Tree Service Insurance Exclusions: The Gaps That Ruin Arborists

By Tamir Lerner · Thrive Risk Management (Encino, CA) · Updated 2026

Tree work is one of the highest-hazard trades an insurer can write. Chainsaws, climbing, rigging heavy limbs over houses, and running bucket trucks near energized lines make the risk enormous, so carriers protect themselves with narrowly written policies. A cheap certificate of insurance means nothing if the operations you actually perform are quietly carved out. Here are the exclusions that most often turn a covered arborist into an uninsured defendant.

Why do tree service policies have so many exclusions?

General liability underwriters price tree work against real loss data: dropped limbs crushing roofs and cars, climbers falling, groundmen struck by falling wood, and property damage from felling. Rather than decline the whole class, carriers write coverage and then restrict the pieces that produce catastrophic claims. That is why two arborists can hold policies that look identical on the declarations page but differ enormously in what they actually pay. The exclusion pages, not the cover sheet, define your protection.

The felling and removal exclusion

This is the single most damaging gap. Many low-cost policies are written for trimming and pruning only, and they specifically exclude the felling (cutting down) and removal of trees. Removal is where the biggest property-damage and injury claims happen, because you are dropping tons of wood, often over structures. If your policy says "trimming and pruning only" and you take down a 60-foot pine that lands on a garage, expect a denial. Any arborist doing removals needs a policy that names felling and complete removal as covered operations.

Height limitations you did not know you had

Some tree service policies cap covered work at a stated height, commonly around 30, 40, or 50 feet. Anything above that line is excluded. Climbers and bucket crews routinely exceed these caps on mature trees. If a limb comes down from 65 feet and your policy stops at 50, the carrier can walk. Confirm your policy's height limit in writing, and match it to the tallest trees you realistically service.

Power-line and utility proximity exclusions

Nearly every tree service policy restricts work within a set distance of energized power lines, often tied to Cal/OSHA and ANSI Z133 minimum approach distances. Electrocution and contact claims are severe, so carriers exclude line-clearance work unless it is specifically endorsed and priced. If you take on utility-adjacent trimming without the right coverage, a contact injury can be entirely on you. We cover this in depth in our power-line exclusion guide, and it deserves a separate conversation with your agent before any near-line job.

Subcontractor and uninsured-hire gaps

Tree companies scale by hiring crews and day labor, and this is where coverage quietly collapses. If you sub out work to another outfit that has no insurance, your carrier may treat their loss as yours, or deny it outright under a subcontractor exclusion. Standard requirements are simple but non-negotiable: every sub carries its own general liability and workers' compensation, names you as additional insured, and provides a certificate before work starts. Skip that paperwork and one uninsured subcontractor's accident can be charged straight to your policy, or land in the exclusion zone with no coverage at all.

The completed-operations gap

A tree you "cabled" or a limb you left improperly can fail weeks later and cause damage. Products-completed operations coverage protects you after you have left the site. Some bargain policies exclude or sharply limit it. For arborists, completed operations is not optional, because a tree failure often shows up long after the invoice is paid.

Other exclusions arborists routinely miss

• Care, custody and control: damage to the very tree or property you were hired to work on may be excluded, so read how your policy handles the item in your care.
• Use of cranes: crane-assisted removals can be excluded unless endorsed.
• Herbicide and pesticide application: chemical application often needs a separate pollution or applicator endorsement.
• Stump grinding and underground damage: hitting a buried utility line may fall under an excluded operation.
• Professional services: arborist consulting, tree-health reports, and appraisals can require professional liability, not general liability.

How to close the gaps before a claim

Get your actual scope of work in writing and match it against the exclusion pages line by line. Confirm you are covered for felling and removal, that your height limit exceeds your tallest jobs, that power-line proximity is addressed, and that subcontractor and completed-operations coverage are intact. In California you also need to align this with your CSLB license (a D-49 Tree Service classification, or C-27 for landscaping) and your workers' compensation for climbers, which rides on the very high class code 0106. An agent who writes tree service every day will read these exclusions with you rather than hand you a cheap certificate and disappear.