Key Takeaways
- An additional insured endorsement gives another party, such as a landlord or general contractor, rights under your liability policy for claims tied to your work or operations.
- Being listed as a certificate holder does not make anyone an additional insured; only an endorsement to the policy does that.
- Blanket endorsements automatically cover parties you agree in a written contract to add, while scheduled endorsements list each party by name.
- Additional insured coverage is usually limited to claims arising from your work and to what your contract requires, so the contract wording matters.
An additional insured endorsement is a change to your liability policy that extends coverage to another person or company, usually for claims arising out of your work, products, or use of their premises, says the team at Bozzuto Group, a San Diego–based specialty commercial insurance brokerage. Landlords, general contractors, distributors, and clients commonly require one before doing business with you.
What is an additional insured?
The named insured is the business that buys the policy. An additional insured is a party the named insured adds to the policy by endorsement, giving that party the right to request defense and payment from your insurer for covered claims connected to you.
For example, imagine a supplement brand that rents warehouse space. A delivery driver slips in the loading area and sues both the brand and the property owner. If the lease required the brand to name the landlord as an additional insured and the endorsement is in place, the landlord can tender the claim to the brand's insurer instead of relying solely on its own policy.
The other party is not getting the full policy. Most additional insured endorsements limit coverage to liability caused, in whole or in part, by your acts or omissions, and only to the extent the contract requires.
Is a certificate holder the same as an additional insured?
No, and this is one of the most common misunderstandings in commercial insurance. A certificate holder is simply the party who receives a certificate of insurance as proof that you carry coverage. The certificate itself is informational and does not change the policy.
Additional insured status exists only if the policy contains an endorsement that grants it. A certificate can say "additional insured" in the box, but if the endorsement is missing, the other party may have no rights under your policy. That is why sophisticated contract partners increasingly ask for a copy of the endorsement along with the certificate.
What are the main types of additional insured endorsements?
Insurers use a mix of standardized forms and their own manuscript versions. The most common categories are below.
By relationship
- Owners, lessees, or contractors (ongoing operations): covers a project owner or GC for claims arising while your work is in progress.
- Completed operations: extends coverage to that party after your work is finished, which matters because construction defect claims often surface later.
- Managers or lessors of premises: protects a landlord for claims arising from the part of the premises you lease.
- Vendors: protects a retailer or distributor that sells your products, for claims arising from those products.
- Lessor of leased equipment: protects a company that leases equipment to you.
By how parties are added
| Feature | Scheduled endorsement | Blanket endorsement |
|---|---|---|
| How parties are added | Each party is listed by name on the endorsement | Any party you agree to add in a written contract qualifies automatically |
| Administrative work | Requires a policy change for every new party | Usually no change needed per contract |
| Best for | Few, stable relationships such as one landlord | Contractors, distributors, and vendors with many partners |
| Watch for | Delays if an endorsement is not issued before work starts | Requirement that the written contract be signed before the loss |
When do you need an additional insured endorsement?
You generally need one whenever a contract asks for it. Typical situations include:
- Signing a commercial lease, where the landlord wants protection from slip-and-fall and similar claims.
- Working as a subcontractor, where the GC and project owner require ongoing and completed operations coverage.
- Selling through retailers, distributors, or marketplaces that require vendor coverage under your product liability insurance.
- Renting venues for events or leasing heavy equipment.
- Signing master service agreements with larger corporate clients.
Additional insured requests are not limited to general liability. Contracts often require the same party to be added to your commercial auto and umbrella policies, and your umbrella policy should follow form so the additional insured has access to those higher limits.
What should you check in the contract?
Additional insured coverage is only as broad as the policy form and the contract allow. Before you sign, compare the contract's insurance clause with your endorsements and look for:
- Ongoing and completed operations: does the contract require both?
- Primary and noncontributory language: does your endorsement allow your policy to respond first?
- Who must be named: owners, lenders, property managers, and affiliates may all be listed.
- Duration: completed operations may need to stay in place for years after the job.
- Indemnity alignment: your insurer typically will not pay more than the contract obligates you to cover, and state anti-indemnity laws may further limit it. Consult your attorney on the indemnity clause itself.
How Bozzuto Group Helps
We review leases, subcontracts, vendor agreements, and service contracts against your actual policy forms, not just your certificates. Where it makes sense, we seek blanket additional insured endorsements that cover ongoing operations, completed operations, and vendors, along with primary and noncontributory wording, so you are not requesting a new endorsement for every deal. When a partner asks for something your policy cannot provide, we explain the gap in plain terms so you can negotiate the clause or adjust coverage before signing.
Have a contract with insurance requirements you are not sure you meet? Call 858-805-1865 or contact our team to send it over for review.
Frequently Asked Questions
What does it mean to be named as an additional insured?
Being named an additional insured means another company's liability policy has been endorsed to give you rights under it, usually for claims arising from that company's work, products, or operations. If you are sued over something they did, you can ask their insurer to defend you. Coverage is typically limited to the scope of the endorsement and the underlying contract.
Does adding an additional insured cost extra?
Sometimes. Many carriers include blanket additional insured endorsements in contractor and product liability packages at little or no additional premium, while others charge a flat fee per scheduled party. Broader forms, such as completed operations or primary and noncontributory wording, may also affect price. Costs depend on the carrier and policy wording, so ask your broker before agreeing to a contract.
Is a certificate of insurance proof of additional insured status?
No. A certificate of insurance is informational and does not amend the policy. Additional insured status exists only if the policy includes an endorsement granting it. If you need to confirm that you are an additional insured on someone else's policy, ask for a copy of the endorsement itself, not just the certificate.
What is the difference between blanket and scheduled additional insured?
A scheduled endorsement lists each additional insured by name, so every new party requires a policy change. A blanket endorsement automatically includes any party you are required to add by a written contract, which saves time for businesses with many clients or projects. Blanket forms usually require the contract to be signed before the loss occurs.
Can an additional insured make a claim against my policy?
Yes, for covered claims within the scope of the endorsement. An additional insured can tender a lawsuit to your insurer, which may then defend and indemnify them. These claims can affect your loss history and future premiums, which is one reason to review additional insured requests carefully and make sure your limits are adequate for the parties you add.