FirstBearing

How to Start a Plumbing Business

What it takes to legally start a plumbing business in the US — licensing, structure, EIN, taxes, insurance, and your first customers. The steps are the same everywhere; the forms and fees depend on your state, so pick yours below for the exact links.

Typical startup cost
$6,000–$25,000 (tools, van outfitting, license and bond, insurance)
Licensing
state + local — varies
Best structure
LLC for most
First customers
referrals + local search

  1. Check the licensing for plumbing work

    Nearly every state licenses plumbers at the journeyman/master level and requires hours of documented experience plus an exam. You usually can't legally advertise plumbing work without it. This is the part that varies most by state — some require a state license or registration before you can advertise, others leave it to the city or county. Confirm both your state board and your local government before you take a job.

  2. Decide what the business needs to open

    Repair, installation, and maintenance plumbing for homes and commercial clients. The setup areas that usually matter for a plumbing business: State/master plumber license, Liability + bond, Van and tools, Flat-rate pricing, Emergency availability. Typical cost to get operational: $6,000–$25,000 (tools, van outfitting, license and bond, insurance).

  3. Pick a structure — sole proprietor or LLC

    You can start as a sole proprietor with no filing, or form an LLC (usually $50–$300 depending on your state) for liability protection. For hands-on trade work where something can go wrong on a customer's property, most owners choose the LLC.

    LLC filing fee and steps by state ↗

  4. Get a free EIN from the IRS

    An Employer Identification Number is free and takes a few minutes online. You need it to open a business bank account and to hire.

    IRS — Apply for an EIN ↗

  5. Register for state taxes and get insurance

    Register with your state's tax agency if you'll collect sales tax, then line up general liability insurance and a surety bond — most contracts and license boards require proof of coverage.

  6. Get your first plumbing customers

    Google Business Profile + reviews, HomeAdvisor/Angi, and referrals from realtors and property managers. Reviews, Google Business Profile, and being reachable for emergency calls drive early work. Recurring commercial accounts stabilize revenue.

    Getting customers for a plumbing business ↗

Build your plumbing launch plan

FirstBearing turns this into a step-by-step roadmap for your exact business — the right forms, the official links, what to charge, and one next step every day. 7 days free. No credit card required. Then $19.99/mo only if you keep going.

Start free — no card required

Frequently asked

How do I start a plumbing business?

Check the licenses for plumbing work in your state, pick a structure (sole proprietor or LLC), get a free EIN from the IRS, register for state taxes, open a business bank account, get general liability insurance and a bond, then set up a Google Business Profile and line up your first jobs. The order and the exact forms depend on your state.

Do I need a license to start a plumbing business?

Nearly every state licenses plumbers at the journeyman/master level and requires hours of documented experience plus an exam. You usually can't legally advertise plumbing work without it.

How much does it cost to start a plumbing business?

Plan for $6,000–$25,000 (tools, van outfitting, license and bond, insurance) to get operational, plus $50–$300 if you form an LLC (varies by state). An EIN is free, and general liability insurance runs a few hundred dollars a year for most solo operators.

How much do plumbing businesses make?

It depends on your rates, your utilization, and your area. See the income and pricing breakdown for a plumbing business for typical owner take-home and what to charge.

Where do the first plumbing customers come from?

Google Business Profile + reviews, HomeAdvisor/Angi, and referrals from realtors and property managers.

Official sources

Fees and timelines are commonly-cited figures last reviewed September 2026 and can change — always confirm on the official site. This is educational information, not legal or tax advice.

Related

AI-generated guidance is for educational purposes only and is not legal, tax, or investment advice. Disclosures · Trust center