Tree Service Certificate of Insurance (COI): Complete Guide

A tree service certificate of insurance (COI) proves to your clients, municipalities, and contracting parties that you carry the coverage your contract requires. Most tree service operations encounter COI requirements daily — and most operators have been burned at least once by a missing endorsement, expired policy, or wrong form. This guide explains exactly what a tree service COI is, what contracts require, the audit gaps that cause coverage failures, and how to deliver a clean COI within hours instead of days.

If you’ve ever lost a job because you couldn’t produce a COI fast enough, had a contract rejected because your additional insured form was the wrong version, or been asked for “primary and non-contributory” language and didn’t know what it meant — this is the reference that fixes it.

What Is a Tree Service Certificate of Insurance?

A tree service certificate of insurance is a one-page document on the standardized ACORD 25 form that summarizes your business insurance coverage and is issued to a specific client (the “certificate holder”) as proof that coverage exists. The COI is issued by your insurance agent — never by you directly — and includes:

• Your business name and address (the “Named Insured”)
• The certificate holder’s name and address
• Each policy you carry: general liability, workers’ compensation, commercial auto, umbrella, and any other relevant coverage
• Policy numbers and effective/expiration dates
• Coverage limits for each policy
• Any required endorsements (additional insured, primary and non-contributory, waiver of subrogation)
• The agent’s contact information for verification

The COI is informational only — it does not create or modify coverage. The actual coverage exists in your underlying insurance policies. The COI simply confirms the policies are in force on the date issued. This distinction matters because contracts and contract holders sometimes assume COI language alone provides coverage. It doesn’t. Coverage only exists if the underlying policy has the required endorsements.

When Tree Service Contractors Need a COI

Tree service operations encounter COI requirements in five main scenarios:

1. Residential clients (occasional): Most homeowners don’t request COIs, but high-value property owners, HOAs, and property managers managing rentals routinely require them. Required limits typically run $1M general liability per occurrence.

2. Commercial property managers: Office buildings, retail centers, apartment complexes, and industrial properties almost always require COIs before tree work begins. Required limits typically run $1M to $2M general liability per occurrence with the property management company and property owner named as additional insureds.

3. Municipal and government contracts: Cities, counties, and state agencies have detailed COI requirements that vary by jurisdiction. Required limits typically run $1M to $5M general liability with specific additional insured endorsements (often ISO form CG 20 12 or CG 20 26) plus primary and non-contributory wording. Some cities maintain approved tree service provider registries that require ongoing COI compliance.

4. Utility line clearance contracts: Power utility contracts (Duke Energy, ComEd, Dominion Energy, etc.) carry the most demanding COI requirements in tree care — typically $5M to $10M umbrella, specific line-clearance certifications (EHAP), and detailed indemnification language.

5. Subcontractor relationships: When you sub for a larger tree service or general contractor, the prime contractor will require your COI as a condition of working on their projects.

Understanding which scenario you’re operating in tells you what limits and endorsements your COI needs to show. Sending a $1M COI to a municipal contract that requires $3M is a guaranteed delay.

Anatomy of a Tree Service COI: What Every Section Means

The ACORD 25 form is standardized — every COI from every carrier has the same layout. Reading it correctly means knowing what each section confirms.

Producer (top left): Your insurance agent or agency. The certificate holder calls this number to verify the COI is real. If the producer information is missing or matches a free email service, the COI is likely fraudulent.

Insured (top center): Your business legal name and address. This must exactly match the legal entity in the contract. Operating as “John Smith Tree Service LLC” but having a COI issued to “John Smith dba Smith Tree Service” creates a coverage mismatch that auditors flag.

Insurer(s) Affording Coverage (right side): Each insurance carrier providing coverage. Look at the A.M. Best rating — most contracts require carriers rated “A-” (Excellent) or better with a financial size category of VIII or higher. If your carrier doesn’t meet the contract’s rating threshold, your COI will be rejected.

Coverages section (main body): Each line shows a separate policy with policy number, effective date, expiration date, and limits. The most important columns for tree service contracts:

• General Liability: Each occurrence, general aggregate, products-completed operations aggregate, personal & advertising injury
• Automobile Liability: Combined single limit (or separate bodily injury and property damage)
• Umbrella/Excess Liability: Per occurrence and aggregate
• Workers’ Compensation: Each accident, disease policy limit, disease each employee — required by law in 47 states under class code 0106

Description of Operations (bottom): Free-text field where additional insured language, primary and non-contributory wording, and project-specific notes appear. This is where most COI compliance issues hide. Auditors check this section against contract requirements line-by-line.

Certificate Holder (bottom left): The party receiving the COI. The exact legal name and address must match what the contract specifies.

Authorized Representative (bottom right): The agent’s signature confirming authority to issue the certificate.

Additional Insured: The Most Important COI Concept

When a contract says “name [Client] as additional insured on your general liability policy,” it means [Client] gets coverage under your policy for claims arising from your work. This protects the client from claims their own policy might otherwise have to defend.

The critical distinction most tree service owners miss: Adding “additional insured” to the description section of a COI does not create coverage. Coverage only exists when the underlying general liability policy has an actual additional insured endorsement attached. The endorsement is the legal document that extends coverage. The COI is just paperwork that summarizes the endorsement exists.

This creates a common compliance gap: a COI shows additional insured wording, but the policy itself has no endorsement. When a claim arises, the carrier denies coverage because the endorsement was never actually issued. The contractor faces personal liability and the client sues for misrepresentation.

Always confirm with your agent that the actual endorsement is on the policy before issuing a COI claiming additional insured status.

Common Additional Insured Forms in Tree Service Contracts

Different forms provide different coverage. Knowing which form your contract requires saves you from rejected COIs:

ISO CG 20 10 — Additional Insured – Owners, Lessees or Contractors – Scheduled Person Or Organization (Ongoing Operations): Covers the additional insured for liability arising from your ongoing operations. The most common form for commercial contracts. Newer versions (10 01, 04 13) provide broader coverage than older versions (07 04, 11 85). Some contracts specify a particular version — older CG 20 10 forms may not satisfy modern contract requirements.

ISO CG 20 37 — Additional Insured – Owners, Lessees or Contractors – Completed Operations: Extends coverage to claims arising from work after completion. Increasingly required alongside CG 20 10 because completed operations claims (a tree falling six months after pruning) are common in tree service. If your contract requires both ongoing and completed operations coverage, you need both forms.

ISO CG 20 12 — Additional Insured – State or Political Subdivision – Permits: Used when a municipality issues a permit for the work. Required by many city forestry departments and public works contracts. The City of Seattle, for example, specifically requires CG 20 12 (version 05 09 or newer).

ISO CG 20 26 — Additional Insured – Designated Person or Organization: A general-purpose form used when CG 20 10 or CG 20 12 don’t fit. Some carriers prefer CG 20 26 because it offers broader carrier flexibility on the underlying coverage scope.

Blanket Additional Insured Endorsements: Carrier-specific forms that automatically extend additional insured status to any party your contract requires it for. Eliminates the need for individual scheduled endorsements. Costs typically $250–$750 per year and are highly recommended for operations with multiple commercial contracts.

What It Costs to Add Additional Insureds

According to Insurance Information Institute industry data, individual additional insured endorsements typically cost $25 to $100 per endorsement, depending on carrier and form type. Tree service operations bidding on multiple commercial contracts should factor this into project pricing — adding 10 individual additional insureds across a year adds $250–$1,000 in endorsement fees.

Blanket endorsements are typically more economical for operations with five or more commercial contracts annually. Ask your agent about blanket endorsement options before paying for individual endorsements one at a time.

Primary and Non-Contributory: The Other Critical Endorsement

“Primary and non-contributory” (often abbreviated P&NC) is contract language requiring your insurance to pay first on any covered claim, with no contribution from the client’s own policy. This protects the client by ensuring your coverage responds to claims arising from your work — they don’t want their insurance involved at all.

Without P&NC, your policy and the client’s policy might both respond to a claim and contribute proportionally. Carriers can dispute coverage allocation, claim handling slows down, and the client’s insurance experience modifier gets affected even though your work caused the loss.

Most municipal contracts, commercial property contracts, and federal facility contracts now require P&NC language. The endorsement is added via specific ISO forms (such as CG 20 01) or carrier-specific endorsements. The wording must appear in the COI’s Description of Operations section AND be backed by an actual policy endorsement.

Waiver of Subrogation

Subrogation is your insurance carrier’s right to sue a third party who caused a loss. A waiver of subrogation gives up that right — meaning if a claim happens that was partly the client’s fault, your carrier won’t go after the client to recover. Clients require this because they don’t want their own insurance affected by a claim arising from your work, even if their actions contributed.

Most commercial and municipal contracts now require waiver of subrogation on at least general liability and workers’ compensation. The endorsement is added to your underlying policies and noted on the COI.

State-Specific COI Considerations for Tree Service

While the ACORD 25 form is national, state-specific factors affect how COIs are reviewed and what limits are required:

Indiana, Ohio, Michigan, and Illinois: Standard ACORD 25 process. Indiana and Ohio operations should pay special attention to workers’ compensation COI requirements — Ohio’s monopolistic state fund means workers’ comp appears on a separate certificate from BWC, plus Stop-Gap coverage from the private carrier on the standard COI.

Florida: Workers’ comp COIs are heavily scrutinized due to the state’s exempt-status fraud history. Some carriers require a separate workers’ comp certificate distinct from the main ACORD 25 to verify exempt status of officers.

Texas: Workers’ comp is voluntary, so contracts often specify whether non-subscriber status is acceptable. Most commercial contracts in Texas now require workers’ comp despite the voluntary status, treating non-subscriber operations as higher-risk.

Pennsylvania: Pennsylvania uses the Pennsylvania Compensation Rating Bureau (PCRB) instead of NCCI for workers’ comp classification. COIs from PCRB-rated policies are equivalent to NCCI policies but use slightly different code references.

Kentucky: Standard NCCI process. Distillery and horse farm contracts often require higher GL limits ($2M–$5M) due to the high-value property exposure.

Georgia, North Carolina, and Virginia: North Carolina uses NCRB instead of NCCI; the practical COI implications are minimal but contract reviewers may flag the difference. Virginia DPOR contractor licensing requires COIs on file for any contract over $1,000, with strict additional insured requirements for state government contracts.

How to Deliver a Tree Service COI in Under Two Hours

When a client says “I need your COI before you can start,” here’s the workflow that gets it done same-day:

Step 1 (5 minutes): Get the certificate holder information from the client:

• Exact legal entity name (verify capitalization, “LLC” vs “Inc.” vs “Corp.”)
• Mailing address for the certificate holder
• Email address for delivery
• Any project number or job reference

Step 2 (5 minutes): Get the contract’s insurance requirements section. Most contracts have a section explicitly listing required limits and endorsements. If you don’t have the contract, ask the client to email the insurance requirements directly.

Step 3 (10 minutes): Email your insurance agent with the certificate holder info, contract requirements, and any project-specific details. Most agents respond within 1–2 hours during business hours and issue the COI same-day.

Step 4 (verification): When the COI arrives, check before forwarding:

• Certificate holder name and address match the client’s request exactly
• All required limits meet or exceed contract requirements
• All required endorsements appear in the Description of Operations section
• All policy expiration dates are at least 30 days after the project completion date
• The Authorized Representative signature is present

Step 5 (delivery): Forward the COI to the client. Some clients prefer email delivery; municipalities often require upload to specific portals (Seattle, Portland, etc.).

Pro tip for high-volume operations: Set up blanket additional insured and primary/non-contributory endorsements at policy inception, not per-job. This lets your agent issue COIs within minutes for any client that requires those endorsements, rather than 24–48 hours for individual endorsements.

The Five Most Common Tree Service COI Compliance Failures

These are the issues that cost contractors jobs, money, and time:

1. Expired Certificate When Renewal Hits Mid-Project

Your policy renews April 1. A commercial client requested a COI in February. The COI shows your policy expiring April 1. On April 2, the client’s compliance system flags the expired COI and halts your work in progress until you provide a renewal certificate. Fix: Set a calendar reminder 60 days before any policy renewal to request fresh COIs from your agent and proactively send updated certificates to all active commercial clients.

2. Wrong Additional Insured Form Version

The contract requires CG 20 10 version 04 13 or newer. Your COI shows CG 20 10 version 11 85 — an older version that provides less coverage. The client rejects the COI. Fix: Ask your agent specifically which version of each ISO form your policy uses. If the version is outdated, request an endorsement upgrade. Newer versions are typically available at the same cost.

3. Additional Insured Listed in Description Without Actual Endorsement

The COI says “[Client] is named as additional insured per CG 20 10.” The policy doesn’t actually have a CG 20 10 endorsement. A claim arises. The carrier denies coverage. The client sues for misrepresentation. Fix: Verify with your agent that every endorsement listed in the Description of Operations section is backed by an actual policy endorsement. Request copies of the endorsements for your records.

4. Coverage Limits Below Contract Requirements

Contract requires $2M general liability per occurrence. Your COI shows $1M. The client rejects. Fix: Read contract insurance requirements before bidding the work. If the limits required exceed your existing coverage, ask your agent about per-project endorsements that increase limits temporarily for specific jobs — usually cheaper than permanently raising your overall limits.

5. Wrong Certificate Holder Name

The contract is with “ABC Properties LLC.” Your COI lists “ABC Properties” as certificate holder. Compliance systems flag the mismatch. The COI is rejected and re-issued, delaying the job by 1–2 days. Fix: Get the exact legal entity name from the contract or W-9 before requesting the COI. Don’t rely on what the client tells you verbally — get it in writing from the contract.

Coverage Considerations Beyond General Liability

Most contracts focus on general liability, but tree service COIs typically include four to six coverage lines. Each has its own contract requirements:

• General Liability: Almost always required. Limits typically $1M–$5M.
• Workers’ Compensation: Required by law in 47 states. Most contracts require statutory limits plus $1M employer’s liability.
• Commercial Auto: Required when company vehicles will be on client property. Limits typically $1M combined single limit.
• Umbrella / Excess Liability: Increasingly required for municipal and utility contracts. Limits typically $5M–$10M.
• Inland Marine: Sometimes required for high-value job sites where damage to your equipment could affect project completion.
• Pesticide & Pollution: Required when herbicide or pesticide treatment is part of the scope.

For tree removal, tree trimming and pruning, and stump grinding operations, the specific coverage mix varies by service. Tree removal operations typically need higher umbrella limits due to the catastrophic-claim potential. Tree trimming operations particularly benefit from professional liability coverage for improper-pruning claims that aren’t covered by general liability.

For a complete breakdown of what tree service insurance costs, see our tree service insurance cost guide.

Frequently Asked Questions

What is a tree service certificate of insurance?

A tree service certificate of insurance (COI) is a one-page document on the standardized ACORD 25 form that summarizes your business insurance coverage — including general liability, workers’ compensation, commercial auto, and umbrella limits. Tree service COIs are required by most commercial clients, municipalities, and property managers as proof of coverage before work begins. The COI is issued by your insurance agent, lists the certificate holder (the client requesting it), and shows policy numbers, limits, and effective dates.

How do I get a certificate of insurance for my tree service?

Contact your insurance agent and request a COI for the specific client or contract. Most agents issue COIs within 1 to 24 hours during business hours at no charge. You’ll need to provide the certificate holder’s exact legal name, mailing address, and any specific endorsements the contract requires (additional insured, primary and non-contributory, waiver of subrogation). The agent emails the COI as a PDF that you forward to your client.

How much does it cost to add an additional insured to a tree service policy?

Adding an additional insured to a tree service general liability policy typically costs $25 to $100 per endorsement, depending on the carrier and the type of additional insured form required. Blanket additional insured endorsements (covering all required parties under one endorsement) often cost $250 to $750 per year and are more economical for operations with multiple commercial contracts.

What is primary and non-contributory in a tree service COI?

Primary and non-contributory is contract language requiring your tree service policy to pay first on any claim, with no contribution from the client’s own insurance. This protects the client by ensuring your coverage responds before theirs. Most municipal contracts and commercial property contracts require primary and non-contributory wording. The endorsement is added via specific ISO forms such as CG 20 01 or carrier-specific equivalents.

What is the difference between additional insured and certificate holder?

A certificate holder is simply the party receiving notification of your policy and any cancellations. An additional insured has actual coverage extended under your policy via an endorsement. Certificate holder status provides notification only — no coverage. Additional insured status provides coverage for claims arising from your work, but only when backed by an actual policy endorsement, not just notation on the certificate. Verify endorsements exist before assuming additional insured status is real.

What forms are used for additional insured on tree service COIs?

The most common ISO additional insured forms for tree service contractors are CG 20 10 (ongoing operations), CG 20 37 (completed operations), CG 20 12 (state or political subdivision permits), and CG 20 26 (designated person or organization). Municipal contracts typically require CG 20 12 (version 04 13 or newer) or CG 20 26. Commercial contracts typically require both CG 20 10 and CG 20 37 to cover both ongoing work and post-completion liability.

Get a Tree Service Insurance Policy That Delivers Clean COIs Fast

The reality of tree service insurance: the policy you buy determines how fast and cleanly your COIs get issued. Operations with carriers that specialize in tree care — Amerisafe, West Bend, ICW Group, and others — typically receive COIs within hours, with all common endorsements already on the policy at inception. Operations with generalist carriers often wait days for endorsements that should be standard.

If you’re losing jobs to slow COI turnaround, getting rejected for outdated endorsement forms, or paying high per-endorsement fees because you don’t have a blanket endorsement — your policy structure is the problem, not your agent’s response time.

TreeGuard structures policies for tree care operations specifically. We carry blanket additional insured and primary/non-contributory endorsements at inception on every policy we write, so COIs issue within hours instead of days. Most quotes come back within 1–2 hours during business hours.

External resources for further reference: ACORD 25 form documentation, Insurance Information Institute commercial insurance guidance, TCIA tree care safety standards, and OSHA tree care guidance.