How to Start a Plumbing Business: The No-BS Guide

You Know How to Plumb. Now Learn How to Run a Business.

You've been working for someone else long enough. You're good at what you do, you know you can make more on your own, and you're tired of making money for a company that pays you half of what they charge the customer.

Going solo is the best decision most plumbers ever make. But the plumbing part is easy — it's the business part that trips people up. Licensing, insurance, pricing, finding customers, invoicing, taxes — nobody taught you this in your apprenticeship.

This guide covers everything you need to go from employee to business owner. No generic advice. No "write a business plan" filler. Just the actual steps, in order, with real numbers.

Step 1: Get Licensed

Requirements vary by state, but most require:

• Journeyman or master plumber license — typically requires 4–5 years of apprenticeship or equivalent experience plus a state exam
• Business license — register your business with your city/county. Usually $50–$200/year.
• Contractor's license — some states require a separate contractor license to operate a plumbing business (different from your plumber's license). Check your state's licensing board.

Cost: $200–$500 for initial licensing and registration
Time: 2–6 weeks for processing, depending on your state

Don't skip this. Operating without a license is a misdemeanor in most states, and one complaint to the licensing board shuts you down — plus fines.

Step 2: Get Insured

You need two types of insurance before you take your first job:

General liability insurance

Covers property damage and bodily injury. If you accidentally flood a customer's basement, this pays for the damage — not your personal savings.

Typical cost: $500–$1,500/year for a solo plumber
Coverage: $1M per occurrence / $2M aggregate is standard

Workers' compensation

Required in most states even if you're a sole proprietor with no employees. Covers you if you're injured on the job.

Typical cost: $1,500–$3,500/year depending on your state and revenue

Commercial auto insurance

Your personal auto policy probably excludes business use. If you're in an accident while driving to a job, your personal insurance can deny the claim. Switch to a commercial policy.

Typical cost: $1,200–$2,500/year

Total insurance cost: $3,200–$7,500/year. Budget for this before you quit your day job. It's non-negotiable.

Step 3: Set Up Your Business Structure

You have three common options:

Sole proprietorship

Simplest. No paperwork beyond your business license. You report income on your personal tax return. Downside: no liability protection — if someone sues your business, your personal assets are at risk.

LLC (recommended)

Separates your personal assets from your business. If a customer sues, they can go after the business but not your house or personal savings. Costs $50–$500 to form depending on your state. Takes 1–2 weeks.

S-Corp

Tax advantage once you're earning $60K+. Lets you split income into salary (subject to self-employment tax) and distributions (not subject to SE tax). More paperwork and requires a payroll service. Usually makes sense at $80K+ in net income.

For most new plumbing businesses: Start as an LLC. It's the right balance of protection and simplicity. You can elect S-Corp status later when your revenue justifies it.

Step 4: Buy the Essentials (And Nothing Else)

New business owners love buying equipment. Resist the urge to buy everything. Start with what you need for the first 30 days:

Vehicle

A used cargo van or truck with a rack system. Don't buy new. A reliable used van ($15,000–$25,000) does the same job as a $55,000 new one. You can brand it later.

Tools you need day one

• Pipe wrenches (14" and 18")
• Channel locks (2 sizes)
• Basin wrench
• Tubing cutter
• PEX crimping tool + rings
• Drill/driver set
• Reciprocating saw
• Torch kit (propane or MAPP)
• Drain cable machine (or rent as needed)
• Inspection camera (pays for itself on the first sewer call)
• PPE — safety glasses, gloves, knee pads

Tools you DON'T need yet

• A $5,000 jetting machine — rent it until you have enough drain calls to justify it
• A trencher — subcontract trench work until volume supports buying one
• A second vehicle — you're one person. One van.

Total startup equipment cost: $20,000–$35,000 (van + tools). Many plumbers start with tools they already own from their employee days, bringing this down to $15,000–$25,000 for just the van.

Step 5: Set Your Prices

This is where new business owners make the biggest mistake: pricing too low because they're afraid of losing jobs.

Calculate your minimum hourly rate:

1. Target take-home pay: $80,000
2. Self-employment tax (15.3%): $12,240
3. Overhead (van, insurance, tools, phone): $25,000
4. Total revenue needed: $117,240
5. Billable hours/year: 1,300 (you're not billing 8 hours/day — you're driving, estimating, invoicing)
6. Minimum hourly rate: $90/hour

That's your floor. Many markets support $95–$130/hour. Research what other licensed plumbers in your area charge and position yourself competitively — but never below your floor.

For a deeper breakdown on flat rate vs hourly pricing, read our complete guide to pricing plumbing jobs.

Step 6: Get Your First Customers

You don't need a marketing agency. You need 5–10 customers to start building momentum. Here's where they come from:

Your existing network (week 1)

Tell everyone you know — family, friends, neighbors, your barber, your gym buddy. "I started my own plumbing company. If you know anyone who needs a plumber, I'd appreciate the referral." This alone can generate your first 3–5 jobs.

Google Business Profile (week 1)

Set up a free Google Business Profile. This puts you on Google Maps when someone searches "plumber near me." Add your license number, photos of your van and work, and your phone number. This is the single most important marketing asset for a local trade business — and it's free.

Nextdoor and Facebook groups (week 1–2)

Join your local neighborhood groups. When someone asks "anyone know a good plumber?" — be the first to respond. Don't sell. Just say: "Licensed plumber here, happy to help. DM me and I'll come take a look."

Door hangers (week 2–4)

Print 500 door hangers ($80–$120). Hit neighborhoods near your completed jobs. "Your neighbor just hired us — here's 10% off your first service call." Simple, cheap, effective.

Ask for reviews (ongoing)

After every job, ask: "If you were happy with the work, would you mind leaving a quick review on Google?" Every review makes your Google Business Profile rank higher. 10 five-star reviews puts you ahead of 80% of local plumbers.

Step 7: Set Up Your Operations

You need a system for three things from day one:

Scheduling

Where do jobs live? How do you avoid double-bookings? How does the customer know when you're coming? At minimum, use Google Calendar. When you outgrow it, move to a trade-specific tool.

Invoicing

How do you bill the customer? How do you track what's paid? You can start with a free invoice template, but you'll outgrow it fast. The goal is to invoice the same day you complete the job — every time.

Customer records

Where do you store customer names, addresses, and job history? Phone contacts work for the first 20 customers. After that, you need something searchable.

JobNBill handles all three — scheduling, invoicing, and customer management — in one app for $35/month. It's built for exactly this stage of business: solo operator, phone-first, no time for complexity. But whatever you use, have a system from day one. The habits you build now determine whether this business scales or stalls.

Step 8: Handle Your Taxes

Self-employment taxes catch new business owners off guard. Here's what to know:

• Set aside 25–30% of every payment for taxes. Open a separate savings account and transfer it immediately. Don't touch it.
• Pay quarterly estimated taxes. The IRS expects payments in April, June, September, and January. If you wait until April to pay a full year of taxes, you'll owe penalties.
• Track every expense. Gas, tools, insurance, phone, software, van maintenance — it's all deductible. The difference between tracking expenses and not tracking them is $5,000–$10,000 in tax savings per year.
• Get an accountant. Not optional. A good accountant costs $500–$1,500/year and saves you 5–10x that in correct deductions and avoided mistakes. Ask other solo tradespeople in your area for recommendations.

The First 90 Days: What to Expect

Month 1 will be slow. You'll do 8–12 jobs, mostly from referrals. You'll second-guess your pricing. You'll spend too long on invoices. This is normal.

Month 2, you'll start getting repeat calls and Google leads. You'll settle into a rhythm. Your invoicing gets faster. You'll raise your prices slightly because you realize you were charging too little.

Month 3, you'll have 15–20 jobs and a growing customer list. You'll wonder why you didn't do this sooner.

The tradespeople who fail aren't the ones who lack skill — they're the ones who skip the business fundamentals: licensing, insurance, pricing, and systems. You're reading this guide, which means you're already ahead of most.

You Already Have the Hardest Part — the Skill. Now Build the Business.

Starting a plumbing business is simpler than most people make it. License, insurance, van, tools, phone, and customers. Everything else is optimization.

The one thing that separates plumbers who build a real business from plumbers who just have a job is systems. A system for scheduling. A system for invoicing. A system for tracking customers. Start simple, stay consistent, and upgrade when you outgrow it.

Try JobNBill Free for 14 Days →

No credit card required. The scheduling + invoicing app built for solo tradespeople.