What is the difference between a licensed and unlicensed contractor?

A licensed contractor has met state-specific requirements including education, experience, exams, and background checks. They carry required insurance and bonds. An unlicensed contractor has met none of these requirements. Hiring an unlicensed contractor may void your homeowner's insurance, expose you to liability if a worker is injured, and leave you with no legal recourse for defective work.

Does a license guarantee quality work?

No. A license means the contractor met minimum standards at the time of licensing. Always check reviews, ask for references, and see past project photos. However, a licensed contractor provides legal protections that an unlicensed contractor does not.

What is a contractor bond and why does it matter?

A contractor bond (surety bond) is a three-party agreement between the contractor, a bonding company, and you. If the contractor fails to complete a job or causes damage, you can make a claim against the bond. Bonds typically have limits ($5K-$100K) — they are a baseline protection, not comprehensive coverage.

What is contractor liability insurance?

General liability insurance covers property damage and bodily injury caused by the contractor. Always ask for a Certificate of Insurance showing at least $500,000-$1,000,000 in general liability coverage.

What is workers compensation and why do I care?

Workers' compensation covers contractors and their employees if injured on your property. Without it, an injured worker could potentially sue you as the property owner. Always verify workers' comp coverage before work begins.

Can I hire an unlicensed contractor to save money?

The risks are significant: work may not pass inspection, homeowner's insurance may deny claims, you could be liable for injuries, and you have limited legal recourse. Where contractor licensing is required by law, hiring unlicensed is also illegal.

CA · contractor licensing · 20 trades tracked

California: 20/20 trades need a state license

Name: California Contractor Licensing Requirements
Creator: National Conference of State Legislatures (NCSL)
License: https://creativecommons.org/publicdomain/zero/1.0/

Open-data reference from California Contractors State License Board (CSLB). 100% of tracked construction trades carry a state-issued credential in this snapshot - verify live status on the board roster before you hire.

Compiled by PlainHireCheck · June 27, 2026

20/20
Trades licensed: 100%
Coverage share: 9
Exam mandates: #1
Strictness rank

California · broad-coverage lane (#2/51 by trades licensed)

California requires a state-issued license for 20 of 20 tracked trades (100%), making it among the broadest trade-licensing regimes in this corpus - #1 on the strictness ranking (score 9.5/10).

20
trades require a state license: 9
of those also mandate an exam: 4
also require a surety bond: 9.5/10
strictness score (rank listed above)

Source: state licensing boards · snapshot 2026-06-27. Specialty trades may still need credentials even where no statewide general contractor license exists.

California licensing coverage

According to California licensing-board records compiled with NCSL and NASCLA guidance, California marks 20 of 20 tracked trades as requiring a state license (100%), strictness rank #1 (9.5/10).

According to the same board-sourced directory (snapshot 2026-06-27), California runs a statewide licensing regime covering 20 of 20 specialty trades. Among those licensed trades, 9 also mandate an exam and 4 list a surety-bond requirement. Confirm the live board roster and classification before treating a directory row as current.

Consumer Protection Strength Score

How broadly California regulates the trades it licenses, from 3 of 3 tracked dimensions.

76 C

Trade licensing coverage 20 of 20 tracked trades licensed 100/100 · A
Surety bond coverage 4 of 20 licensed trades bonded 20/100 · F
Liability insurance coverage 20 of 20 licensed trades insured 100/100 · A

Each dimension is this state's own coverage rate over its tracked-trade universe (not a corpus percentile); a higher score means broader licensing coverage and more of those licensed trades requiring bonding/insurance.

Among 20 state-licensed trades

Exam required 9 trades (45%) No exam listed 11 trades (55%)

Source: State licensing boards As of 2026-06-27

100% of tracked trades carry a state credential

Source: California licensing board · NCSL

Source: State licensing boards As of 2026-06-27

National placement

Where California sits on trade-license coverage

California licenses 20 of 20 tracked trades (corpus rank #2 of 51 by trades licensed). Highlighted bar is this state among the densest peers in the published snapshot.

California

Counts are trades marked required in the PlainHireCheck matrix (snapshot 2026-06-27), not live board roster size. How coverage is counted.

How California balances strictness against consumer protection

A stricter licensing regime is not automatically a more consumer-protective one. California plotted against every other tracked state on both scores, median split at 8.5 strictness and 8.3 consumer-friendliness.

Median split: 8.5 strictness, 8.3 consumer-friendliness.

You are here: California.

Licensing Board

Board Name

California Contractors State License Board (CSLB)

Verify a Contractor License Visit Licensing Board File a Complaint

License Requirements by Trade

20 of 20 tracked trades require a license in California. Click any trade name to see full requirements details.

Trade	License	Exam	Bond	Insurance
Carpenter	✓	No	No	Yes
Demolition	✓	No	Yes	Yes
Electrician	✓	Yes	No	Yes
Elevator Mechanic	✓	Yes	No	Yes
Excavation	✓	No	No	Yes
Fire Protection	✓	Yes	No	Yes
Flooring Installer	✓	No	No	Yes
General Contractor	✓	Yes	Yes	Yes
Glazier	✓	No	No	Yes
HVAC Technician	✓	Yes	No	Yes
Insulation Installer	✓	No	No	Yes
Landscaper	✓	No	No	Yes
Mason	✓	No	No	Yes
Painter	✓	No	No	Yes
Pest Control	✓	Yes	No	Yes
Plumber	✓	Yes	No	Yes
Pool Contractor	✓	Yes	Yes	Yes
Roofer	✓	No	Yes	Yes
Solar Installer	✓	Yes	No	Yes
Tile Setter	✓	No	No	Yes

Licensed Trade Details

Carpenter

Carpentry Contractor License

Publisher	PlainHireCheck
Sources	Public state contractor licensing board records

Licensing Board

License Requirements by Trade

Licensed Trade Details

California barrier stack · broad-coverage lane

Quick Facts

Trade-Specific Requirements

Coverage peers

Nationwide states with similar coverage or strictness

Similar trade coverage

Similar strictness composite