The Division of Planning and Permitting

Permits and Inspections - Plumbing Permits


Plumbing permits are required to provide practical plumbing regulations for the safeguarding of person and property from hazards arising from unsanitary and unhealthy plumbing conditions. Any time that plumbing work is to be done, a plumbing permit is required. If the work is being performed in connection with a Building Permit, then the Plumbing Permit is not approved until after the Building Permit is approved.

  • Approving Agencies: Department of Permits and Inspections
  • Processing Time: Plumbing permits are usually issued within a time frame of 1 to 2 days from the day the application is made and the fee is paid. Applications are required to the department before the plumbing work is started.
  • Duration of Approval: Plumbing permits are valid for 1 year.


Applications for plumbing permits are taken at the department. The applicant for a plumbing permit must be a licensed plumber or the property owner. If the applicant is the resident property owner, but is not a licensed plumber, the owner must pass a homeowner plumbing examination with a score of at least 70% and sign a homeowner affidavit.

Only licensed master plumbers may install water or sewer lines from the main line to the structure. Licensed appliance installers or master plumbers may install water treatment systems. Licensed appliance installers or master plumbers may install natural or LP gas systems. Only licensed master plumbers may install residential sprinkler systems.




Plumbing Advisory Board

Contact Us

  1. Permitting Services
    30 N. Market St.
    Frederick, MD 21701

    Ph: 301-600-2313

    Permit Status/ Inquiries
    Ashlye Bonomo


    Monday - Friday
    8 a.m. - 4 p.m.

    Staff Directory