In California, roofing is licensed by the Contractors State License Board under the C-39 classification. A roofer in San Diego should be able to give a licence number on the phone, and the homeowner can check that number on the board's own website. A C-39 roofer must also carry workers' compensation coverage even with no employees, so the certificate is the second document to ask for.
Key takeaways
- Roofing in California is the C-39 classification from the Contractors State License Board.
- The licence number should be given on the phone and checked on the board's website before a deposit is paid.
- A C-39 roofer must carry workers' compensation coverage even with no employees, according to the board's 2018 newsletter.
- A 2022 board bulletin on SB 216 says all active contractors need a valid certificate by 1 January 2026.
- A licence check confirms permission to work; it does not confirm the quality of the work, which the scope and the inspection must do.
What is the C-39 classification?
C-39 is the roofing classification of the California Contractors State License Board. A roofer who puts a roof on a house in San Diego is expected to hold it, or to work for a firm that does.
The classification is named in the board's bulletins from 2018 to 2022. A licence is a permission to do a particular kind of work, and it is issued by the state rather than by a city. The same licence applies in every part of the state, including San Diego.
A licence is not a guarantee of quality. It shows the roofer has been through the board's process. The homeowner still needs the scope, the inspection and the warranty terms in writing.
How do you check the number?
Ask for the number, then look it up on the board's website. The record shows the licence status and the classification, and the check is made before any deposit is paid.
The check takes a few minutes. Write down the number, the name on the licence and the date you checked. If the record shows a different name, a different classification or an inactive status, do not sign until the difference is explained.
The number is also a test of the roofer's readiness. A roofer who cannot give a number on the phone, or who is evasive about it, should be asked for the number in writing before any visit.
- Ask for the licence number and the name on the licence
- Check the number on the board's website and note the date
- Confirm the classification is C-39 for the roof work
- Confirm the licence is active on the date you check it
- Keep the record with the scope
Why does a C-39 roofer need workers' compensation cover?
A C-39 roofer must carry workers' compensation coverage even with no employees. The board's 2018 newsletter says so directly, and the certificate is the document that shows it.
A roof is a steep, slippery and high place to work, and an injury there is serious. A roofer without a certificate leaves the injured worker, and sometimes the property owner, without the cover the law expects.
The 2022 board bulletin on SB 216 says all active contractors need a valid certificate by 1 January 2026. The homeowner can ask for the current certificate and check its dates against the job, so the cover is in force while the work is done.
What else should be asked before work starts?
The licence and the certificate are the first two documents. The scope, the warranty terms and the contact for the job come next, and all of them should be in writing.
The scope names each line of the work, the materials and the method. The warranty terms, whether from the manufacturer or from the company's own workmanship promise, are read and kept, and the company's contact for the job is written down.
The owner also asks how a worker's injury would be reported and who the insurer contacts if the crew damages a neighbor's property. Those answers belong in the file with the licence.
What do third-party guides say, and what is confirmed?
Third-party guides list exams, fingerprinting, a bond and experience requirements for the C-39 classification. Those details are not confirmed on the board's website in this guide, so none are published here.
A homeowner who wants those details should check the board's own website, which is the source for the requirements. Guides from other sites can be out of date, and a figure from one of them should not be relied on without a check.
This site does not publish a bond amount or an exam list for the classification. The question to ask a roofer is whether the licence is active and the certificate is current, and both can be checked directly.
What should be checked on the licence record itself?
The record shows the name, the number, the classification and the status. Each one should match what the roofer has said, and the date of the check should be written beside them.
The name on the record should match the business that will sign the contract. A licence held by one person and a contract signed by another company is a mismatch that should be explained before any work begins.
The status should be active on the day of the check. A licence that was active last month may have changed, so a check made before signing is a check made on the right date, and a second check is worth making if the work is delayed for weeks.
How does the licence check fit with the scope?
The licence check and the written scope belong together. The licence shows who may do the work, and the scope shows what the work is. A signed scope is the reference for any later question about what was promised.
A roofer whose licence is confirmed should be willing to put the scope in writing with the licence number on it. A roofer who resists a written scope has given the owner a reason to look elsewhere, and this site says so plainly.
The scope names the roofer's crew lead or the person on site. The owner can then ask that person about the work, and the answer is recorded in the file.
What if the roofer uses a subcontractor?
A roofer may bring in a subcontractor for part of the work, and the owner should know who that is before the crew arrives. The subcontractor's own licence and certificate are asked for in the same way.
A subcontractor doing roof work needs a licence of its own, and a crew working on a roof needs the cover that applies to its members. The owner asks for the names and the licence numbers of anyone working on the roof, and writes them in the file.
If a subcontractor is brought in after the scope is signed, the change is written as a change order and the new licence and certificate are checked before that person steps onto the roof.
What goes in the file, and how long should it be kept?
The file holds the licence record, the certificate, the signed scope, the photographs, the change orders and the final notes. It is kept with the property papers, since any later repair, sale or claim will ask for it.
A short index at the front of the file lists each document and its date. The index makes a later question quick to answer, and it shows at a glance whether any document is missing.
How long to keep the file is a decision for the owner, but a file kept for the life of the roof is the most useful. The licence record and the certificate are checked again if the owner has a new roofer for a later job, since neither is a permanent record of the roofer's standing.
What if a question remains after the check?
A question that remains after the licence check is put to the roofer in writing and to the board if it concerns the licence. The board's website explains the complaint process for a licensed contractor.
The owner can keep the question in writing and ask for a written reply. A reply that avoids the question is useful information in itself, and it belongs in the file.
Where the question concerns the licence itself, the board is the right place to take it. This guide does not state the board's complaint steps in detail, since the board's own website is the source for them.
What does a C-39 classification cover on a roof?
The C-39 classification covers roofing work. The scope names the roof work being done, and the roofer should be able to show that the work falls within the classification.
A roof job can include flashing, gutter work and attic ventilation, and the scope names each. The roofer should be able to explain how each line falls within the roofing work the classification covers, and any line that falls outside it should be named and handled by a licensed trade.
An owner who is unsure whether a line falls within the classification can ask in writing before the work begins. The answer belongs in the file alongside the scope.
What should a homeowner do if the licence is not confirmed?
Do not sign a contract or pay a deposit until the licence is confirmed. A roofer who cannot confirm the licence should be asked to explain in writing, and the owner should look for a roofer whose licence can be checked.
A deposit paid to an unlicensed roofer may be hard to recover, and the work may be left unfinished. The owner should not rely on a promise to produce the licence later, since the check is simple and should be made first.
A call to (833) 751-2102 is a way to start the conversation about the roof. The line can explain the process, but the homeowner should check the licence for the roofer who will actually do the work.
How often should the licence be rechecked on a long job?
A licence should be checked again when a job runs for many weeks or when the crew changes. A check at the start is necessary, but it does not cover a licence that lapses in the middle of the work.
A long roof job, such as a phased re-roof of a multi-unit building, may run for several weeks. The owner notes the licence number in the schedule and checks it again at the midpoint, and before the final payment is made.
A change of crew lead, a new subcontractor or a change in the company name is a reason for a fresh check, even if the job has been running for some time. The check is written into the file with the date it was made.
Frequently asked questions
Can I check the licence myself?
Yes. The board's website shows the licence status and the classification for the number the roofer gives.
Do I need the certificate if the roofer has no employees?
Yes. A C-39 roofer must carry workers' compensation coverage even with no employees, according to the board's 2018 newsletter.
What should I do if the licence is inactive?
Do not sign. Ask the roofer to explain the status in writing, and call (833) 751-2102 if you need the work scheduled with a roofer whose licence is confirmed.
Sources
- California Contractors State License Board
- California Contractors State License Board newsletter and industry bulletins, 2018 to 2022
This guide is general information for San Diego County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.