Licensed plumbing contractor with service rates of $90-$160/hour.
Starting a plumbing business in Washington requires proper licensing, years of hands-on training, and a solid investment in specialized tools. WA Dept. of Labor & Industries handles plumbing licensing. Trainee, Journeyman (exam + 8,000 hours), Specialty. Contractor: separate UBI + insurance. Startup costs range from $16,800 for a solo operator to $84,000+ for a fully equipped operation. No state income tax in Washington helps your bottom line. Plumbing is a recession-resistant trade—people always need water and working drains. Licensed plumbers in Washington charge $90-$160/hour, with emergency calls commanding premium rates.
Performing plumbing work without a valid license in Washington is illegal and can result in fines, criminal penalties, and personal liability. Verify your license scope covers the work you're performing.
Many states and municipalities require separate backflow prevention certification for cross-connection work. This is an additional revenue stream worth pursuing.
| Item | Low | High | Note |
|---|---|---|---|
| Plumbing License & Exams Washington licensing fees | $200 | $800 | Washington licensing fees |
| LLC Filing Washington LLC registration | $200 | $200 | Washington LLC registration |
| General Liability Insurance Annual, $1M coverage | $560 | $2,240 | Annual, $1M coverage |
| Workers Compensation Insurance Required if hiring | $2,800 | $5,600 | Required if hiring |
| Commercial Auto Insurance Annual coverage | $1,680 | $3,360 | Annual coverage |
| Service Vehicle Van or truck with shelving | $11,200 | $44,800 | Van or truck with shelving |
| Plumbing Tools Wrenches, cutters, soldering, cameras | $3,360 | $8,960 | Wrenches, cutters, soldering, cameras |
| Drain Cleaning Equipment Drain snake, jetter | $1,120 | $5,600 | Drain snake, jetter |
| Pipe Inspection Camera Sewer camera for diagnostics | $560 | $5,600 | Sewer camera for diagnostics |
| Surety Bond Required by some states/clients | $0 | $5,600 | Required by some states/clients |
| Marketing & Website Google Ads critical for plumbing | $560 | $2,240 | Google Ads critical for plumbing |
| Scheduling Software Monthly, Housecall Pro or Jobber | $0 | $200 | Monthly, Housecall Pro or Jobber |
| Total range | $22,240 | $85,200 |
WA Dept. of Labor & Industries. Trainee, Journeyman (exam + 8,000 hours), Specialty. Contractor: separate UBI + insurance.
Washington Secretary of State
Required by most clients
Required in Washington for employees
Required in some states and for public projects
Check city/county requirements
| # | City | Note |
|---|---|---|
| 01 | Seattle Seattle provides strong demand for residential and commercial plumbing services. Service calls and repairs generate the best margins. | Seattle provides strong demand for residential and commercial plumbing services. Service calls and repairs generate the best margins. |
| 02 | Spokane Spokane provides strong demand for residential and commercial plumbing services. Service calls and repairs generate the best margins. | Spokane provides strong demand for residential and commercial plumbing services. Service calls and repairs generate the best margins. |
| 03 | Tacoma Tacoma provides strong demand for residential and commercial plumbing services. Service calls and repairs generate the best margins. | Tacoma provides strong demand for residential and commercial plumbing services. Service calls and repairs generate the best margins. |
| 04 | Bellevue Bellevue provides strong demand for residential and commercial plumbing services. Service calls and repairs generate the best margins. | Bellevue provides strong demand for residential and commercial plumbing services. Service calls and repairs generate the best margins. |
Offering 24/7 emergency plumbing service commands 1.5x-2x standard rates. Most competitors don't answer after 5 PM. Being the plumber who shows up at midnight builds loyalty and reputation.
Offer annual maintenance plans to residential and commercial clients. Recurring revenue stabilizes cash flow and keeps your name top-of-mind for bigger projects.
A pipe inspection camera pays for itself quickly. Showing homeowners video of their problem builds trust and justifies repairs. It's the single best ROI tool in plumbing.
Most plumbing customers in Washington search Google when they have a problem. Invest heavily in Google Business Profile, collect reviews aggressively, and consider Google Local Services Ads.
Obtain your plumbing license through WA Dept. of Labor & Industries. Trainee, Journeyman (exam + 8,000 hours), Specialty. Contractor: separate UBI + insurance. Most plumbers spend 4-5 years as apprentices before qualifying.
Work for an established plumbing company to build diverse skills. Learn residential, commercial, and service work. Save capital for your startup.
Define your niche (residential service, new construction, commercial). Research Washington market rates, competition, and target demographics. Plan for 6+ months of reserves.
File LLC ($200) with Washington Secretary of State. Get EIN from IRS. Open business bank account. Register for state taxes.
Secure general liability ($1M minimum), commercial auto, and workers comp. Many GCs and commercial clients require proof of all three plus bonding.
Buy a reliable service van with proper shelving. Stock essential tools: pipe wrenches, cutters, soldering equipment, drain machine. Budget $5,000-$15,000 for tools.
Choose field service software for scheduling, invoicing, and dispatch. Establish relationships with plumbing supply houses for trade pricing.
Google Business Profile is critical—most plumbing leads come from search. Join Washington contractor directories. Network with property managers and real estate agents.