remodeling contract include?

The contractor’s legal name, address, phone, and license number; complete scope of work; material specifications; start and completion dates; itemized total price; milestone-based payment schedule; who pulls permits; warranty terms; and your 3-day cancellation right if you signed at home. The FTC says don’t start work until you’ve reviewed and signed it, and make sure no blank spaces are left blank.

What are the biggest red flags when hiring a contractor?

No verifiable license or insurance; demands over 30% upfront, cash-only, or full payment before work; no written contract; “sign today” pressure tactics; telling you to pull the permits yourself; unreachable references; and a bid far below everyone else’s with no clear explanation. Two or three of these together mean walk away, per vetting guidance.

Should the contractor or I pull the building permits?

The contractor — always. Legitimate contractors obtain required permits themselves; asking the homeowner to pull them is a classic sign of an unlicensed operator, per builder-association guidance and the FTC. Our bathroom permit guide covers what needs a permit, what it costs, and how the inspection sequence works — and our remodel steps guide shows where permits sit in the project timeline.

What should I do if the contractor asks me to pull the permit?

Decline, and reconsider the hire. The contractor should pull permits under their own license — that’s part of what you’re paying for. Homeowner-pulled permits make you legally responsible for code compliance, and some jurisdictions won’t even let an unlicensed person pull trade permits. A contractor who pushes permitting onto you may be unlicensed, uninsured, or planning to skip inspections.

The Bottom Line

Hire the contractor whose paperwork is cleanest, not whose price is lowest. Verify the license with the state board, confirm insurance with the carrier, call three references, and get three itemized quotes on the same scope. Pay 10–25% down, tie every payment to a visible milestone, hold 10%+ until the punch list is done, and sign nothing until the contract contains the scope, dates, price, payment schedule, permits, and warranty in writing. Do that, and the most dangerous part of your bathroom remodel — the hiring — is already handled. For the project itself, our 2026 bathroom remodel cost guide, remodel steps guide, and tub-to-shower conversion guide cover the rest.

How We Estimated These Costs

Guidance in this article comes from published 2026 sources: the FTC’s home improvement scam guidance (contract requirements, red flags, payment rules), the Greater Houston Builders Association’s contractor vetting guide, This Old House’s contractor hiring tips, HomeLight’s contractor comparison guidance, 2026 bathroom-contractor interview guidance, contractor scam red-flag guidance, 2026 contractor interview questions, and state-by-state hiring guidance. Deposit and payment figures reflect published 2026 norms; the $15,000 milestone example is labeled “(planning estimate)” as an illustration, not a quote from any source. Licensing rules vary by state — always verify with your state’s licensing board. Last updated October 2026.

Related guide: Before you sign a contract, compare the quotes against the typical ranges in our bathroom remodel cost guide so you know what a fair price looks like.