How to Get a Plumbing Work Permit in Dearborn, MI (2026 Guide)
Everything you need to know about plumbing work permits in Dearborn, MI, local requirements, fees, timelines, and how to apply.
By Joey, Founder · Last updated May 15, 2026 · How we research →
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Free Permit Lookup →Do You Need a Plumbing Work Permit in Dearborn?
Based on Dearborn's local building codes, you'll need a permit when:
Adding a new plumbing fixture requires a plumbing permit.
Replacing a water heater requires a plumbing permit.
Re-piping a house requires a plumbing permit.
These plumbing work projects are typically exempt in Dearborn:
Replacing a plumbing fixture in the same location does not require a permit.
Permit Fees in Dearborn
Based on local Dearborn permit data, fees for plumbing work projects typically range:
Here's how fees break down by project scope nationally:
| Project Scope | Typical Permit Fee |
|---|---|
| Water heater replacement | $50 – $200 |
| Single fixture addition or relocation | $75 – $300 |
| Adding a bathroom | $150 – $500 |
| Gas line installation | $75 – $300 |
| Whole-house repipe | $200 – $500+ |
| Sewer line repair/replacement | $150 – $500+ |
Fees are typically calculated based on estimated project value. Contact Building & Trade Division for exact amounts.
How Long Does It Take?
In Dearborn, typical approval time for plumbing work permits is about 2 weeks.
More complex projects requiring structural review or variances may take longer. Simple projects may qualify for expedited or over-the-counter review in some cases.
How to Apply for a Plumbing Work Permit in Dearborn
- 1 Check requirements: Use our free lookup tool or contact Building & Trade Division to confirm your project needs a permit.
- 2 Gather documents: Prepare your application, site plan, construction drawings, and any other required documents.
- 3 Submit online: Dearborn accepts applications online at Building & Trade Division.
- 4 Pay fees: Pay the applicable permit fees ($45 – $540).
- 5 Wait for approval: Your application will be reviewed by Dearborn plan reviewers. Typical turnaround is about 2 weeks.
- 6 Begin work: Once approved, post your permit visibly at the job site before starting work.
- 7 Schedule inspections: Call Building & Trade Division at (313) 943-2150 to schedule required inspections at each phase of the project.
Dearborn Building Department Contact
Required Inspections in Dearborn
Most plumbing work projects in Dearborn require inspections at each construction stage:
Rough-In Plumbing Inspection, Pipe sizes and materials correct, drain slope (1/4 inch per foot for pipes under 3 inches), vent routing and distances per IRC Table P3105.1, cleanout placement, pipe support and hangers, firestopping at penetrations. Supply lines pressure-tested at 50 PSI minimum for 15 minutes. DWV system water-tested (filled to 10 feet above highest fitting, held 15 minutes). Gas piping tested at 3 PSI for 10 minutes.
Shower Pan / Liner Test (if applicable), Pan filled with water to the threshold height, held for 15 minutes minimum with no leaking. Liner properly installed and turned up walls. Drain connection sealed.
Final Plumbing Inspection, Every fixture drains properly, all traps filled with water, no leaks at any connections, gas connections leak-tested (if applicable), water heater installation complete and correct (T&P valve, expansion tank, venting, strapping), backflow prevention devices in place, and hose bibb vacuum breakers on all exterior faucets.
Schedule inspections with Building & Trade Division at (313) 943-2150 at least 24–48 hours in advance.
Frequently Asked Questions
Whether you need a permit depends on the size and scope of your plumbing work project. In Dearborn, some smaller projects are exempt while larger ones require a permit. Use our free lookup tool to check your specific situation.
Permit fees for plumbing work projects in Dearborn typically range from $45 – $540. Fees are usually based on the estimated project value.
Typical approval time in Dearborn is about 2 weeks. Complex projects requiring structural review may take longer.
In most cases, homeowners in Dearborn can pull permits and perform work on their own primary residence as an owner-builder. You're still responsible for meeting all code requirements and passing inspections.
Working without a required permit in Dearborn can result in fines, stop-work orders, required removal of completed work, and complications when selling your home.
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Free Permit Lookup →Other Permit Guides for Dearborn, MI
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See Detailed Plumbing Work Rules for Dearborn
View all local rules, exemptions, and fee details on the permit page.
Plumbing Work Permit Rules →