How to Start a Plumbing Business in 2026 (From a Working Owner)
Most articles about starting a plumbing business are written by people who have never held a wrench. This one isn't. If you can sweat copper, snake a drain, and answer your phone after 9pm, you can build a six-figure plumbing company in under 18 months. Here's exactly how.
You don't need a fancy plan. You need a license, a truck, a phone that rings, and a price list you actually charge.
Step 1: Get your license sorted (or document your hours)
Every state is different. In Massachusetts you need 8,500 hours under a master before you sit the journeyman exam. In Texas it's roughly 8,000 hours and you can take the master exam four years after your journeyman. In Florida you need a state-certified or registered contractor license depending on whether you cross county lines. Look up your state's board the day you decide to do this — don't guess.
If you're already a journeyman, you can run your own work in most states under a master's license through a "qualifier" arrangement. That's how most one-truck shops start. The qualifier gets paid a small monthly fee. You do the work and keep the money.
Step 2: Form the LLC the right way
Single-member LLC. State filing — usually $50 to $300. Get an EIN at irs.gov (free, takes 10 minutes). Open a business checking account at a local credit union, not a megabank. Personal money and business money never touch.
One mistake that kills new plumbers: they take cash, deposit it personally, then can't prove income when they try to buy a house or finance a second truck. Run it through the business from day one.
Step 3: Insurance is non-negotiable
You need three things: General Liability ($1M/$2M), Commercial Auto on the truck, and Workers' Comp if you have any employee (in most states, even a 1099 helper). Expect $2,500 to $5,000 a year combined for a one-truck shop. Use Next Insurance, Hiscox, or a local independent agent. Don't go bare. One slab leak claim ends a bare business overnight.
Step 4: The truck setup that pays for itself
A used 2018-2021 Transit, ProMaster, or Sprinter with under 100k miles is the move. Pay cash if you can. If you finance, keep it under $400/month or you'll be working for the lender. Inside the truck you need:
- Adrian Steel or Ranger Design shelving (don't cheap out — your shop is your office)
- A press tool (ProPress saves 30 minutes per job; pays for itself in two weeks)
- Sewer camera + locator (you'll charge $300 to find what costs you 20 minutes)
- Drain machine — K-50, K-60, or sectional
- Torch kit, ratchets, basin wrench, channel locks, and 200+ fittings on the truck
The plumbers who win bring everything they need on the first trip. The ones who fail drive back to the supply house twice a day.
Step 5: Price like you're worth it
Flat-rate, not hourly. Pull a price book from Profit Rhino or build your own. A toilet swap is $375 to $550 depending on your market. A water heater is $1,800 to $3,200 installed. A main line clear is $300 to $500. Whole-house repipes start at $7,500.
If you're charging $85/hour you're losing. The customer doesn't care how long it took — they care that it works and you're covered if it doesn't. Flat-rate gives them a fixed number and gives you the margin to run a real business.
Step 6: Get the first 10 customers without ads
Google Business Profile (free) is more important than any paid ad in your first 90 days. Optimize the listing with real photos, your service area, and ask every customer for a Google review. Aim for 50 reviews in your first 12 months — that's the threshold where you start ranking in the local 3-pack.
Other free lead sources:
- Nextdoor — claim your business, answer plumbing questions, never sell
- Facebook neighborhood groups — same rule
- Real estate agents — they refer 10x what any single homeowner will
- Property managers — boring but recurring
- HVAC and electrician shops who don't do plumbing — referral pipeline
Step 7: Answer the phone
This is where 70% of new plumbers lose. They miss the call. The customer calls the next plumber on the list. They lose a $400 ticket because they were 60 seconds slow.
Use a real answering service ($75-150/month — Ruby Receptionists or AnswerForce) or commit to picking up every call yourself between 7am and 7pm. A missed call is a sold job somebody else got.
Step 8: Get paid the same day
Square, Stripe, Jobber, or Housecall Pro on the phone. Customer signs and pays before you leave the driveway. No 30-day net. No "I'll mail you a check." The job is done when the money has cleared.
Step 9: Track your numbers weekly
Revenue, materials cost, labor cost, gross margin, and number of jobs per week. If your gross margin is below 55% you're either pricing too low or buying material wrong. The plumbers who win know their numbers on Sunday night before they start Monday.
Step 10: Hire your first helper before you're ready
The second you can't keep up with the schedule, hire. A first-year apprentice runs $18-22/hour in most markets, billable at $125. You should be making money on them inside week one. If you wait until you're drowning, you're already losing customers.
Step 11: Build the recurring revenue layer
Service agreements: $19/month for two annual inspections, priority scheduling, and 10% off repairs. Sell one to every customer. At 200 agreements you have $45k/year in passive revenue before you turn the key on the truck. That's the difference between a plumber with a truck and a plumbing business.
Step 12: Reinvest, don't celebrate
First year, don't buy a new truck. Don't lease the F-250 King Ranch. Don't upgrade the house. Reinvest every dollar over your bare-minimum living costs into: a second truck, a second tech, a CRM, and brand. Year three you'll be running three trucks and clearing $300k-500k a year. Year five you can sell for 3-5x EBITDA if you want out.
The mistakes that kill new plumbers
Underpricing to "build a customer base." A cheap customer stays cheap. You can't raise rates 80% on someone you trained to expect $65/hour.
Cash jobs. The IRS finds them. So does the bank when you try to finance growth. Every dollar through the LLC.
No service agreements. You're rebuilding revenue from zero every Monday.
Treating the truck like a personal vehicle. Dirty truck, no logo, no signage — you're invisible to the next 100 people who drive past you on the way to a job.
Hiring family before they're ready. Just don't.
What this actually pays
A one-truck owner-operator plumber doing $400k/year in revenue at 60% gross margin and 25% net margin is taking home $100k. A three-truck shop doing $1.2M can clear $200-300k if you run it tight. A 10-truck shop with a service manager and dispatcher is a $3-5M business worth $1M-2M at exit. The ladder is real and the rungs aren't a mystery.
Where to go from here
If this read like the truth, that's because it is the truth — written by operators who actually run trucks. The full version of this playbook is The Plumber Guidebook — 270+ pages, every step from your first apprenticeship hour to selling the company. It costs less than one service call. Read it tonight, run different tomorrow.
The Guidebook & Co.™ publishes operator-grade playbooks for founders, trades, and credit. Start free with Volume 1 — 20 chapters, no email gate.