Iowa contractor license requirements

Licenses and registrations

Construction Contractor Registration

Individuals and businesses doing construction work, including general contractors, remodelers, carpenters, roofers, painters and subcontractors. DIAL says carpenters, electricians, plumbers, roofers, painters and many others must register.

• When it applies: Required if you earn at least $2,000 a year from construction. Iowa Code 91C excludes anyone who earns less than two thousand dollars annually.
• Good to know: Each business with a separate federal ID number registers separately. Plumbing and mechanical contractors register through a joint registration and license application with the Plumbing and Mechanical Systems Board instead.

What you need to qualify

• Insurance: Proof of workers' compensation insurance if you have employees, with annual evidence of coverage.
• Bond: Out-of-state contractors must file a $25,000 surety bond on the department's form, or a Department of Transportation letter showing prequalification to bid on DOT projects.
• Business registration: A valid Iowa unemployment insurance account number is required for in-state and out-of-state contractors, even with no employees. A federal ID number (or Social Security number for individuals) and a NAICS code are also required.
• Also required: Self-employed contractors who pay no more than $2,000 per year to employ others, do not work with or for other contractors in the same phases of construction, and are not organized as an LLC, corporation or partnership may file a notarized fee exemption form instead of paying the fee.

Fees, renewal and continuing education

• Fees: $50 per year (non-refundable), or $150 for a three-year registration (481 IAC 465.4). Iowa Code 91C caps the fee at $50 per year.
• Renewal: Registration is renewed online through the DIAL portal, on a one-year or three-year term tied to the expiration date of the current registration. Out-of-state bonds stay in force until cancelled, so renewals do not need a new bond form.

Contracts and homeowner protections

For residential construction, the general contractor (or an owner-builder who hires subcontractors) must post a notice of commencement of work on the state Mechanics' Notice and Lien Registry no later than ten days after work begins (Iowa Code 572.13A). A general contractor who fails to post the notice is not entitled to a mechanic's lien.

Electrical, plumbing and HVAC work

Plumbing and mechanical (HVAC, refrigeration, sheet metal, hydronic) contractors are licensed by the Iowa Plumbing and Mechanical Systems Board within DIAL; contractor licenses require $500,000 public liability insurance and a $5,000 surety bond and run on a three-year cycle. Electricians are licensed by the Iowa Electrical Examining Board within DIAL.

Working without a license

Failing to register, renew or file a required bond can bring a written citation with an administrative penalty of not more than $500 for a first violation and not more than $5,000 per violation for a second or later violation. Contractors have 15 working days to contest. An unregistered contractor cannot be awarded a contract to perform work for the state or a state agency.

What to confirm with the state

We couldn't confirm these on an official page when we checked. Ask the licensing office before you rely on them:

• Local (city or county) contractor licensing in Iowa was not checked on official city pages.
• Whether the Electrical Examining Board issues a separate electrical contractor license (the DIAL page lists only individual electrician licenses).
• Iowa written home improvement contract requirements or deposit limits (none found on official pages).
• Insurance requirements beyond workers' compensation for general contractor registration (none stated).

Sources

1. Contractor Registration - Iowa DIAL
2. Register as a Contractor - Iowa DIAL
3. Iowa Code Chapter 91C, Construction Contractors (PDF)
4. 481 IAC Chapter 465, Construction Contractor Registration (PDF)
5. Contractor Registration information sheet (PDF) - dial.iowa.gov
6. Contractor License - Plumbing and Mechanical Systems Board, Iowa DIAL
7. Electrical Licensing - Iowa DIAL
8. Iowa Code 572.13A Notice of commencement of work (PDF)