Plumbing Contractor Permit Requirements in Silver Spring, MD

Complete permit and license guide for starting a plumbing contractor in Silver Spring, Montgomery County, Maryland.

Verified 2026-08-28 5 stops $400–$1,200 est. 4–10 weeks to obtain all licenses
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Not legal advice. Requirements may change — always verify with your local government authority before applying. Key agencies and fees on this page were re-checked against official government sources on .

Federal — start here

1 stop

  1. EIN (Employer Identification Number)

    Required if you have employees or operate as an LLC or corporation. Free from the IRS.

    Official government source

    FreeImmediate (online application)

State of Maryland

1 stop

  1. Maryland Comptroller — Sales Tax Registration

    Required for all businesses selling taxable goods or services in Maryland (6% state rate; Maryland has no local sales taxes). Retail product sales are taxable. Some services are also taxable — notably cleaning of a COMMERCIAL or industrial building (janitorial/commercial cleaning) under Md. Tax-General §11-101(m): commercial cleaning businesses must collect 6% on the service itself, while residential cleaning is not taxable. Sales of photographs (portrait/wedding) are taxable as tangible personal property. Registration with the Comptroller of Maryland is free.

    Official government source

    FreeImmediate (online via bFile)

City of Silver Spring / Montgomery County

3 stops

  1. Maryland State 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.

    Official government source

    $87.50 (original license); $87.50 renewal (exam fee paid separately)4–8 weeks

  2. Montgomery County — No General Business License (activity-specific licenses only)

    Silver Spring is an unincorporated community in Montgomery County, so all local permits come from the county. Neither Maryland nor Montgomery County requires a general business license. Only specific activities are licensed by the Clerk of the Circuit Court License Department — e.g., retail sales require a Trader's License; garages, vending machines, and construction have their own licenses. Most service businesses need no county business license; confirm any activity-specific license with the Clerk's License Department (licenses expire April 30 annually).

    Official government source

    $0 for most businesses; Trader's License (retail only) fee varies by inventory valueNot applicable for most businesses; Trader's License typically issued within days

  3. WSSC Water Plumbing Permit (per project)

    In Montgomery County, including Silver Spring, plumbing and fuel-gas permits are issued by WSSC Water — not the county building department. Only WSSC-registered principal master plumbers and gasfitters (or their proxies) can apply, using WSSC's ePermitting system. WSSC inspections are required upon job completion.

    Official government source

    WSSC permit fees vary by scope and fixture count; confirm with WSSC Water Permit Services1–5 business days

Terminus

Open for business — est. $400–$1,200 · 4–10 weeks to obtain all licenses

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