Plumbing Company Entity Structure: The LLC for the Water Damage, the S Election, and the Master Plumber's Salary
September 28, 2026
A plumbing company's entity decision is shaped by a license that attaches to a master plumber, a payroll that exists from the first apprentice, and a liability profile whose claims are water — a failed water heater install, a repipe leaking behind a wall, a sewer replacement that fails — which makes the LLC or corporation the floor. The S election is cheap to add once the owner's profit clears a master plumber's salary, and the resale margin makes that profit larger than a pure labor trade's. Here is the analysis for a solo plumber, a service company with crews, and a plumbing-and-drain company with emergency revenue.
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