Licensed plumbing contractor with service rates of $70-$130/hour.
Starting a plumbing business in Illinois requires proper licensing, years of hands-on training, and a solid investment in specialized tools. Illinois Dept. of Public Health handles plumbing licensing. Licensed plumber required. Contractor registration + exam through IDPH. Startup costs range from $14,700 for a solo operator to $73,500+ for a fully equipped operation. Standard Illinois business taxes apply. Plumbing is a recession-resistant trade—people always need water and working drains. Licensed plumbers in Illinois charge $70-$130/hour, with emergency calls commanding premium rates.
Performing plumbing work without a valid license in Illinois 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 | Magnitude |
|---|---|---|---|
| Plumbing License & Exams Illinois licensing fees | $200 | $800 | |
| LLC Filing Illinois LLC registration | $150 | $150 | |
| General Liability Insurance Annual, $1M coverage | $490 | $1,960 | |
| Workers Compensation Insurance Required if hiring | $2,450 | $4,900 | |
| Commercial Auto Insurance Annual coverage | $1,470 | $2,940 | |
| Service Vehicle Van or truck with shelving | $9,800 | $39,200 | |
| Plumbing Tools Wrenches, cutters, soldering, cameras | $2,940 | $7,840 | |
| Drain Cleaning Equipment Drain snake, jetter | $980 | $4,900 | |
| Pipe Inspection Camera Sewer camera for diagnostics | $490 | $4,900 | |
| Surety Bond Required by some states/clients | $0 | $4,900 | |
| Marketing & Website Google Ads critical for plumbing | $490 | $1,960 | |
| Scheduling Software Monthly, Housecall Pro or Jobber | $0 | $200 | |
| Startup range | $14,700 | $73,500 |
The line items above are the main cost drivers, not an exhaustive sum. Several are alternatives rather than additions — a mobile setup or a storefront, a rented kitchen or a build-out — so they are not added together. The startup range is the figure used across this page.
Illinois Dept. of Public Health. Licensed plumber required. Contractor registration + exam through IDPH.
Illinois Secretary of State
Required by most clients
Required in Illinois for employees
Required in some states and for public projects
Check city/county requirements
| # | City | Note |
|---|---|---|
| 01 | Chicago Chicago provides strong demand for residential and commercial plumbing services. With 2.7M residents it is the largest of the four markets listed for Illinois. | Chicago provides strong demand for residential and commercial plumbing services. With 2.7M residents it is the largest of the four markets listed for Illinois. |
| 02 | Aurora Aurora provides strong demand for residential and commercial plumbing services. With 180K residents it is the second largest of the four listed markets, well under a tenth the size of Chicago. | Aurora provides strong demand for residential and commercial plumbing services. With 180K residents it is the second largest of the four listed markets, well under a tenth the size of Chicago. |
| 03 | Naperville Naperville provides strong demand for residential and commercial plumbing services. With 150K residents it is the third largest of the four listed markets, well under a tenth the size of Chicago. | Naperville provides strong demand for residential and commercial plumbing services. With 150K residents it is the third largest of the four listed markets, well under a tenth the size of Chicago. |
| 04 | Rockford Rockford provides strong demand for residential and commercial plumbing services. With 145K residents it is the fourth largest of the four listed markets, well under a tenth the size of Chicago. | Rockford provides strong demand for residential and commercial plumbing services. With 145K residents it is the fourth largest of the four listed markets, well under a tenth the size of Chicago. |
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 Illinois 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 Illinois Dept. of Public Health. Licensed plumber required. Contractor registration + exam through IDPH. 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 Illinois market rates, competition, and target demographics. Plan for 6+ months of reserves.
File LLC ($150) with Illinois 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 Illinois contractor directories. Network with property managers and real estate agents.