South Dakota Plumbing License: What Applies and What Does Not
What South Dakota requires of a plumbing business in 2026, what the LLC has to file first, and where the license and the entity are two separate steps.
By Edmond Hui · Last updated: September 2026
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South Dakota plumbing licensing at a glance
| State credential required for this work? | Yes, statewide |
| What they are called | Plumbing Contractor, Plumber, Third-year Apprentice Plumber, Apprentice Plumber, Sewer and Water Contractor, Sewer and Water Installer |
| Who issues it | South Dakota Plumbing Commission |
Does a plumbing business need a license in South Dakota?
South Dakota issues 6 license classes for plumbers.
South Dakota licenses plumbing statewide through the Plumbing Commission at the Department of Labor and Regulation. The plumbing contractor license requires six years of experience, at least two of them as a plumbing contractor or plumber, and separate specialty licenses cover sewer and water, appliance, manufactured and mobile home, underground irrigation and water conditioning work.
The Commission's published license types are occupational licenses, and the plumbing license application collects the individual applicant's name, Social Security number and present employer. The Commission's licensing page does not state whether a company must separately hold a license.
This records what South Dakota publishes, not a determination about your business. Scope, thresholds and local requirements are set by the issuing body, so confirm with them before you bid or file.
Source: South Dakota Plumbing Commission, Licensing Information. Verified 2026-09-03.
What the LLC has to do first
Several states license the plumbing company separately from the individual plumber, so the LLC and the license are two filings, not one.
The entity filing is separate from anything the license requires. In South Dakota it is made with the South Dakota Secretary of State. File directly with the state here. The order matters wherever the license is issued to the company rather than to a person: the entity has to exist before an application can name it.
Forming an LLC as a plumbing business in South Dakota covers the filing itself, step by step.
Insurance South Dakota plumbers are asked to show
Plumbing license and registration schemes commonly require proof of general liability cover, and water damage from a failed connection is the claim these policies are bought for.
We do not publish South Dakota premium figures for this trade, so nothing here is a quote. Our business insurance guide for plumbers covers what each policy does and does not pay for.
This guide is general information, not legal or tax advice, and reading it does not create an attorney-client relationship. It reports what each state licensing board publishes for this trade, with the sources this page cites. It cannot tell you whether your own work needs a licence: that turns on the scope of the job, the value of the contract, and the city or county you work in, which commonly adds its own registration on top of the state's. Confirm your own position with the board named on this page and with your local building or business licensing office before you bid or start work.
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Edmond Hui · Founder, MyStateLLC
Edmond Hui is a software engineer and serial entrepreneur based in New York who has founded multiple online businesses across e-commerce, media, and information publishing. Before transitioning into tech, he spent years as a commercial real estate professional closing deals totaling over 100,000 square feet, giving him firsthand experience with business formation and entity structuring. He built MyStateLLC to provide the free, state-specific LLC guidance he wished existed when forming his own companies.