Guides
How to verify a deck contractor from public records
How to verify a deck contractor before hiring: go to the records yourself, from the license lookup to the insurance agent call and the permit file.
What to take away
- Verify a deck contractor from the records, not the pitchthe license, the insurance and the permit history each have an outside holder you can contact yourself, and the contractor answers for the crew's training.
- Ask for the license number and check it with the official state licensing agency or local government registry before discussing price.
- Get a certificate of insurance, then call the agent named on it to confirm the policy is active.
- Pull the permit history at the building department. Unpermitted work becomes your problem later.
- Ask whether the crew has documented fall-protection training.
- Treat a missing record as a question to raise before you sign.
Four records, four lookups
A contractor's claims about being licensed, insured and permitted can be checked at a source outside the contractor's office. Training is the exception: the contractor holds that record, so you ask for it directly. The table shows who holds each record and what a clean answer looks like.
| Record | Who holds it | How you ask | A clean answer |
|---|---|---|---|
| License | State licensing agency or local registry | The official license lookup | The legal name and number on the estimate match |
| Insurance | The agent named on the certificate | A call, then a certificate emailed to you | Policy numbers, dates and limits are current |
| Permit and inspections | City or county building department | The property address, by phone or permit-record search | The permits and passed inspections the scope calls for |
| Fall-protection training | The contractor | A direct question about documented training | Documents the crew can show |
The license: name, number and statute
Match the legal name and number on the estimate to the official agency's record. Deck-contractor licensing is not handled by one U.S. agency, and rules and local registration requirements vary, so first find the agency for the state where the deck will be built.
California's Contractors State License Board (CSLB) maintains contractor license records under the Contractors State License Law (Cal. Bus. & Prof. Code § 7000 et seq.). Its check-a-license page lets you look up a contractor license or home improvement salesperson registration, including complaint disclosure.
Florida's Department of Business and Professional Regulation (DBPR) handles many construction-contractor licenses under the Construction Industry Licensing Act (Fla. Stat. ch. 489, pt. I), while Georgia's Secretary of State oversees residential and general contractor licensing under Ga. Code Ann. tit. 43, ch. 41.
Search the official agency's lookup, then check any county or city registration required where the deck will be built. If an exemption may apply, check the current statute or agency guidance for its scope and threshold.
A license tied to a different company name than the one on your contract is worth questioning before you sign. The red flags to check cover that pattern alongside permit and payment warning signs.
The insurance: ask the agent, not the contractor
A certificate of insurance is a one page summary, and summaries go stale. Ask the contractor's office to have the insurance agent email the certificate directly to you. Then call the agent listed and confirm that the policy numbers, dates, and limits are current.
The call is routine. Say you are reviewing a contract, because agents confirm active policies every day. How high the limits should be is a separate question, and the page on insurance costs and coverage covers that side for a deck and patio business.
The permit file: call the building department
Call the city or county building department, or use its official permit-record search, give the property address, and ask what permits exist and which inspections passed. Permits are public records in most jurisdictions, but there is no single national deck-permit database.
Compare that list with the scope the contractor describes. The department can tell you how to request records if they are not online. A permit inspection checklist shows what the department looks at on a deck.
Building codes are enforced through inspections, so an unpermitted deck has no record of footing, framing, or guardrail review. That gap often surfaces at resale. If the scope changes after signing, a change order form keeps the scope on paper next to the permit.
Fall-protection training: the record people forget
Ask whether the crew has documented fall-protection training. OSHA's construction rules generally require fall protection for employees exposed to falls of six feet or more; see 29 C.F.R. § 1926.501.
OSHA's fall protection training requirement in § 1926.503 says the employer shall provide a training program for each employee who might be exposed to fall hazards. A crew that follows a training and sign-off sequence can show you the paper on request.
When the contractor asks you to pull the permit
Ask who pulls the permit. If you are asked to file as an owner-builder, get the local building department's owner-builder permit application and ask which inspections and code obligations would become yours.
Requirements and liability differ by jurisdiction, so understand them before agreeing. The permit holder carries the inspections and code obligations that come with it, so the contract should say who that is. The pre-start compliance checks show what a contractor should already have in place.
When a record will not turn up
A missing record is a question to raise, not a verdict. Put each one to the contractor in writing before you sign, and keep the answers with the contract:
- Licenseno match under the name on the estimate. Ask which legal name holds the license and which agency issued it.
- Insurancethe agent cannot confirm the policy. Ask for a current certificate sent by the agent.
- Permitno record at the address. Ask the building department whether the scope needs a permit.
- Trainingno documents. Ask what fall-protection training the crew has had.
Common questions
Does every state license deck contractors?
No. Some states license residential contractors, some only register them, and some leave requirements to counties and cities. Search the official state licensing or registration agency, then check with the local building department about any local requirements. Treat a missing record as a question to raise.
What if the contractor says a permit is not needed?
Ask the building department directly for your address. Small repairs may be exempt, but new decks, footings, and guardrail changes usually need a permit and an inspection.
How do I confirm insurance without sounding suspicious?
Call the agent named on the certificate and say you are reviewing a contract. Agents confirm active policies every day, and the request is routine.
