Iowa § 105.10 - 105.10 License or certification required — exceptions.
Full text of Iowa Iowa Code § 105.10 — 105.10 License or certification required — exceptions., with citation guidance and answers to common questions.
§ 105.10. 105.10 License or certification required — exceptions.
1. Except as provided in section 105.11, a person shall not operate as a contractor or install or repair plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic systems without obtaining a license issued by the board, or install or repair medical gas piping systems without obtaining a valid certification approved by the board. 2. Except as provided in section 105.11, a person shall not engage in the business of designing, installing, or repairing plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic systems unless at all times a licensed master, who shall be responsible for the proper designing, installing, and repairing of the plumbing, HVAC, refrigeration, sheet metal, or hydronic system, is employed by the person and is actively in charge of the plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic work of the person. An individual who performs such work pursuant to a business operated as a sole proprietorship shall be a licensed master in the applicable discipline. 3. An individual holding a master mechanical license shall not be required to get an HVAC-refrigeration, sheet metal, or hydronic license in order to design, install, or repair the work defined in this chapter as mechanical, HVAC-refrigeration, sheet metal, or hydronic work. An individual holding a journeyperson mechanical license shall not be required to get an HVAC-refrigeration, sheet metal, or hydronic license in order to install and repair the work defined in this chapter as mechanical, HVAC-refrigeration, sheet metal, or hydronic work. An individual holding a master or journeyperson mechanical license shall also not be required to obtain a special, restricted license that is designated as a sublicense of the mechanical, HVAC-refrigeration, sheet metal, or hydronic licenses. 4. The board shall adopt rules to allow a grace period for a contractor to operate a business described in subsection 2 without employing a licensed master. 2007 Acts, ch 198, §10; 2008 Acts, ch 1032, §103, 202; 2008 Acts, ch 1089, §10, 12; 2009 Acts, ch 151, §9, 10; 2013 Acts, ch 77, §9 – 11, 36; 2013 Acts, ch 140, §56; 2014 Acts, ch 1092, §26; 2019 Acts, ch 99, §9; 2020 Acts, ch 1103, §8, 31 Wed Dec 10 22:41:25 2025 Iowa Code 2026, Section 105.10 (27, 0)
Source: official Iowa text · Last verified 2026-08-27
Frequently Asked Questions About Iowa § 105.10
What does Iowa Code § 105.10 cover?
Section 105.10 ("105.10 License or certification required — exceptions.") is part of the Iowa Code, the codified statutory law of Iowa. It sets out the legal rule or procedure described in the text above. Statutes are amended regularly, so always verify against the official source.
How do I cite Iowa § 105.10?
A common citation format is "Iowa Code § 105.10" (Iowa). Legal writing may require the code abbreviation, section number, and year or edition. Match the style required by your court, professor, or publisher.
Is this the official text of Iowa law?
No. This page is for research and education and may not include the most recent amendments. For official current law, check the Iowa official source linked on this page or consult a licensed Iowa attorney.
How does Iowa § 105.10 apply to my situation?
Statutes are interpreted in context, and application depends on your specific facts. Only a licensed attorney in Iowa can advise on how this section applies to you. Contact your state or local bar association for a referral.
Sources & Verification
Not legal advice. Verify against the official source and consult a licensed attorney in Iowa.