Plumbing is licensed by states and sometimes by cities. Most require years of supervised work before the journeyman and master exams, and a contractor licence to run the business. Check with your state board first.
You can’t skip this. Your licence level decides what work you can sell.
Paperwork that can run while you wait for the licence.
A well-stocked van means fewer trips to the supplier and more jobs a day.
Plumbing calls come from search and referrals. Service plans keep them coming back.
Hire before you burn out, and keep the office side under control.
Open for business15 steps to go
Stage 1Get the licence you need
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Find your state plumbing board and its levels
Count your logged hours and years
Check if your city licenses plumbers too
Apply for the contractor or business licence
Get a bond if your state asks for one
Keep copies of every licence in the truck
Run the odds calculator with your budget
Compare starting with buying an existing company
Stage 2Set up the company
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Register the LLC with your Secretary of State
Apply for the EIN on irs.gov
Open a business bank account
Get general liability cover with water damage included
Put the van on a commercial auto policy
Quote workers’ comp before your first hire
Find how your city takes permit applications
Add permit fees to your quotes
Book inspections before you close walls
Stage 3Van and tools
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Fit shelving and label every bin
Stock the 50 parts you use most
Add a drain machine and a pipe camera when you can
Open accounts at two supply houses
Ask for 30-day credit terms
Learn their opening hours and delivery rules
Try two or three field service tools
Take card payments on the spot
Send a photo report after each job
Stage 4Price and win customers
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List your 30 most common jobs
Set a flat price for each
Charge a call-out fee for after-hours work
Claim your Google Business Profile
Show your licence number and service area
Answer every call or call back within 10 minutes
Offer a yearly maintenance plan
Add plan members to a reminder list
Give members priority booking
Stage 5Run and grow
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Stock up on winter parts by fall
Decide your after-hours policy
Save some summer profit for slow weeks
Check each hire’s licence level
Register as a sponsor for apprentices if your state allows
12-mo revenue$1,153,140+13% vs last yearStripe + QuickBooks
Questions people ask
How long does it take to become a licensed plumber?
In most states, about four to five years of supervised work and an exam to become a journeyman. A master licence usually needs more years as a journeyman and another exam.
Do I need a master plumber licence to start a business?
In many states, yes, or you need a licensed master or qualifier on staff. Some states also require a separate contractor licence and a bond.
How do plumbing businesses keep income steady?
Service plans for yearly checks, priced job lists and a mix of homes and commercial customers. Owners who made it also trained apprentices to grow.