Why hiring a tile installer is not like hiring any other contractor

Tile installation looks straightforward. Set the tile. Grout. Done. But tile failures, particularly in wet areas, often trace back to decisions the installer made before any tile went down: substrate assessment, waterproofing system selection, setting material choice, and layout planning. A homeowner who picks a tile contractor primarily on price often ends up with a project that looks fine for 12 to 18 months before grout cracks, tiles pop, or a shower leak appears in the ceiling below.

This guide covers what to look for, what to ask, and what the quotes should include.

License verification first

In California, tile installation contractors who perform $500 or more in labor and materials on a single project are required to hold a C-54 (tile) or C-15 (flooring) contractor license issued by the California State License Board. The relevant license for tile setting is typically C-54 for decorative and structural tile, and C-15 for resilient and tile flooring more broadly.

Verify the license before signing anything. Go to cslb.ca.gov, enter the company name or license number, and confirm:

  • The license is active (not expired or suspended)
  • The license type covers tile work
  • The contractor is listed as the licensee, not an employee of a different company
  • Workers compensation is on file (required if the company has any employees)

An unlicensed tile contractor who causes damage has no bond or insurance coverage to make you whole. A cracked shower liner or flooded subfloor from unlicensed work is a problem the homeowner bears alone.

Set Tile SD connects homeowners with insured local tile crews. As a referral service, we match you with vetted crews rather than perform the work directly. Verify the license of any crew you work with at cslb.ca.gov before signing a contract.

What to ask when getting quotes

Get at least three quotes for any project over $1,500. When meeting with each contractor, ask:

On the scope:

  • What is the square footage you are quoting?
  • Is demo included or is that separate?
  • What setting material and waterproofing system will you use?
  • Will you do a flood test on the shower pan before tiling?

On the timeline:

  • How many days will this take?
  • Are you handling this job yourself or will a subcontractor be doing the work?
  • What is your start availability?

On the quote:

  • Is the tile cost included or is that separate?
  • Is grout and setting material included?
  • What happens if we find substrate damage during demo?

That last question matters. Substrate surprises are common in pre-1990 San Diego homes. A contractor who has no answer for how change orders are handled is a contractor who will either walk off the job or hit you with a large add-on after demo is complete.

What a good tile quote includes

A written quote (not a verbal number, a written one) should state:

  • Square footage
  • Tile material being set (product line or description)
  • Setting material system (thinset type, moisture barrier or membrane product)
  • Grout type and color
  • Whether demo is in scope
  • Whether haul-away of demo material is in scope
  • Payment schedule
  • Timeline in business days
  • Any exclusions (electrical, plumbing, painting around the tile)

A quote that says “tile installation: $2,400” with no other detail does not let you compare it fairly against a more detailed quote. Push for line items.

Reading the price spread between quotes

When one quote is 40% lower than the others on the same scope, find out why before deciding it is a deal. Common explanations:

  • The low bidder is using inferior setting materials (no polymer-modified thinset, no waterproofing membrane)
  • The low bidder has excluded demo, haul-away, or substrate prep from the scope
  • The low bidder is an unlicensed worker who cannot provide a license number when asked
  • The low bidder is significantly faster because they cut corners on layout, back-buttering, and cure times

None of these are good explanations. The correct approach is to ask the low bidder to explain their price against the others. Sometimes there is a legitimate explanation (they have a crew that works faster, or their tile supplier relationship gives them better material prices). Often the explanation reveals missing scope.

Red flags on a tile project

No written quote. Verbal agreements for tile work in San Diego create disputes. Do not proceed without paper.

Cannot provide license number. Ask before site visit, not after. “I do not have it memorized but I can get it to you” is acceptable. “I do not need a license for this” is not.

Pressures you to decide immediately. A contractor who needs a decision today before giving any other customer a chance to quote the job is managing a pipeline problem on their end, not prioritizing your project.

No discussion of substrate or waterproofing. Any experienced tile contractor assessing a bathroom remodel should ask about the existing backer, the waterproofing situation, and the condition of the shower pan. If the conversation is only about tile choice and color, the contractor is skipping the questions that matter most.

Proposes to tile over an existing shower without inspecting it first. Tiling over a failed shower liner is a documented path to another failure in two to five years. A contractor who proposes this without inspecting the existing substrate is either cutting corners or not experienced with failure modes.

What a referral service like Set Tile SD does differently

We connect you with experienced, insured tile crews in San Diego County, get you written quotes, and let you compare before committing. We work with crews who know the local substrate conditions, understand San Diego’s permitting requirements, and have a track record of projects in the county.

The tile installation you want is the one that still looks good in ten years. That starts with the right crew.

Call (858) 925-5546 to get matched with an insured local tile crew. For a sense of what different tile projects cost, see the tile installation cost guide. For bathroom projects specifically, see the shower and bath tile service.

Does a tile installer in San Diego need a license?

Yes. Any tile installation project over $500 in labor and materials requires the contractor to hold a valid California license, typically C-54 (tile) or C-15 (flooring). Verify the contractor’s license at cslb.ca.gov before signing any contract.

How many quotes should I get for a tile project?

At least three for any project over $1,500. Compare the written quotes on the same scope: square footage, materials included, waterproofing method, demo status, and timeline.

What should a tile installation quote include?

Square footage, tile material, setting system (thinset type and waterproofing product), grout specification, whether demo and haul-away are included, payment schedule, and timeline in business days. A quote without these details cannot be compared fairly to others.