Commercial Lines
Also known as: CL · Commercial P&C
Commercial lines (CL) refers to insurance products sold to businesses — property, general liability, business owner's policies (BOP), commercial auto, workers' compensation, and specialty coverages.
What is commercial lines?
Commercial lines insurance covers businesses of every size, from sole proprietors to public companies. The dominant products are general liability (GL), property, BOP (a packaged GL+property product for small businesses), commercial auto, workers' compensation, and specialty lines (cyber, professional liability, employment practices).
CL accounts are larger, stickier, and more relationship-driven than PL. A small business owner doesn't usually shop their package every year. A contractor with a complex GL placement can take years to switch. Retention is correspondingly higher — 88–95% on a premium-weighted basis — and multiples are higher too.
Within CL, specialty placements (workers' comp, niche industries, surplus lines) trade at premium multiples. Standard CL business (BOP, package, small commercial) trades in the middle of the band.
Why it matters in agency valuation
A CL-heavy book is the most valuable thing a P&C agency can have. The combination of stickier accounts, higher retention, lower volatility, and bigger account sizes pushes the multiple toward the top of the market. CL specialty within CL pushes it further.
Example
Related terms
Personal lines (PL) refers to insurance products sold to individuals and households — primarily auto, homeowners, dwelling fire, umbrella, and renters insurance.
Property and casualty (P&C) insurance covers physical property and legal liability, distinct from life and health insurance — most independent insurance agencies focus exclusively on P&C.
Loss ratio is the percentage of premiums paid out as claims by a carrier — for an agency, the loss ratio of business placed with each carrier directly drives contingency commission income.
Book archetype is a high-level classification of an agency's book — PL Commodity, Balanced, CL Specialty, or Premium Specialty — that determines the base multiple range before any quality adjustments.
Last reviewed: April 24, 2026
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