License & Certification Requirements

Press Enter to show all options, press Tab go to next option

We require valid certifications, registrations, and licenses for different contractors. Generally speaking, licenses and certifications mean that a person or contractor has shown some level of proficiency through testing or a quality control standard.


All contractors working on a one or two-family dwelling must hold a valid:

  • State of Wisconsin Dwelling Contractor Certification
  • Dwelling Contractor Qualifier Certification

All contractors, including subcontractors, working on commercial buildings must hold a valid:

  • State of Wisconsin Building Contractor Registration


All contractors performing electrical work in the City of Wauwatosa must hold a valid:

In addition, the supervising electrician must hold a valid:

  • State of Wisconsin Master Electrician's Certification


All contractors performing Heating, Ventilation and Air Conditioning (HVAC) work in the City of Wauwatosa, including installation and service work, must hold a valid:

  • State of Wisconsin HVAC Registration


All contractor's performing plumbing work in the City of Wauwatosa must hold a valid:

  • State of Wisconsin Master Plumber's or Journeyman's Plumber's License.


All inspectors performing residential and commercial inspections are State of Wisconsin certified and licensed to perform inspections within their respective fields. Many inspectors are multidisciplined and can inspect in more than one inspection category. These certifications and licenses have been obtained through specialized training and each inspector is required to participate in continuing education on an annual basis.

For detailed credential/license information: Department of Safety and Professional Services

For the Property Owner

We recommend that you solicit at least two, preferably three bids, have all contracts including change orders in writing, ask for verification that the contractor is licensed or certified, and that a copy of any required permit will be provided. Checking references for happy customers is a good indicator of their job qualifications. We also suggest that you withhold final payment until all inspections are completed. This is your best protection from fraudulent contractors.

Remodeling and home improvement contractors are also governed by the State of Wisconsin, Department of Agriculture, Trade, and Consumer Protection, Chapter 110. This administrative code outlines prohibited trade practices, building permits, warranties, and contract compliance standards.

Free viewers are required for some of the attached documents.
They can be downloaded by clicking on the icons below.

Acrobat Reader Download Acrobat Reader Flash Player Download Flash Player Windows Media Player Download Windows Media Player Microsoft Silverlight Download Microsoft Silverlight Word Viewer Download Word Viewer Excel Viewer Download Excel Viewer PowerPoint Viewer Download PowerPoint Viewer