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Contractor Licensing Resources - State By States Requirements

Find Your State Requirements:





Alabama needs a license for general contractors and subcontractors in the event the project price, including labor, is $50,000.00 for industrial and commercial projects, $10,000.00 for residential projects, and $5,000.00 for swimming pools.

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Alaska requires another license for residential and commercial contractors. Non-residential contractors are not required to take an exam, but residential contractors will need to finish the Alaska Craftsman Home Program or postsecondary course in Arctic technology, followed up by an Endorsement Application for Residential Construction.

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Arizona has different licenses for residential and commercial work and has dual licensing to pay both on a single license. Residential construction is described as homes, townhomes, condos, cooperative units, and apartments with four units or fewer. A license is essential to bid on tasks of $750.00 or longer.

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A homeowner in Arkansas does not require a license to perform the job himself or herself. But a builder (if used) must be licensed if the job, including material and labor, exceeds $2,000.00. 

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Generally speaking, California requires a license for jobs exceeding $500.00 whether on one project or multiple jobs at this amount.

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General contractors are not licensed by Colorado. Rather, they are licensed locally. Electrical and plumbing contractors, however, are licensed by the state. Contractors are required to get a business license, but not every contractor is required to get a contractor’s license. Local regulations should be checked.

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Connecticut contrasts between "major contractor" from "small contractor." A significant contractor is licensed to operate in institutional homes (care homes, jails, etc.), hotels/motels, multi-family homes, and other big sites. A small contractor is licensed to operate in private houses and small multi-family units. A license is necessary in case the job exceeds $200.00 for one job or if the annual job exceeds $1,000.00 total.

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Delaware requires a license for jobs exceeding $50,000.00. Digging water well and installing a pump needs another license in Delaware.

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Calculate house water pump costs using our Replacement Well Pump Cost Guide.


Florida has two license types: licensed and registered. A registered contractor is licensed to operate at the local level, though a certified contractor can take work anywhere in the state. 

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Georgia requires a license for work on detached single-family or two-family houses or single-family townhomes less than four stories tall, and also for projects exceeding $2,500.00. 

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Hawaii needs a licensed contractor for tasks exceeding $1,000.00 and requiring licenses. Electrical and plumbing licenses are required for tasks involving those particular trades. 

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Idaho does not license general contractors at the state level. However, electrical, HVAC, plumbing, well drillers, fire sprinkler systems, and public works contractors are licensed by the state. 

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Besides public works and roof, Illinois does not issue contractor licenses. Requirements have to be assessed at the local level.


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Indiana only licenses plumbers at the state level. All others should be assessed locally.

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Iowa state law is that all construction contractors be registered with the Iowa Division of labor only if their work will make $2,000.00 for this year.

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Kansas only licenses water well drillers and asbestos abatement contractors. 


Kentucky just licenses electrical, plumbing, and HVAC contractors. A homeowner can achieve his or her plumbing job with the proper licenses but for safety's sake HVAC and electrical need a licensed contractor. Kentucky has HVAC reciprocity with Ohio.

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Louisiana needs a building contractor be registered if construction work passes $75,000.00. Home improvement and repair contractor limits are between $7,500.00 and $75,000.00. If a repair or improvement passes this limit, the home improvement contractor must register as a building contractor.

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Maine only licenses plumbing, electrical, and asbestos abatement contractors. 

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Maryland licenses plumbers (including gas fitters), electricians, HVAC, and home improvement contractors. They must have an MHIC license.

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Massachusetts requires anyone supervising or performing construction work to be licensed.

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Michigan requires all contractors to be licensed.

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Any project exceeding $500.00 requires a contractor license.

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Missouri requires licensing only for work done in towns that exceed a population of 15,000



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Builders, plumbers, renovators, and HVAC contractors do not need licenses, but they do require registration if the contract exceeds $2,500.00. Electricians must be licensed with the Nebraska State Electrical Division. 

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Nevada requires all contractors have a license regardless of the contract.

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New Hampshire

New Hampshire only licenses asbestos and lead abatement contractors, plumbers, and electricians. 

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New Jersey

New Jersey home builders and home repair contractors must be recorded with the state. 

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New Mexico

All contractors in New Mexico must be licensed with the state regardless of the contract.

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New York

Asbestos abatement is the only contract work licensed at the state level in New York.

North Carolina

North Carolina requires a general contractor’s license for jobs costing $30,000.00 or more. 

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License search, plumbing, heating, fire sprinklers:

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North Dakota

North Dakota requires a license for any job costing $4,000.00 or more.

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General contractors are licensed at the local level.

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Oklahoma licenses plumbers, electricians, and mechanical (HVAC) contractors. General contractors are licensed at the local level.

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Oregon requires a license for anyone performing construction activity for compensation. 

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Pennsylvania only licenses asbestos and lead abatement contractors at the state level.

Licenses are researched at the local level.


Rhode Island

Rhode Island requires registration with the Contractor’s Registration Board for building, repairing, or remodeling 1- to 4-family residences. Electricians, plumbers, and HVAC contractors must be licensed.

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South Carolina

South Carolina requires a license for residential work totaling over $200.00.

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South Dakota

South Dakota only licenses plumbers, electricians, and asbestos abatement contractors. General contractors are licensed at the local level.

License search: electrical call 605-773-3573, plumbers call 605-773-3153


Tennessee requires a license for bidding on jobs exceeding $25,000.00, and on masonry work exceeding $100,000.00.

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Only specialty contractors, including HVAC, fire sprinkler systems, plumbing, and well drilling/pump installation specialists, need to be licensed in Texas.


Utah requires all contractors be licensed at the state level regardless of the size of the contract. There are over 50 classifications of licenses.

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Vermont licenses general contractors or home improvement contractors at the local level. Plumbing/HVAC and electrical contractors are licensed at the state level.

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Tradesman licenses are required for electrical, plumbing, HVAC, and all gas fitting. Construction contractors are licensed by the Virginia Board for Contractors at three levels:

  • Class A: Single contracts at $70,000.00 or more, or $500,000.00 in a single year.
  • Class B: Single contracts at $7,500.00 to less than $70,000.00, or $150,000.00 to less than $500,000.00 in a single year.
  • Class C: Single contracts at $1,000.00 to less than $7,500.00, or less than $150,000.00 in a single year.

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General and specialty contractors must be registered with the Washington State Department of Labor and Industries. Electricians must be licensed and plumbers certified.

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Washington DC

General contractors are not required to be licensed, but any subcontractors must be even if the general contractor is licensed. DC has project cost limits according to license class:

  • A – No limit
  • B – $10,000,000.00
  • C – $5,000,000.00
  • D – $2,000,000.00
  • E – $500,000.00

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West Virginia

All contractors and subcontractors must be licensed if the work performed is $2,500.00 or more. Plumbers and HVAC contractors must be certified.

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Plumber certification search:

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Plumbing, electrical, HVAC and building contractors must apply for a license at the state level. 

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Only electricians are licensed at the state level. 


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