Plumbing Contractor Permit Requirements in Baltimore, MD
Complete permit and license guide for starting a plumbing contractor in Baltimore, Baltimore City County, Maryland.
Not legal advice. Requirements may change — always verify with your local government authority before applying. Last verified: .
Baltimore / Baltimore City County Requirements
3 requirementsMaryland Board of Plumbing — Master Plumber License
Master Plumbers in Maryland must be licensed by the Maryland Board of Plumbing. Requires passing a state exam and demonstrating apprenticeship experience.
Baltimore City Department of Finance — Business License
Baltimore City requires a separate Business License for all businesses operating within city limits. This license must be renewed annually and displayed at your place of business.
Baltimore City County / Baltimore Plumbing Permit (per project)
A separate permit must be pulled with the local building/plumbing department for each job. Inspections are required upon job completion.
Maryland State Requirements
1 requirementMaryland Comptroller — Sales Tax Registration
Required for all businesses selling taxable goods or services in Maryland. Maryland charges a 6% state sales tax. Most services are not taxable; retail product sales are taxable. Register free with the Maryland Comptroller.
Federal Requirements
1 requirementEIN (Employer Identification Number)
Required if you have employees or operate as an LLC or corporation. Free from the IRS.
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