Guide
How to start a plumbing business
Plumbing is a licensed trade almost everywhere, so the road starts with your license path, not your logo. Confirm where you stand with the state board, register the business, get insured, and price service work off your real hourly cost. The steps in order are below.
| Trade licensing | Licensed in nearly every state, typically journeyman then master, with experience hours. Your state board publishes the path |
| Business registration | Your state's Secretary of State |
| Insurance to price in | General liability, workers' comp, commercial auto, and bonding where required |
| Pricing norm | Flat-rate or per-job for service; bid work for remodels and new construction |
| Last reviewed | July 2026 |
Licensing and permit rules change and they change locally; every row above points at the office that publishes the current answer. Our worked-example pack, built for a fictional Kansas City lawn care company, shows the depth your own pack goes to: read it here.
What to do, in order
- 1
Confirm your license path before anything else
Nearly every state licenses plumbers, usually journeyman then master, with logged experience hours, and many require the master license to pull permits and own the company. Your state board publishes the exact path. Know where you stand on it before you spend a dollar.
- 2
Register the business with your state
Registration happens at your state's Secretary of State, usually online in a day or two, and most states require a registered agent with a street address in the state. The current filing fee is on your state's Secretary of State site.
- 3
Get your EIN and open a business bank account
The EIN is free from the IRS, online, usually the same day. The bank will not open a business account without it, and you want every job check running through that account from day one so your books mean something at tax time.
- 4
Get insured and bonded where the work requires it
General liability, workers' comp the day you have a helper, commercial auto for the van. Some states and cities require a bond to pull plumbing permits; the permit office will tell you the number.
- 5
Price service work off your burdened hour
Take a wage and add payroll tax, comp, insurance, the truck, and the hours you cannot bill. What comes out is the number you have to beat on every quote. Service plumbing lives on small jobs quoted fast, so put the math in a price book you can open at the door instead of doing arithmetic in the truck.
- 6
Take deposits on anything with a fixture in it
Special-order fixtures, water heaters, remodel rough-ins: the deposit covers the material before your card does. Put the deposit line in your quote template on day one so it never feels like a negotiation.
- 7
Go get the first ten customers
Claim the Google Business Profile, because burst-pipe searches go straight to the map pack and call the first number that answers. Realtors, property managers, and remodelers all need a plumber who shows up when they said they would. Be that phone number.
The pricing step is the one most people skip. The burdened-rate calculator is free, runs in your browser, and tells you the number you have to beat on every quote.
Where first-year plumbing companies go wrong
Pricing service calls like construction work. Construction bids compete on the number; service calls compete on showing up today. A drain call priced off your burdened hour with a real minimum beats an hourly rate you discount at the door.
Answering every emergency at day rates. The 2 a.m. water heater call is worth more than the 2 p.m. one, and your after-hours price should say so. If nights are priced like afternoons, you are donating sleep.
No written scope on remodel work. On remodels, the job grows a little every day you are there. A written scope with an exclusions line is what turns 'while you're here' into a change order instead of free work.
The plan the bank actually reads
Whatever route you take to it, the plan a lender expects has a known shape. This is the table of contents of the business plan in every CrewPlaybook pack, written for your trade and your numbers:
- 1.Executive summary
- 2.Company description
- 3.Service offerings
- 4.Market analysis
- 5.Operations plan
- 6.Marketing and sales
- 7.Team and organization
- 8.Financial projections narrative
- 9.First-year milestones
- 10.Risks and mitigations
A finished example, written for a fictional Kansas City lawn care company, is readable without an account: read the example business plan.
Frequently asked questions
Do I need a license to start a plumbing business?+
In nearly every state, yes. Most run a journeyman-then-master path with logged experience hours, and many require a master license to pull permits and own the company. Your state board publishes the requirements.
How much does it cost to start a plumbing business?+
A service-first start with one stocked van costs a fraction of a construction-first start with a crew. Build your own list and run it against your numbers; the pack's equipment list prices your trade at three budget tiers.
How much should I charge for a service call?+
Start from your burdened hourly cost, then set a real service minimum so small jobs carry their share of the truck and the drive. Our free burdened-rate calculator gives you the base number.
Is a plumbing business profitable?+
Service-heavy plumbing companies tend to earn better margins than bid-only construction work, because small jobs priced right compound and nobody shops three quotes for a burst pipe. The price book and the answered phone decide it.
Do I need an LLC to start?+
Plumbers operate as sole proprietors and as LLCs. Registering one happens at your state's Secretary of State. Which structure fits your situation is a decision worth taking to an attorney or accountant licensed in your state.
The version written for your company
This guide is the general road. CrewPlaybook writes the whole pack for your trade, your state, and your numbers: the plan, the filings in order, the pricing math, the first-hire plan. Read the example pack before you decide.