| Alabama | Alabama Licensing Board for General Contractors ↗
Alabama Home Builders Licensure Board ↗ | Guide |
| Alaska | Alaska Division of Corporations, Business and Professional Licensing (construction contractor registration) ↗ | Guide |
| Arizona | Arizona Registrar of Contractors ↗ | Guide |
| Arkansas | Arkansas Contractors Licensing Board ↗ | Guide |
| California | Contractors State License Board (CSLB) ↗ | Guide |
| Colorado | No statewide license in Colorado for this work. Your city or county licenses it. | Guide |
| Connecticut | Connecticut Department of Consumer Protection (home improvement registration) ↗ | Guide |
| Delaware | Delaware Division of Revenue (contractor business licence) ↗ | Guide |
| District of Columbia | DC Department of Licensing and Consumer Protection ↗ | Guide |
| Florida | Florida Construction Industry Licensing Board (DBPR) ↗ | Guide |
| Georgia | Georgia State Licensing Board for Residential and General Contractors ↗ | Guide |
| Hawaii | Hawaii Contractors License Board ↗ | Guide |
| Idaho | Idaho Division of Occupational and Professional Licenses (contractor registration) ↗ | Guide |
| Illinois | No statewide license in Illinois for this work. Your city or county licenses it. | Guide |
| Indiana | No statewide license in Indiana for this work. Your city or county licenses it. | Guide |
| Iowa | Iowa Division of Labor (contractor registration) ↗ | Guide |
| Kansas | No statewide license in Kansas for this work. Your city or county licenses it. | Guide |
| Kentucky | No statewide license in Kentucky for this work. Your city or county licenses it. | Guide |
| Louisiana | Louisiana State Licensing Board for Contractors ↗ | Guide |
| Maine | No statewide license in Maine for this work. Your city or county licenses it. | Guide |
| Maryland | Maryland Home Improvement Commission ↗ | Guide |
| Massachusetts | Massachusetts Office of Public Safety and Inspections (CSL) + home improvement contractor registration ↗ | Guide |
| Michigan | Michigan LARA Residential Builders and Maintenance & Alteration Contractors ↗ | Guide |
| Minnesota | Minnesota Department of Labor and Industry (residential building contractor) ↗ | Guide |
| Mississippi | Mississippi State Board of Contractors ↗ | Guide |
| Missouri | No statewide license in Missouri for this work. Your city or county licenses it. | Guide |
| Montana | Montana Department of Labor and Industry (construction contractor registration) ↗ | Guide |
| Nebraska | Nebraska Department of Labor (contractor registration) ↗ | Guide |
| Nevada | Nevada State Contractors Board ↗ | Guide |
| New Hampshire | No statewide license in New Hampshire for this work. Your city or county licenses it. | Guide |
| New Jersey | New Jersey Division of Consumer Affairs (home improvement contractor registration) ↗ | Guide |
| New Mexico | New Mexico Construction Industries Division ↗ | Guide |
| New York | No statewide license in New York for this work. Your city or county licenses it. | Guide |
| North Carolina | North Carolina Licensing Board for General Contractors ↗ | Guide |
| North Dakota | North Dakota Secretary of State (contractor licence) ↗ | Guide |
| Ohio | No statewide license in Ohio for this work. Your city or county licenses it. | Guide |
| Oklahoma | No statewide license in Oklahoma for this work. Your city or county licenses it. | Guide |
| Oregon | Oregon Construction Contractors Board ↗ | Guide |
| Pennsylvania | Pennsylvania Attorney General (home improvement contractor registration) ↗ | Guide |
| Rhode Island | Rhode Island Contractors' Registration and Licensing Board ↗ | Guide |
| South Carolina | South Carolina Contractors Licensing Board (LLR) + Residential Builders Commission ↗ | Guide |
| South Dakota | No statewide license in South Dakota for this work. Your city or county licenses it. | Guide |
| Tennessee | Tennessee Board for Licensing Contractors ↗ | Guide |
| Texas | No statewide license in Texas for this work. Your city or county licenses it. | Guide |
| Utah | Utah Division of Professional Licensing ↗ | Guide |
| Vermont | Vermont Office of Professional Regulation (residential contractor registration) ↗ | Guide |
| Virginia | Virginia Board for Contractors (DPOR) ↗ | Guide |
| Washington | Washington Department of Labor and Industries (contractor registration) ↗ | Guide |
| West Virginia | West Virginia Contractor Licensing Board ↗ | Guide |
| Wisconsin | Wisconsin Department of Safety and Professional Services (dwelling contractor) ↗ | Guide |
| Wyoming | No statewide license in Wyoming for this work. Your city or county licenses it. | Guide |