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Michigan: under $600 a job without a contractor license
In Michigan a job under $600 on a home needs no state contractor license. Plumbing, electrical and HVAC: state license. Read from Michigan's own pages, checked November 6, 2026.
The limit in Michigan
The limit: Under $600 per job (homes). In short: under $600 per project, labor + materials + other items.
What counts: "A person that is working on 1 undertaking or project by 1 or more contracts, if the aggregate contract price for the labor, material, and any other items for the undertaking or project is less than $600.00." Materials count toward the limit, not just your labor.
Conditions: The exemption does not apply if the job is part of a larger operation, or is split into contracts under $600 to evade the act; Electrical, plumbing and mechanical work need the separate trade license regardless of size.
Residential only. Michigan's Article 24 licences residential builders and residential maintenance and alteration contractors.
Licenses in Michigan
General contractors: State license, homes only · not fully confirmed. Residential builder license (new homes and all residential work) or residential maintenance and alteration contractor license (specific trades such as carpentry, roofing, siding, masonry) for residential work of $600 or more. No state general contractor license for commercial work found. Whether commercial work needs a state license is not stated on a state page that was opened.
Plumbing: State license. Plumbing contractor, master, journey or apprentice plumber license/registration under the Skilled Trades Regulation Act; minor repair work is exempt.
Electrical: State license. Electrical contractor's license from the state board or the appropriate municipality; wiring only by licensed individuals.
HVAC: State license. Mechanical contractor license with classifications incl. HVAC equipment, ductwork, refrigeration, limited/unlimited heating service, and refrigeration & air conditioning service.
Your license number in Michigan
Your license number: Licensed residential builders and contractors must show the number on advertising. None of these rules names invoices.
In the rule's words: “A licensee shall include the name, license number, and actual business address, as shown on the license, in all advertising. The use of a telephone or post office box number alone is prohibited.” (Mich. Admin. Code R 338.1532)
Michigan's board, and when this was checked
The board: Michigan Department of Licensing and Regulatory Affairs (LARA), Bureau of Construction Codes - Residential Builders and Maintenance & Alteration Contractors. As of November 6, 2026. Dates on the state's pages: R 338.1532 history 2014 AACS.
This is a summary of each state's own pages as of November 6, 2026, not legal advice. Rules change, and cities and counties add licenses of their own. Check with your state's board, linked on this page, before you rely on it.
Compare Michigan with every state's limit.
Official sources for Michigan
8 of Michigan's own pages, each quoted with its link:
- MCL 339.2403 - Residential builder/M&A contractor without license (MCL 339.2403(f)): “(f) A person that is working on 1 undertaking or project by 1 or more contracts, if the aggregate contract price for the labor, material, and any other items for the undertaking or project is less than $600.00. The exemption described in this subdivision does not apply if the work of a construction is only a part of a larger or major operation”
- MCL 339.2401 - Definitions (MCL 339.2401(b)): “(b) "Residential maintenance and alteration contractor" means a person that, for a fixed sum, price, fee, percentage, valuable consideration, or other compensation, other than wages for personal labor only, does any of the following: (i) Undertakes with another for the repair, alteration, or addition to, subtraction from, improvement of, wrecking of, or demolition of a residential structure”
- MCL 339.2404 - Residential maintenance and alteration contractor's license (MCL 339.2404(3)): “A license includes the following crafts and trades: carpentry; concrete; swimming pool installation; waterproofing a basement; excavation; insulation work; masonry work; roofing”
- Mich. Admin. Code R 338.1511 to R 338.1566 - Residential Builders and M&A Contractors (R 338.1532): “A licensee shall include the name, license number, and actual business address, as shown on the license, in all advertising.”
- MCL 339.5601 - Skilled Trades Regulation Act, license required (MCL 339.5601(1)): “(1) A person shall not engage in or attempt to engage in the practice of an occupation regulated under this act or use a title designated in this act unless the person possesses a license issued by the department for the occupation.”
- MCL 339.5737 - Electrical contracting; license required (MCL 339.5737(1)): “(1) Except as otherwise provided in this article or in subsection (3), a person shall not engage in the business of electrical contracting unless the person has received from the board or from the appropriate municipality an electrical contractor's license.”
- MCL 339.6107 - Plumbing license or registration required (MCL 339.6107): “(1) A person shall not engage in or work at the business of a plumbing contractor, master plumber, journey plumber, or apprentice plumber unless that person is licensed or registered under this article. ... (2) A license under this article is not required to perform any of the following work: (a) Minor repair work.”
- MCL 339.5807 - Mechanical contractor license classifications (MCL 339.5807(2)): “(2) The department shall issue a mechanical contractor's license under this article with 1 or more of the following classifications and limitations: (a) Hydronic heating and cooling and process piping. (b) HVAC equipment. (c) Ductwork. (d) Refrigeration.”
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