Obtain Your License

Pursuing a career in the Plumbing field? Study at home for your Iowa Plumbing license exam with our fully online, user-friendly, and self-paced course.

  • State Licensed Contractor Application Processing

    Iowa Application Processing


    @HomePrep Application Processing is here to ensure your application to become a state licensed contractor gets filled out correctly and promptly. We provide a professional service ensuring your privacy and comfort throughout the entire process. Following your purchase of the Iowa Application Processing our AP Coordinator will contact you to discuss the next steps. If you have any questions please call us at 800-952-0910. We look forward to working with you.

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  • Iowa Plumbing License – Books Only Package


    As of this time we do not offer any courses for this exam. We do offer all the required books for this exam here in one complete package. Individual books can be found in our bookstore. Please be sure to check back in the future for possible course material, as we are always adding to our course catalog.

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Requirements To Complete

About This License

“Apprentice” means any person, other than a helper, journeyperson, or master, who, as a principal occupation, is engaged in working as an employee of a plumbing contractor under the supervision of either a master or a journeyperson and is progressing toward completion of an apprenticeship training program registered by the office of apprenticeship of the United States department of labor while learning and assisting in the design, installation, and repair of plumbing.

“Journeyperson” means any person, other than a master, who, as a principal occupation, is engaged as an employee of, or otherwise working under the direction of, a master in the design, installation, and repair of plumbing.

“Master” means any person who works in the planning or superintending of the design, installation, or repair of plumbing, and is otherwise lawfully qualified to conduct the business of plumbing and who is familiar with the laws and rules governing the plumbing.

Requirements to Obtaining Your License

  • If you earn at $2,000 a year, you must also be registered as a Contractor.
  • Pre-approval is required to sit for the exams.
  • Must be at least 18 and submit an application with appropriate fees to the state.
  • Masters and Journeypersons must pass the appropriate exam.

Applying For Your License

To apply for a license, please contact the Iowa Plumbing and Mechanical Systems Board at 515-281-7689. Licenses are good for 2 years and the fees are as follows:

  • Apprentice: $50
  • Journeyperson: $100
  • Master: $250

Exam Details

  • The exams are open book.
  • The master exam has 125 questions and a time limit of 5 hours. 75% to pass.
  • The journeyperson exam has 75 questions and a time limit of 3 hours.
  • To schedule your exams, contact Kirkwood Community College at 319-398-7768
  • Exam Fees- Masters $95, Journeyman $95

Books and References for the Exam

The following references are permitted to be taken into the examination. These references may be tabbed (with a permanent index tab) and highlighted. They are available for purchase from our online contractor’s bookstore or by calling our office at 1-800-952-0910.

Exam Review Education

As of this time, we offer review for this exam by online practice tests. Each time you take a test, the questions are randomly generated from our database. To order, click the Buy Now link below or call 800-952-0910.

Continuing Education

A holder of a single trade must complete 8 hours of CEU per 3 years. Holder’s of multiple trades (e.g. plumbing and hvac) must complete 14 or 16 hours of CEU per 2 years, depending on the trades.

Reciprocity Agreement

As of this time, there are no reciprocal agreements in place.

How It Works


Obtain pre-approval from the state (if applicable).


Purchase Exam Prep materials.


Schedule and pass your state exams.


Submit to the state your application, licensing fee, and proof of insurance.