Small plumbing and HVAC contractors spend $16,000-$38,000/year on insurance before earning a dollar of profit, pricing new entrants out of business ownership

A typical $500,000-revenue plumbing business pays $16,210 to $38,420 per year in total insurance costs — general liability, workers' compensation, commercial auto, and bonding. Workers' comp alone runs $3.14 per $100 of payroll for HVAC contractors, and plumber rates vary from $1.17 to $8.92 per $100 of payroll depending on state — a 7.6x variation that has nothing to do with the contractor's skill or safety record. For a solo plumber or two-person HVAC shop trying to go independent after earning their master license, this insurance burden can consume 10-15% of gross revenue before they've paid for a single wrench or gallon of gas. This matters because the trades shortage isn't just about getting people into the field — it's about keeping experienced journeymen from starting their own businesses, which is how the trades have historically scaled. When a master electrician decides the insurance, bonding, and compliance costs of going independent aren't worth the risk, they stay employed by a larger firm. That firm captures the profit margin. The journeyman earns wages but doesn't build equity. And the market has one fewer independent contractor competing for homeowner business, which reduces availability and raises prices for consumers. The geographic variation makes it worse. General liability premiums range from 0.8% of revenue in Kansas to 9.8% in South Carolina. A plumber who could profitably run a solo shop in Wichita would go bankrupt doing the same work in Charleston. This creates insurance deserts where small trade businesses can't form, concentrating the industry into fewer, larger companies that can absorb the overhead. The structural cause is that insurance pricing for construction trades is based on industry-wide claims data, not individual contractor safety records (for small businesses that lack sufficient claims history). A careful, experienced plumber with zero incidents pays the same class code rate as a sloppy one. There's no meaningful way for a new small contractor to demonstrate lower risk and earn lower premiums. The insurance industry treats all small trade contractors as equivalent risk pools, and the resulting premiums function as a regressive tax on business formation.