Skilled plumbers are in demand. Turning that skill into a business takes the right license, solid pricing and a system for dispatching calls.
Plumbing is one of the most regulated trades because mistakes affect public health and safety. Licensing is set by states and in some places by cities or counties. A common path is:
| Level | What it usually means |
|---|---|
| Apprentice | Learning the trade under supervision, often registered with the state |
| Journeyman | Can do plumbing work independently after documented hours and an exam |
| Master plumber | Additional experience and exam; often required to pull permits, supervise or own a plumbing business |
| Plumbing contractor | Some states issue a separate contractor license for the business itself |
Rules differ widely: some states require the business owner to be a master plumber, others allow a company to operate under a licensed master employee, and some regulate plumbing locally. Specialty certifications, such as backflow prevention testing or medical gas installation, may also apply. Check with your state plumbing board before you open.
| Focus | Work | Considerations |
|---|---|---|
| Residential service and repair | Leaks, clogs, water heaters, fixtures, emergency calls | Fast response and reviews drive growth; on-call coverage needed |
| New residential construction | Rough-in and finish plumbing for builders | Steady volume, lower margins, builder payment terms |
| Commercial service | Restaurants, offices, retail, property managers | Service agreements; after-hours work |
| Commercial construction | Large projects, often as a subcontractor | Bonding, estimating and project management skills |
| Specialty | Drain cleaning, sewer camera inspection, water treatment, backflow testing | Specialized equipment; strong add-on revenue |
Our legal requirements checklist covers the general steps for any new business.
| Coverage | Why it matters |
|---|---|
| General liability | Water damage claims can be large; most clients and GCs require proof |
| Workers’ compensation | Required for employees in most states |
| Commercial auto | Covers service vans and trucks |
| Tools and equipment | Covers tools in vans and on job sites |
| Professional or errors and omissions | Some commercial or design work may call for it |
| License or contractor bond | Required by some states and cities for licensing |
| Performance and payment bonds | Common on public and large commercial projects |
See our construction insurance guide for more on each policy.
| Category | Examples |
|---|---|
| Hand tools | Pipe wrenches, basin wrench, tubing cutters, pliers, crimp and press tools |
| Power tools | Drills, reciprocating saw, press tool, PEX expansion tool |
| Drain equipment | Hand augers, drum machines, possibly a hydro-jetter |
| Diagnostics | Inspection camera, locator, moisture meter, pressure gauges |
| Stock | Common fittings, valves, supply lines, cartridges, wax rings, water heater parts |
| Safety | Gloves, eye protection, knee pads, confined space and trench awareness |
| Technology | Tablet or phone for estimates, invoices, schedules and time tracking |
A well-stocked, organized van reduces return trips, which is one of the biggest profit leaks in service plumbing.
| Method | How it works | Pros and cons |
|---|---|---|
| Hourly plus materials | Time on the job times your rate, plus parts | Simple; customers may watch the clock |
| Flat rate (price book) | Set price for each task, such as a toilet replacement | Customers like certainty; requires accurate cost data |
| Service call or trip fee | Fixed fee to diagnose, sometimes credited to the repair | Covers drive time; explain it clearly |
| Bid pricing | Detailed estimate for construction projects | Requires takeoffs and careful estimating |
Your rates must cover fully loaded labor (wages plus payroll taxes, workers’ compensation and benefits), vehicle costs, drive time, overhead and profit. See our guide on how to price a plumbing job, and use the labor burden calculator.
Many plumbing jobs, such as water heater replacements, re-pipes, sewer lines and new installations, require a permit and inspection under the plumbing code your state or city has adopted. Pulling permits protects the customer and your license. Build permit fees and inspection time into your pricing, and keep records of every permit.
Service plumbing lives or dies by response time. Set up:
Under the FLSA, on-call time may be compensable depending on how restricted the employee is while waiting, and time spent responding to calls is work time. eztime’s scheduling software, mobile app and time clock help plumbing teams manage crews in the field. See also the field service page.
In many states, a plumbing business must be owned by or employ a licensed master plumber, or hold a separate contractor license. Requirements vary by state and city, so check with your state plumbing board.
It depends on whether you already own tools and a vehicle, your licensing and insurance costs and your focus. Service businesses can start with one stocked van, while commercial construction needs more equipment, bonding and working capital.
Many service plumbers prefer flat-rate pricing from a price book because customers like certainty. Hourly pricing is simpler to start. Either way, prices must cover fully loaded labor, vehicles, overhead and profit.
Usually general liability, workers’ compensation for employees, commercial auto and tools coverage. Some licenses and clients also require bonds.
Many installations and replacements, such as water heaters and sewer lines, require permits and inspections, while minor repairs often do not. Check the code adopted where you work.
It depends on how restricted they are. Under the FLSA, on-call time can be compensable if employees cannot use the time for their own purposes, and time responding to calls is work time. State rules may add requirements.
Mostly through online searches on phones, map listings, reviews and repeat customers. Answering quickly, showing your service area and hours clearly and having on-call coverage all increase emergency bookings.
With jobs and clients tagged in EZTime, you can compare what you quoted with the hours the work really took. See current plans and what each one includes on the pricing page.