Additional Insured vs Certificate Holder: The Difference That Costs Landlords Money

Look at the bottom-left box of any certificate of insurance and you will find your own name under "CERTIFICATE HOLDER". It looks like protection. It reads like protection. It is not protection.

This is the single most expensive misunderstanding in vendor insurance compliance, and it is entirely avoidable once you know what each term does.

Certificate holder: you are on the mailing list

Being named certificate holder means one thing: you are the party the certificate was issued to. It confirms that, on the day the form was printed, a policy existed with the limits shown.

What it does not do:

• It does not give you any rights under the vendor's policy.
• It does not let you make a claim against that policy.
• It does not guarantee you will be notified if the policy is cancelled. Modern ACORD forms explicitly water this down — the notice provisions are governed by the policy itself, not the certificate.
• It does not prove the policy is still in force one day after issue.

Additional insured: you are on the policy

Additional insured status is different in kind, not degree. When your entity is added as an additional insured — by endorsement, not just by a line on the certificate — the vendor's insurer extends coverage to you for liability arising out of that vendor's work.

In practice that means:

• Defense costs. If you are named in a lawsuit over the vendor's work, their insurer pays to defend you. Legal defense alone often exceeds the eventual settlement.
• Indemnity. Covered damages are paid under their policy, protecting your own loss history.
• Your policy stays clean. Claims that route through the vendor's insurance do not drive your renewal premium.

The endorsement is the proof — not the certificate

Here is the trap. A vendor's broker can type your company name into the description box of a certificate and write "Certificate holder is additional insured." That sentence, by itself, adds nothing. The certificate does not amend the policy.

What actually creates the status is an endorsement attached to the vendor's general liability policy. Common forms include CG 20 10 (ongoing operations) and CG 20 37 (completed operations). Ask for a copy of the endorsement page, not just the certificate. If the vendor cannot produce one, the status does not exist.

Ongoing vs completed operations

CG 20 10 covers you while the work is in progress. CG 20 37 covers you after the vendor has finished and left. A roof that leaks eight months after installation is a completed-operations claim, and if you only hold the ongoing-operations endorsement, you are uncovered for exactly the scenario most likely to happen. Request both.

What to put in your vendor agreement

Language belongs in the contract, because the contract is what obliges the vendor to buy it. A workable clause asks for four things:

• Name the exact legal entities to be added — the ownership entity, the management company, and any lender required by the loan documents. "The landlord" is not a legal entity.
• Require additional insured status on a primary and non-contributory basis, so their policy responds first and yours is not tapped alongside it.
• Require a waiver of subrogation in your favour, so their insurer cannot pay a claim and then come after you to recover it.
• Require delivery of the certificate and the endorsement pages before work begins, and at every renewal.

The one habit that makes this work

Getting the endorsement right at onboarding is worth little if the policy lapses in month seven and nobody notices. Additional insured status expires with the policy that grants it.

So the discipline is twofold: demand the endorsement up front, then track the expiration date of every policy that carries one. The first is a contract problem. The second is a memory problem — and memory problems are the ones software is genuinely good at solving.