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Detailed Information for : Plumbing Inspector, Uniform Dwelling Code (UDC), One- and Two-Family Home
Applies to persons who conduct inspections for the purpose of determining compliance with Comm 25, 82, and 84 plumbing requirements.  
License Type:
Up to 4 years. Expires on June 30 during the fourth year after issuance.  
$15 Application, $25 Exam, $40 Credential (credential fee is prorated for partial cycle).  

No experience or training necessary to take exam.  Commercial Plumbing Inspector can inspect the residential plumbing. 

Required Documentation:

Signed application form and appropriate fees.

Additional Information:
Send signed application form and fees to State of Wisconsin, Department of Commerce-Credentialing, PO Box 78780, Milwwaukee, WI 53293-0780.  Other correspondence goes to Safety and Buildings Division, PO Box 7082, Madison, WI 53707-7082.   
Application Form(s):

Call Safety and Buildings Division at (608) 261-8467 for application form, contact us at, or obtain an application form from our website.

Wisconsin Statutes:

Departmental duties (s. 101.63)
Compliance and penalties (s. 101.66) 

Administrative Rules/Codes:
Dwelling inspectors (Comm 5.63)  
Contact Information
Credentialing Unit
Home Page:
E-mail :
Hours of Operation:
7:45 am - 4:30 pm, Monday through Friday  
Mail Address:
PO Box 7082, Madison, WI 53707-7082  
Street Address:
201 West Washington Avenue, Madison, WI 53703  
Agency Web Site:
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For additional assistance with business-related license, permit and registration information, visit the Wisconsin Small Business Development Center at or phone them at 608-263-7680.