How to vet a bathroom contractor
A bathroom remodel can go well or go very wrong. The difference is usually not the prettiest photo. It is whether you hire a licensed, insured, bonded remodeler who gives a clear scope, follows code, and does real waterproofing behind the tile.
What matters most before you hire
Bathroom work is not like painting a bedroom. There is water, drainage, ventilation, tile, and often hidden damage once walls or floors are opened. A nice-looking shower can still fail if the waterproofing behind the tile was skipped or done badly.
When you compare remodelers, look past the sales talk. The job is to reduce risk, not just find the lowest number.
Focus on these basics:
- License, insurance, and bond. Ask for the license number and proof of insurance. Then verify them yourself with your state or local agency and the insurer if needed.
- Bathroom-specific experience. A general handyman is not the same as a bathroom remodeler.
- Waterproofing method. Ask exactly what system they use behind shower tile, on floors, and around penetrations.
- Written scope and price. Get materials, labor, exclusions, and allowance amounts in writing before any deposit.
- Permits and code. Ask who handles permits and inspections. Follow local rules. Do not let anyone talk you into skipping them if they are required.
- Payment terms. Keep final payment until the punch list is done and the work matches the written scope.
If you are still at the planning stage, it helps to understand typical bathroom remodel ranges first at costs so you can spot numbers that seem unrealistically low.
How to check a remodeler the smart way
Use a short process. It saves time and helps you compare people fairly.
1. Start with three written estimates.
Ask each remodeler to price the same project. Same bathroom. Same goals. Same rough material level. If one bid includes demolition, waterproofing, permits, debris haul-away, and fixture install, but another does not, you are not comparing the same job.
2. Verify license and insurance yourself.
Do not stop at "yes, we are licensed." Ask for the legal business name, license number, and certificate of insurance. Check that the policy is current. Make sure workers' comp is in place where required.
3. Ask bathroom-specific questions.
Good questions include:
- Who is on site each day?
- Do you use employees, subcontractors, or both?
- What waterproofing system do you use in showers?
- How do you prep floors before tile?
- What happens if you find rot, mold, or bad framing?
- Who schedules inspections if permits are needed?
4. Review the scope line by line.
A clear scope should say what is being removed, installed, patched, tiled, painted, and hauled away. It should list fixture models or allowance amounts. If you are redoing the whole room, see what a full bathroom remodel usually includes so you know what to ask for.
5. Check recent reviews and recent jobs.
Look for patterns, not one perfect comment. Were timelines realistic? Was communication good? Did change orders make sense? If possible, ask for photos of projects from the last 6 to 12 months, not only old highlight shots.
6. Read the contract before you sign.
You want start and payment terms, scope, materials, exclusions, cleanup, permit responsibility, change-order process, and warranty language in plain writing.
The waterproofing questions that protect your money
This is where many homeowners get burned. Tile and grout are not the waterproof layer. They are the finish surface. The real protection is behind the tile.
Ask direct questions:
- What is the waterproofing system for the shower walls and pan?
- Is there a waterproof membrane behind or on top of the backer board?
- How are corners, niches, benches, and curbs sealed?
- How is the drain tied into the waterproof system?
- Will you flood test the shower pan if the system requires it?
A good remodeler should be able to explain the process simply. Not with vague answers like "we've always done it this way" or "the grout seals it."
Other details matter too:
- Slope: Shower floors need the right slope to drain.
- Subfloor condition: Soft or damaged floors can crack tile.
- Movement joints: Tile needs room for normal movement in the right places.
- Ventilation: A good fan helps control moisture after the remodel.
You do not need to become an installer. But you do need enough knowledge to spot weak answers. Read waterproofing explained before you sign with anyone. It is one of the best ways to avoid hidden leak problems.
Common red flags and expensive mistakes
Some warning signs are obvious. Some are subtle. Here are the big ones.
- A very low estimate. If one number is far below the rest, ask what is missing. Low bids often leave out waterproofing, prep, permits, or finish details.
- Pressure to sign today. Good remodelers stay busy, but high pressure is still a bad sign.
- No written scope. If it is not in writing, assume it is not included.
- Large deposit with vague terms. Get the payment schedule in writing. You choose who to hire, and you hold the final payment until the agreed work is completed.
- No permit when one is likely required. This can create trouble when you sell, insure, or inspect the home. Learn the basics at bathroom permits explained.
- Hand-waving about waterproofing. This is one of the costliest mistakes in bathroom work.
- Unclear change-order process. Hidden damage can happen. The right way is a written change order with added cost and scope before extra work starts.
- Poor communication early. If calls, texts, and paperwork are sloppy before the contract, that often gets worse during the job.
Typical bathroom remodel costs vary a lot. A minor refresh may run about $3,000 to $10,000. A mid-range remodel is often $10,000 to $25,000. A full gut can be $25,000 to $50,000+. A tub-to-shower conversion is often roughly $4,000 to $12,000. Porcelain floor tile installed is often around $8 to $25 per square foot. These are typical ranges, not quotes. Real price depends on the size of the bathroom, the scope of work, the tile and fixtures, hidden moisture or framing damage, and your area.
What to do next
If you are ready to move, keep it simple.
- Write down your project goals. What must change? Shower only? Tile floor? Full remodel?
- Save a few inspiration photos, but also note what matters more than looks: storage, cleaning, safety, ventilation, leaks.
- Decide what you want to keep and what you want to replace.
- Ask for three written estimates from licensed, insured, and bonded remodelers.
- Compare scope, waterproofing plan, timeline, permit handling, and payment terms. Not just price.
- Verify the license and insurance yourself.
- Get the final scope and price in writing before any deposit.
TileQuarter is a free matching service for homeowners. We help you describe your project and get matched with remodelers so you can compare quotes and choose who to hire. If you want to start, use get matched.
If your project is focused on a shower or tub, you may also want to review what is usually involved in shower and tub work before you compare estimates.
Get three written estimates, verify the remodeler’s license and insurance yourself, ask exactly how they will waterproof the shower, and do not sign until the scope, payment terms, and permit responsibility are in writing.