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If you're getting started as a contractor in Iowa, you may need to register or obtain a license. Iowa requires all construction contractors and businesses performing construction work to register with the Iowa Division of Labor if they earn at least $2,000 a year.

Additionally, plumbing, HVAC, and mechanical contractors have to get a license through the Mechanical Systems Board while electrical contractors must acquire a license from the Electrical Examining Board.

Fortunately, we've got all of the information about the Iowa contractor licensing process. Read on to learn how to get a license and why it could be important for protecting your payments.

How to get an Iowa contractor's license

Whether you need to get a license or simply register depends on the type of work you do. As mentioned, most construction contractors simply need to register their businesses, while plumbers, HVAC/R, mechanical, and electrical contractors need licenses.

Registering as a construction contractor

Any company engaged in construction work valued at over $2,000 a year needs to register its business with the . This includes subs and specialized contractors like roofers, drywallers, painters, finish carpenters, and the like.

To apply to the registry, construction contractors can . HVAC/R, sheet metal, mechanical professionals (including plumbers), and electrical contractors will have to use a different website and application system, which we'll cover below.

Note: As of 2023, Iowa Workforce Development launched the new mentioned above. All A&A accounts that end with "@IOWAID" are no longer active for Contractor Registration. For any issues, .

For everyone else registering through the Iowa Workforce Development portal, make sure you also have the other necessary items to register your business, including:

• A completed and signed application
• An Iowa unemployment insurance account number (create an account )
• A NAICS code (codes provided in the application)
• A $50 non-refundable check or money order or a notarized Fee Exemption Form (cash is not accepted)
• Workers' compensation documents (if applicable)
• A $25,000 contractor bond 

Once the application is complete, mail it into:

150 Des Moines Street
Des Moines, IA 50309-1836

Do keep in mind that processing can take up to 30 days. Depending on when you apply, the application and registration, as well as any applicable fees, will typically be $50 for registration or renewal.

Getting a license for mechanical, plumbing, and HVAC/R contractors

Iowa contractor licensing requirements state those working in the mechanical, plumbing, or HVAC/R field must carry a license as opposed to registration. This license is a function of the , which falls under the (IDPH)

To apply for a mechanical, plumbing, or HVAC/R license, the has all the information and forms you may need, including an online application.

General licensing requirements include:

• Applicant must be 18 years old
• Provide documentation of criminal conviction related to the plumbing or mechanical field
• Complete and submit an application (with fees)
• Meet Department of Labor bond and registration requirements (this application also covers registration)
• Provide a valid unemployment insurance number, even if you have no employees (create an account )
• Supply proof of permanent business address

Beyond those requirements, contractors applying for a license will also have to provide proof of a “Master of record,” which is a master-level license holder. This can be the applicant, the company owner, or someone the company employs.

Getting a license for electrical contractors

Iowa also requires electrical contractors to carry valid licenses. These are issued by the division of the .

Applicants looking to apply for a license can use to apply online.

To be eligible for this license, the company or applicant must be a Master Class A, B, or Residential Master license holder or employ someone who meets those requirements. You’ll also have to provide:

• Name of the responsible master electrician
• Name of the contractor who will hold the license
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• Mailing address
• Previously obtain registration with the Department of Labor
• Federal Tax ID number
• Certificate of liability insurance of at least $1,000,000

Penalties for unlicensed contracting in Iowa

In Iowa, unregistered contracting carries with it a $500 citation for the first time. After the first infraction, that fine can reach as much as $5,000 for subsequent violations.

Iowa mechanics lien law does not explicitly state that a license is required to file a mechanics lien. So, an unlicensed contractor could potentially file a mechanics lien. However, performing work that requires a license while not holding that license is never a good idea — and it might even work against you in court if you have to foreclose on a lien.

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