Iowa Contractor License Lookup

Iowa requires construction contractors who earn at least $2,000 a year from construction to register with the state. Electricians, plumbers and HVAC contractors also need state licenses. Search contractors on the official site of the Iowa Department of Inspections, Appeals, and Licensing (DIAL), Contractor Registration, and see the rules for trades and the job price where each applies. Runs in your browser; nothing is stored.

Search Iowa Department of Inspections, Appeals, and Licensing (DIAL), Contractor Registration

Iowa rules checked against official sources on October 25, 2026.

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Labor and materials together, in dollars. Leave it blank to see the state's dollar limits.

Iowa: Remodel, repair or home improvement

  • This rule depends on the contractor's work over a whole year, not on one job's price. Credential: state contractor registration.

    A construction contractor that earns $2,000 or more a year from construction must register with Iowa DIAL. The floor is yearly construction income, not the size of one job. Source: Iowa Code 91C.1(1)(a); 91C.2

    Conditions and exceptions for this rule:

    • People who work only on their own real estate or property do not have to register.
    • Out-of-state contractors generally must file a $25,000 bond to register.

Look up a contractor on the official site

Search Iowa Department of Inspections, Appeals, and Licensing (DIAL), Contractor Registration

Search by business name, registration number, county, city or principal activity.

What to check on the board's record

  • The name or business on the record matches the name on your contract or estimate.
  • The status is active, not expired, suspended or revoked.
  • The license type or class covers your kind of job.
  • The license number in the contractor's ads and contract is the same one.

This summarises state rules from official sources. Only the board's own record can confirm one contractor's license. Checked October 25, 2026.

How Iowa licenses contractors

Iowa requires construction contractors who earn at least $2,000 a year from construction to register with the state. Electricians, plumbers and HVAC contractors also need state licenses. Iowa Code 91C.1, 91C.2

The state can cite a contractor that fails to register and impose penalties of up to $500 for a first violation and up to $5,000 for each later violation. Iowa Code 91C.8(2), (5)

Rules by type of work

Home improvement, new homes and roofing

  • state contractor registration: A construction contractor that earns $2,000 or more a year from construction must register with Iowa DIAL. The floor is yearly construction income, not the size of one job. Issued by Iowa Department of Inspections, Appeals, and Licensing (DIAL), Contractor Registration. Iowa Code 91C.1(1)(a); 91C.2
    • People who work only on their own real estate or property do not have to register.
    • Out-of-state contractors generally must file a $25,000 bond to register.

Electrical work

  • state electrical contractor license: Only a licensed electrical contractor may run a business doing new electrical installations or other regulated electrical work in Iowa. No dollar minimum is stated. Issued by Iowa Electrical Examining Board (DIAL). Iowa Code 103.8(1)

Plumbing and HVAC

  • state plumbing or mechanical (HVAC) license: Operating as a contractor or installing or repairing plumbing, mechanical or HVAC systems in Iowa requires a license from the Plumbing and Mechanical Systems Board, subject to the exceptions in Iowa Code 105.11. Issued by Iowa Plumbing and Mechanical Systems Board (DIAL). Iowa Code 105.10(1)

Where to look up contractors in Iowa

  • Iowa Department of Inspections, Appeals, and Licensing (DIAL), Contractor Registration: official license search. Search by business name, registration number, county, city or principal activity.
  • Iowa Electrical Examining Board (DIAL): official website
  • Iowa Plumbing and Mechanical Systems Board (DIAL): official website

On the record, check that the name matches your contract, the status is active (not expired, suspended or revoked), the license type covers your job, and the license number matches the one the contractor gave you.

What this tool does not do

  • It does not check any one contractor. Only the board's own record shows whether a license is active and what it covers.
  • It covers state rules. Cities and counties can add their own licenses and permits, and the tool cannot list every local rule.
  • It does not decide whether a contractor broke the law or what you can recover. For a dispute, contact the board or a lawyer.
  • It does not cover every specialty trade a state licenses (for example pest control, elevators or well drilling).

Frequently Asked Questions

How do I look up a contractor license in Iowa?

Use the official online license search from the Iowa Department of Inspections, Appeals, and Licensing (DIAL), Contractor Registration. Search by the contractor's name, business name or license number, and check that the status is active and the license type covers your job. Other state boards on this page: the Iowa Electrical Examining Board (DIAL) and the Iowa Plumbing and Mechanical Systems Board (DIAL).

Does Iowa require a contractor license?

A construction contractor that earns $2,000 or more a year from construction must register with Iowa DIAL. The floor is yearly construction income, not the size of one job.

Which trades need a state license in Iowa?

Electrical: state electrical contractor license from the Iowa Electrical Examining Board (DIAL). Plumbing: state plumbing or mechanical (HVAC) license from the Iowa Plumbing and Mechanical Systems Board (DIAL). HVAC: state plumbing or mechanical (HVAC) license from the Iowa Plumbing and Mechanical Systems Board (DIAL).

What happens if an Iowa contractor works without a required license?

The state can cite a contractor that fails to register and impose penalties of up to $500 for a first violation and up to $5,000 for each later violation.

Sources

Checked against official Iowa sources on October 25, 2026.

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