CG 20 11: Additional Insured for Managers or Lessors of Premises Explained

CG 20 11 adds the landlord or property manager listed in its schedule as an additional insured on a tenant's commercial general liability policy. Its protection is tied to the tenant's leased space, and the edition date changes how closely a claim must connect to the tenant's conduct. It does not replace the landlord's own property or liability insurance.

The practical chain is simple: a lease requires additional insured status, the policy receives CG 20 11, a premises claim names the landlord or manager, and the endorsement determines whether that party can seek coverage under the tenant's CGL policy.

What does CG 20 11 cover?

CG 20 11 modifies the CGL policy's insured provisions for a specific landlord, property manager, or both. Earlier editions frame the grant around liability arising from the ownership, maintenance, or use of the scheduled portion of the premises leased to the named insured. A New York court applying the 01 96 edition treated the identity of the landlord and the location of the accident as central coverage questions.^[1]

The form can address a familiar premises claim. If a customer is injured inside a tenant's shop and sues both the tenant and building owner, the owner may tender the suit under the tenant's policy. Coverage still depends on the attached edition, the schedule, the allegations, and the rest of the policy. Additional insured status gives the scheduled party policy rights for covered claims, but it does not make that party the named insured or create a separate limit.

What does CG 20 11 leave out?

CG 20 11 has firm boundaries. The scheduled party's status concerns only the leased part of the premises shown in the endorsement. The form excludes occurrences after the named insured stops being a tenant there. It also excludes structural alterations, new construction, or demolition performed by or for the additional insured, which means a landlord's separate renovation project does not become the tenant's insured operation.

The endorsement is liability coverage, not building insurance. It does not insure the landlord's structure against fire, water, or other physical damage, and it does not satisfy a tenant's obligation to insure improvements or business personal property. Those issues belong in the lease's property insurance section and the applicable commercial property forms.

Why does the edition date matter?

The edition date can change the result. The 01 96 edition uses the broad premises connection described in the New York court decision. The 04 13 edition added limits tied to applicable law and, when a contract requires coverage, to the breadth and amount the contract requires. The 12 19 edition added a causation condition: the tenant or someone acting on the tenant's behalf must cause the injury or damage in whole or in part.^[4] A 2023 insurer filing identifies CG 20 11 12 19 by its official title and ISO filing reference.^[2]

That distinction matters when a claim alleges only the landlord's independent negligence. Do not assume an older lease form number and a current endorsement produce identical protection. Compare the exact edition required by the lease with the endorsement the carrier can issue, then read any carrier-specific changes.

What should a tenant check before sending proof?

A tenant should compare three documents: the lease, the endorsement, and the certificate. The endorsement schedule should identify the correct legal entities and the exact leased premises. The lease may also require primary and noncontributory treatment, which is a separate insurance-order issue often handled through CG 20 01.

The City of Arcata's insurance page illustrates the difference between evidence and coverage. It asks users to follow the signed contract or permit and lists CG 20 11 01 96 as a sample managers or lessors endorsement.^[3] A certificate can report that an endorsement exists, but the certificate cannot add a missing landlord, repair the wrong address, or broaden the edition.

Frequently asked questions

Does CG 20 11 insure the landlord's building?

No. CG 20 11 concerns the landlord's or manager's liability as an additional insured under the tenant's CGL policy. Property insurance for the building, tenant improvements, and business personal property is handled separately.

Does CG 20 11 cover the landlord after the tenant moves out?

The standard form excludes occurrences that happen after the named insured stops being a tenant at the scheduled premises. A claim reported later may still require analysis of when the occurrence happened and which edition was attached.

What changed in CG 20 11 12 19?

The 12 19 edition requires the injury or damage to be caused in whole or in part by the tenant or someone acting on the tenant's behalf. That is narrower than treating any liability connected with the leased premises as sufficient.

Is a certificate showing the landlord as additional insured enough?

No. The attached endorsement and its schedule control. Ask for the endorsement when proof matters, then confirm the legal name, premises, edition, and any separate primary and noncontributory requirement.

This guide is for educational purposes and summarizes standard ISO policy concepts in original language. Form numbers and titles are used only for identification. Menlo Insurance Services is not affiliated with or approved by Insurance Services Office, Inc. Your policy, lease, and attached endorsements control. Talk to a licensed broker about your actual exposures.