All 50 States • 30 Trades
Contractor License
Requirements by State
Your complete guide to contractor licensing in all 50 states. Find fees, exams, insurance requirements, and step-by-step instructions for 30 trades.
Popular States
View all 50 states →Popular Trades
View all 30 trades →General Contractor
Oversee and manage construction projects from start to finish.
Electrician
Install, maintain, and repair electrical systems in buildings.
Plumber
Install and repair water supply lines, drainage, and fixtures.
HVAC Technician
Install and service heating, ventilation, and air conditioning systems.
Roofing Contractor
Install, repair, and replace roofing systems on buildings.
Painting Contractor
Apply paint, stains, and coatings to interior and exterior surfaces.
Why Use Contractor Licenses?
All 50 States
Complete licensing info for every state in the US.
30 Trade Types
From electricians to general contractors and everything in between.
Verified Data
Fees, exams, and requirements sourced from official state boards.
Understanding Contractor Licensing
Why Licensing Matters
Contractor licensing protects consumers, ensures work quality, and establishes professional standards. Licensed contractors have demonstrated their knowledge, experience, and financial responsibility. Working without a required license can result in fines, loss of lien rights, and even criminal penalties in some states.
State vs. Local Licensing
Licensing requirements vary dramatically by state. Some states like California and Florida license nearly every contractor specialty at the state level, while states like Texas and Pennsylvania rely on local jurisdictions. Even in states without state-level licensing, your city or county may require a local business license or contractor registration.
NASCLA Reciprocity
The National Association of State Contractors Licensing Agencies (NASCLA) offers an accredited exam accepted in 17 states. Passing the NASCLA exam can streamline the process of getting licensed in multiple states, as participating states will waive their trade-specific exam for NASCLA holders.
Common Requirements
Most states that license contractors require some combination of: work experience (typically 2-4 years), passing a trade and/or business exam, proof of insurance and bonding, and a background check. Fees, continuing education requirements, and renewal periods vary by state and trade.