Plumbing work a Michigan homeowner can do without a permit

The state exemption in LARA’s own words

LARA’s plumbing permit page says plumbing work does not start until the enforcing agency issues a permit, and it names one exception: “a permit is not required for repairs which involve only the working parts of a faucet or valve or clearance of stoppages provided alterations are not made in the existing piping or fixtures.” Michigan.gov blocked our fetch, so the sentence reached us through a search result, but the wording matches the state facts we already carried.

Take it in pieces. The working parts of a faucet or valve are what is inside the fixture, not the pipe around it. Clearing stoppages means a snake or a plunger in a drain. The proviso is that nothing alters the existing piping or fixtures, so once a pipe is cut, moved or replaced, or a fixture is swapped or added, you are outside the exemption.

Minor repair under the license law is a separate list

Two texts get mixed up here. The permit exemption above comes from the state’s permit rules. The license law has its own definition: MCL 339.6103 calls “minor repair” only clearing stoppages, repairing or replacing a faucet or valve, or reinstalling the same fixture, with no modification to the plumbing system, and it excludes repair or replacement of a backflow preventer or an air admittance valve.

MCL 339.6107(2) then lists minor repair among the exemptions from the plumbing license requirement. The two lists overlap without matching, and the license definition does not by itself waive a permit. Where they seem to disagree, follow the narrower one and ask the building department.

Local offices describe it in plain terms

In the big cities, plumbing enforcement is local: permits come from city or township offices, and their plain-language pages are where the rule becomes concrete.

Portage’s plumbing FAQ says no permit is needed for clearing stoppages or repairing leaks in pipes, valves or fixtures, or for removing and reinstalling toilets, provided no valves, pipes or fixtures are replaced or rearranged. It adds that a hidden pipe or trap that fails and has to be replaced with new material is new work and needs a permit.

Drains carry a catch. Portage’s wording covers clearing stoppages, but clearing a main sewer line can involve the lateral, which is a separate question to put to your city. The drain cleaning page walks through what a stoppage call involves.

What clearly needs a permit

Water heaters come first. Sterling Heights says a permit is required to install one, and Delta Township lists a water heater change out among the projects that always need a permit. The water heater permit guide covers fees and the inspection, and replacing your own water heater covers who may do it.

Tub and shower replacement is next: Delta Township says it always needs a permit. A toilet swap is a gray area in the Portage text, so treat replacement as permit work until your office says otherwise.

Replacing a run of supply or drain pipe also falls on the permit side. The state exemption does not cover work that alters piping, and Portage treats a replaced concealed pipe as new work. That is our reading of the rule text, not a quoted statement, so confirm it with your office. The repiping page has more.

Sump pumps are the open question. We could not find an authoritative statement on whether replacing one needs a permit, so call your local building department. The sump pump page covers what we could source.

Who can pull the permit

LARA says the applicant must be a licensed plumbing contractor or a homeowner installing their own plumbing, building sewer or private sewer, and that permits for a building sewer or a water service alone may be issued to others. That fits MCL 339.6107(2), which exempts a homeowner doing their own plumbing in a single-family dwelling with a permit. The same section exempts work on a building sewer or water service pipe when a permit is pulled and inspections are done, so a sewer or service line job still needs a permit.

The exemption covers your own home. A friend or a handyman cannot do the work and put your name on the form. If a company is doing the job, its licensed contractor should pull the permit, and you can ask to see it. Under the Construction Lien Act a contractor has no lien right on a residential structure unless the work was under a written contract that states the license requirement and gives the license number, so that number should be on your paperwork anyway.

Fees and the cost of skipping the permit

Fees are local. Grand Rapids charges $52 for an application, and its schedule lists an administrative fee of $173 for work done before the permit; it is the only schedule we read that prices that. Skipping the permit can cost you in other ways, such as opening walls for an inspection, but no source puts a number on them, so we will not.

Finding your local office

Michigan’s plumbing code, the 2021 International Plumbing Code with state amendments, is adopted statewide by rule R 408.30701. Enforcement belongs to the state, a county or a local unit, and fees and procedures differ. Search the Statewide Jurisdiction List on LARA for your address, or start with a city number.

Grand Rapids has the Development Center, 616-456-4100. Sterling Heights has the Building Department, 586-446-2360, and Lansing the Building Safety Office, 517-483-4355. Those three numbers come from search summaries of city pages, so confirm them on the city’s own site. Midland’s city office handles plumbing inside the city limits, and outside the city the Midland County Code Authority is at 989-837-6521. For permit questions at the state level, LARA’s Bureau of Construction Codes lists 517-241-9313.

Each city we cover has a page with its permit office, beginning with Grand Rapids, Sterling Heights, Lansing and Midland.

A short checklist before you pick up a wrench

Start with one question: are you only fixing a part or clearing a drain, or is a pipe or fixture changing? If it is only a part, you are inside the state exemption, though your city may read it more tightly. If anything changes, call the building department, ask what the permit costs and who must pull it. If you hire someone, ask for the company’s license number and check it on the LARA lookup.