How to Choose a Roofing Contractor in California (Red Flags + Green Flags)

California has the strictest contractor licensing in the U.S. — the CSLB’s C-39 class for roofing requires written exams, $25k bond, ongoing insurance, and recurring continuing education. It also has the most aggressive concentration of storm-chaser contractors targeting California homeowners. Here’s how to separate the real roofers from the fly-by-night.

Step 1 — Verify the CSLB license

Every legal roofing contractor in California has an active CSLB license, typically classified C-39 (Roofing Contractor) or B (General Building Contractor). Look up the license at CSLB’s public CheckLicense system.

Things to verify on the license record:

• Status: ACTIVE. “Suspended” or “Expired” means they can’t legally pull permits right now.
• Classification includes C-39 (or B). Some contractors are licensed as C-36 (plumbing) or other classes and aren’t legally allowed to do roofing.
• Bond is in place. CSLB requires a $25,000 surety bond.
• Workers’ Comp insurance is on fileif the contractor has employees. If not, they’re a 1-person operation — fine for small jobs, risky on large jobs.
• Complaint history. CSLB shows any disclosed actions or recent complaints. 0 disclosed actions is the norm for a clean contractor.

For reference: TMC Roofing is C-39 #1103611 — active, bonded, insured, with workers’ comp on file.

Step 2 — Verify the manufacturer credentials

If a contractor claims GAF Master Elite, Owens Corning Platinum, CertainTeed SELECT ShingleMaster, or Eagle Authorized Installer, do the lookup directly with the manufacturer.

• GAF Master Elite: Search at gaf.com/en-us/roofing-contractors by city or business name. If the tier shows Master Elite, it’s legitimate. If they don’t appear at all, they don’t have the credential.
• Eagle Authorized Installer: Eagle publishes its authorized installer list on eagleroofing.com.

Why this matters: warranty registration. Master Elite is the only GAF tier that can register the Golden Pledge 25/50 warranty. Without Master Elite, the contractor cannot legally promise you Golden Pledge coverage. Full Master Elite explainer →

Step 3 — Verify the physical address

Every legitimate California roofer has a real California address — a registered office or yard, not a PO Box, not a corner of a Starbucks. Check:

• The address on the CSLB license record matches the address on their estimate, website, business cards.
• Google Maps shows the address as a real commercial location, not a residential home or a UPS Store mailbox.
• The phone number on the estimate matches the phone number on CSLB, on the BBB record, and on their Google Business Profile.

Storm-chaser red flag: address is in a different state. They’ll be gone in 6 months. Warranty calls die.

Step 4 — Check independent reviews

Look at all three:

• Google Reviews — Most volume, hardest to fake at scale.
• Yelp— Yelp’s filter is aggressive; a contractor with 10+ Yelp reviews has been around a while.
• BBB — Look at the actual complaint resolution record, not just the letter grade. The grade is partly pay-to-play; the resolved-vs-unresolved count is real signal.

Watch for: hundreds of 5-star reviews all posted in a 2-week window (paid review services). Look for the cadence — a steady stream of 4-5 star reviews across years is the pattern of a real long-running contractor.

Step 5 — Read the proposed contract

A legitimate roofing contract has:

• The contractor’s full legal name + CSLB license number on every page
• An itemized scope of work (not just “new roof — $XX,XXX”)
• Specific shingle product / tile profile / membrane SKU named
• Title 24 / CRRC compliance language for the rated product
• A published per-sheet decking replacement rate
• Warranty terms in writing
• Payment schedule (typically 10-30% deposit, milestone payments, final on completion)
• Three-day cancellation right notice (mandatory in CA)

Red flag: contract is <1 page, no itemization, asks for >50% upfront, no cancellation notice. Walk away.

Step 6 — Ask the 7 questions before signing

1. What’s your CSLB license number? Then verify it.
2. Are you GAF Master Elite (or equivalent for the manufacturer)? Then verify it.
3. What exact shingle/tile/membrane will you install (CRRC ID)? Title 24-compliant lines should be named explicitly.
4. What underlayment?If they say “felt” or won’t name it, you’re getting 15-lb felt — short life, weak in wind.
5. What’s your per-sheet decking replacement rate?If they don’t publish one, they’ll surprise you at install day.
6. Who files the Title 24 CF1R / CF2R?If they don’t know what those are, they don’t file them.
7. Who answers warranty calls in year 5?If they can’t name a person, the warranty’s a fiction.

Storm-chaser red flags (the “run away” list)

• Knocks on your door right after a storm
• Out-of-state phone number on the business card
• Offers to “inspect for free and waive your deductible” (insurance fraud — illegal in CA)
• Tries to start work the same day you sign
• Asks for cash payment
• Asks for the deposit before pulling the permit
• Can’t produce a CSLB license number on demand
• License number exists but the name on it doesn’t match the company
• Address on the contract is a PO Box or out-of-state
• Manufacturer credentials claimed but not verifiable in the manufacturer’s directory

Green flags (the “safe to hire” list)

• Active CSLB C-39 license with $25k bond + workers’ comp
• GAF Master Elite (or top-tier manufacturer credential), verifiable in the manufacturer’s directory
• Physical California address that matches across CSLB, BBB, Google
• 5+ years of online review history (not just a recent burst)
• Itemized contract with named products, CRRC IDs, and warranty terms
• Publishes per-sheet decking rate
• Files Title 24 CF1R / CF2R as standard
• Permit pulled before work starts, with the permit number on file
• References available (homeowners they worked for in the last 12 months)

Next step

Use the framework above on any contractor — including us. Verify TMC’s CSLB license, our GAF Master Elite status, and our physical address (1654 Illinois Ave, Unit 20, Perris, CA 92571). Then request a written estimate or call (951) 840-9935. We’ll quote the same way we’ve told you to evaluate the others — itemized, named products, published rates, no high-pressure callback.