Hiring a Roofer in California: Licenses, Materials, Permits and Contracts
Updated October 23, 2026 · General information, not legal or professional advice.
A roof replacement is one of the largest maintenance projects most homeowners face, and it is also a project where storm-chasing and door-to-door sales are common. This guide explains how to hire a qualified roofer in California, what the state requires, and how to protect yourself through the bid, contract and inspection process. It is general information, not legal advice.
Start with the right license
In California, roofing work generally requires a contractor license from the Contractors State License Board (CSLB) unless the job is below the small-job threshold set by state law, which almost no roof replacement is. The specialty license for roofing is the C-39 Roofing classification. A B (general building) contractor can also perform roofing as part of a larger project involving multiple trades, but for a stand-alone reroof most homeowners hire a C-39.
Check the license number on CSLB's website before you meet anyone for an estimate. Confirm the status is active, the business name matches, the C-39 classification is listed, and workers' compensation coverage is in place if the company has employees. Roofing is one of the trades CSLB singles out for workers' comp requirements, because injury risk is high. Our license check guide explains each part of the record.
Repair or replace?
A good roofer will inspect the roof, attic and flashing before recommending repair or replacement. Ask what they saw, and request photos. Signs that replacement may be needed include widespread cracked or curling shingles, many missing tiles, soft spots in the deck, repeated leaks in different places, and an underlayment at the end of its life (under tile roofs, the underlayment often fails before the tiles). If one contractor recommends replacement and another says a repair will work, ask each to explain why.
Roofing materials common in California
- Asphalt (composition) shingles: the most common choice for many homes.
- Concrete and clay tile: common across Southern and Central California; heavy, so the structure must support them.
- Metal: durable and increasingly popular in fire-prone areas.
- Low-slope membranes: such as single-ply or modified bitumen, used on flat or nearly flat sections.
Ask about the underlayment, ventilation, flashing and drip edge as well as the visible material. These hidden parts often decide how long a roof lasts.
Permits, cool roofs and fire zones
Most California building departments require a permit for a reroof, and the work must pass inspection. Ask who will pull the permit (the contractor usually does) and make sure inspections are completed and the permit is finaled.
Cool roof requirements. California's Title 24 energy standards include cool roof requirements for some residential reroofs in certain climate zones. Requirements depend on climate zone, roof slope and how much of the roof is replaced. The California Energy Commission publishes the rules; your roofer should know which apply.
Fire hazard severity zones. If your home is in a CAL FIRE-mapped fire hazard severity zone, reroofing generally must meet the class of fire-rated roof covering required by the California Building Code for that zone, often Class A. Ember-resistant vents and other details may also apply. Check your address on the Office of the State Fire Marshal map.
Getting and comparing bids
- Get at least three written bids from licensed C-39 contractors.
- Make sure each bid covers tear-off and disposal, deck repair (and how it will be priced if needed), underlayment type, flashing, vents, gutters if affected, permits and cleanup.
- Ask about the manufacturer's warranty and the contractor's workmanship warranty, and get both in writing. Manufacturer warranties often require installation by certified installers and registration after the job.
- Ask how they protect landscaping, solar panels, skylights and the inside of the attic during tear-off.
- Ask who will be on site each day and how you can reach the person in charge.
Watch out for storm chasers and pressure tactics
After wind events and wildfires, out-of-area crews sometimes go door to door. Be cautious if someone offers an unsolicited "free inspection," pressures you to sign the same day, offers to cover your insurance deductible, or asks for a large payment before materials arrive. California makes it a felony to contract without a license in a declared disaster area. Read our full list of contractor red flags.
Contracts and payments
California home improvement contracts must be in writing and include specific information and notices, including a payment schedule and your right to cancel (three business days for many in-home sales, five for homeowners aged 65 and older). State law limits the size of the down payment; CSLB's consumer pages explain the current rule. Tie progress payments to completed stages such as tear-off, dry-in and final, and get lien releases as you pay. See our step-by-step hiring guide for more on contracts.
Insurance claims
If the roof was damaged in a covered event, call your insurer and review the adjuster's estimate yourself. The California Department of Insurance offers consumer help with claims. You choose the contractor; a roofer cannot negotiate your claim as if they were a licensed public adjuster.
During and after the job
- Expect noise and debris; move cars and cover items in the attic.
- Ask for photos of the deck and underlayment before the finish layer goes on.
- Confirm the final inspection passed and get a copy of the finaled permit.
- Keep warranty documents, the contract, invoices and lien releases together.
Find a roofer
Browse licensed roofing contractors in Ventura, Oxnard, Santa Barbara, Santa Maria, Paso Robles and nearby cities, or use the form on this page to describe your roof.
Roofing questions homeowners ask
Can a new roof go over the old one? Building codes limit overlays; for example, an overlay may not be allowed if there are already multiple layers or if the existing roof is damaged or water-soaked, and tile roofs are rarely overlaid. A tear-off also lets the roofer inspect and repair the deck. Ask your building department and roofer what applies to your home.
What about solar panels? If you have rooftop solar, the panels usually need to be removed and reinstalled during a reroof. Ask whether the roofer coordinates this with a licensed solar or electrical contractor (C-46 or C-10), and who is responsible for the solar warranty.
When is the best time to reroof? Most California roofers prefer dry months, and schedules fill quickly before the rainy season. If you suspect problems, get inspections in late summer or early fall.
How do I know the work passed? Ask for the permit number and check its status with your building department after the final inspection.
Maintaining your new roof
Keep gutters and valleys clear of leaves and pine needles, especially in fire hazard areas where debris can catch embers. Trim branches away from the roof. Have the roof and flashing checked after major storms. Avoid walking on tile roofs, which crack easily. Keep a copy of the warranty and the roofer's contact information with your house records.
Finally, remember that a roof is a system. Gutters, downspouts, attic ventilation and the condition of fascia boards all affect how long a new roof performs, so ask the roofer to note any problems with these parts in writing even if they are outside the contract scope.
Official sources: CSLB; California Energy Commission; Office of the State Fire Marshal; California Department of Insurance.
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