ISO Form CG 20 11 is a general liability endorsement that adds a property owner or property manager as an additional insured on a commercial tenant’s CGL policy, giving the landlord access to the tenant’s coverage for lawsuits connected to the leased space. Most commercial leases require it, and most landlords assume it does more than it does. The real scope depends on the edition date, the accuracy of the schedule, a handful of built-in exclusions, and whether companion endorsements are attached alongside it.
What the Endorsement Actually Covers
CG 20 11 grants additional insured status to the landlord or property manager named on the schedule, but only for liability connected to the ownership, maintenance, or use of the specific portion of the premises the tenant leases.1Independent Insurance Agents of Texas. CG 20 11 04 13 – Additional Insured – Managers or Lessors of Premises A customer who slips inside your leased retail space generates a claim the landlord can tender to your CGL insurer. The connection between the injury and the leased footprint is what triggers coverage.
Courts generally read the phrase “arising out of” broadly, requiring only a general causal connection between the tenant’s premises and the alleged injury rather than direct fault by the tenant. A customer tripping on merchandise you stacked near the door clearly fits. A delivery driver hurt in a shared loading dock might fit if the dock serves your leased area. The farther the incident sits from your actual footprint, the weaker the argument gets.
Common areas are the usual sore spot. If a visitor is hurt in a parking lot, lobby, or hallway that your lease does not specifically assign to you, the endorsement may not respond. Coverage tracks the space described in the schedule, not the whole property. Landlords who want protection for shared spaces have to see those areas written into the lease and the schedule, or carry separate coverage for them.
Who Can Be Added
The form is built for two kinds of parties. A lessor owns the property and grants you the right to occupy it. A manager is a third-party firm the owner hires to run daily operations, handle maintenance requests, collect rent, and coordinate vendors. Both face exposure when someone is injured on the property, and both can appear on the same endorsement.
A written contract or lease must obligate the tenant to provide the coverage. The endorsement states that the insurance afforded to the additional insured will not be broader than what the contract requires.1Independent Insurance Agents of Texas. CG 20 11 04 13 – Additional Insured – Managers or Lessors of Premises If the lease is silent on insurance, the insurer owes nothing to the landlord no matter what the schedule says.
Entity naming is where claims get denied. When the property is held by an LLC, the schedule needs the LLC’s full legal name, not the name of a managing member. When a trust holds title, the trust itself is what belongs on the schedule. Insurers compare the entity listed against the entity making the claim, and a mismatch is grounds to walk away. Pull the name from the lease signature block or your state’s corporate filings before the schedule is finalized.
Filling Out the Schedule
The schedule has two fields, and errors in either one can void the landlord’s protection.
The first field is the name of the person or organization being added. Use the exact legal name as it appears on the lease and on state corporate filings. A trade name, abbreviation, or officer’s name instead of the entity itself gives the insurer an opening.
The second field is the designation of premises. A street address alone is not enough. If you lease Suite 405 of a multi-tenant building, the schedule should say “Suite 405” or whatever unit identifier the lease uses. The same goes for warehouse bays, storage areas, and floor designations. The insurer is accepting risk for the space you actually control, and vague descriptions invite disputes over whether a given incident falls inside the covered area.1Independent Insurance Agents of Texas. CG 20 11 04 13 – Additional Insured – Managers or Lessors of Premises
Multiple units or buildings each need to appear on the schedule. The form’s instructions note that anything not shown on the endorsement will instead appear in the policy declarations, so confirm with your agent that every location is documented somewhere in the policy.1Independent Insurance Agents of Texas. CG 20 11 04 13 – Additional Insured – Managers or Lessors of Premises Tenants who relocate within the same building often forget to update the schedule, which opens a coverage gap the moment they move.
Why the Edition Date Matters
The edition date printed in the corner of the form changes the trigger for coverage. Two editions are in common circulation.
The 04 13 edition grants additional insured status for liability “arising out of the ownership, maintenance or use” of the leased premises.1Independent Insurance Agents of Texas. CG 20 11 04 13 – Additional Insured – Managers or Lessors of Premises Courts tend to read that phrase broadly, which is friendlier to the landlord because coverage can apply even when the tenant’s actions were only loosely connected to the injury.
The 12 19 edition tightened the language. It covers liability “caused, in whole or in part, by” the tenant or those acting on the tenant’s behalf in connection with the ownership, maintenance, or use of the premises.2Nationwide Excess and Surplus. CG 20 11 12 19 – Additional Insured – Managers or Lessors of Premises “Caused” demands a more direct link between the tenant’s conduct and the injury. Under this edition, the landlord has a harder time triggering coverage when the tenant played no real role in what went wrong.
The 12 19 edition also extends coverage to personal and advertising injury claims, not just bodily injury and property damage.2Nationwide Excess and Surplus. CG 20 11 12 19 – Additional Insured – Managers or Lessors of Premises That addition matters for allegations like false arrest or wrongful eviction brought against the landlord in connection with the tenant’s operations.
If you are a landlord reviewing a tenant’s certificate, check the edition date. If the lease was written expecting the broader “arising out of” trigger and the insurer attached the 12 19 edition, your coverage is narrower than you bargained for. Tenants should confirm which edition their insurer uses before signing.
What the Endorsement Does Not Cover
Every edition carves out explicit exclusions, and the form has a few implicit limits that are just as important.
Structural Work by the Landlord
Liability from structural alterations, new construction, or demolition performed by or on behalf of the landlord is excluded.1Independent Insurance Agents of Texas. CG 20 11 04 13 – Additional Insured – Managers or Lessors of Premises If the landlord hires a crew to renovate the exterior and a pedestrian is injured by falling debris, the tenant’s policy will not respond. The tenant did not create the hazard, so the tenant’s insurer is not asked to pay for it.
Claims After the Tenancy Ends
Coverage ends the moment you stop being a tenant in the premises.1Independent Insurance Agents of Texas. CG 20 11 04 13 – Additional Insured – Managers or Lessors of Premises If someone is injured after your lease expires or after you vacate, the landlord cannot look to your former policy. Completed operations coverage would be the usual answer to that gap, and CG 20 11 does not provide it.
A Property Manager’s Professional Errors
Because the endorsement only reaches liability tied to the physical ownership, maintenance, or use of the premises, it does not pick up a property manager’s professional mistakes. Negligent contractor screening, mishandled security protocols, or administrative errors fall under professional liability or errors-and-omissions coverage, not a tenant’s CGL endorsement. Property managers need their own professional liability policy for that exposure.
Areas Off the Schedule
If the schedule lists only “Retail Bay 10,” the landlord cannot seek coverage for an incident in Retail Bay 20. The boundary is rigid, and the only way to prevent gaps is to keep the schedule accurate as tenants expand, contract, or move within a property.
The Landlord’s Sole Negligence
Several states have anti-indemnity statutes that void any contractual requirement to insure or indemnify another party for that party’s own sole negligence. In those states, if the landlord is 100 percent at fault and the tenant played no role at all, the additional insured endorsement may be unenforceable regardless of what the lease says. Some courts have held that requiring additional insured coverage for the landlord’s sole negligence is effectively a back-door indemnity agreement, void under the state’s anti-indemnity law even when the statute does not mention insurance by name. Others allow it only when the contract explicitly states the intent to cover the additional insured’s own negligence. CG 20 11 works best in shared-fault scenarios, where the tenant’s use of the premises contributed to the injury.
Companion Endorsements the Lease Usually Also Requires
CG 20 11 is one piece of a larger insurance package. Three companion endorsements close gaps the additional insured form leaves open.
Primary and Non-Contributory
Most leases require the tenant’s policy to be “primary and non-contributory.” Without this language, both insurers may argue the other should pay first, delaying the landlord’s defense while the carriers sort it out.
The ISO form that handles this is CG 20 01, a separate endorsement that modifies the “Other Insurance” clause in the CGL policy. It states that the tenant’s insurance is primary and will not seek contribution from any other policy available to the additional insured. Two conditions must be met: the additional insured must be a named insured on their own separate policy, and the tenant must have agreed in writing to provide primary, non-contributory coverage.3Independent Insurance Agents of Texas. CG 20 01 04 13 – Primary and Noncontributory – Other Insurance Condition The tenant’s insurer then picks up defense costs and pays any judgment or settlement first, and the landlord’s own policy only engages if those limits are exhausted. If the lease requires primary, non-contributory coverage, confirm the agent attaches CG 20 01 alongside CG 20 11.
Waiver of Subrogation
After an insurer pays a claim, it normally has the right to pursue anyone else who may share responsibility. Being an additional insured provides some protection because insurers generally cannot subrogate against their own insureds, but that protection reaches only losses actually covered by the endorsement. For a claim outside the CG 20 11’s scope, the insurer could still pursue the landlord to recoup what it paid.
The fix is ISO form CG 24 04, which waives the insurer’s right of recovery against the person or organization shown on its schedule for payments made under the policy.4Insurance Services Office. CG 24 04 12 19 – Waiver of Transfer of Rights of Recovery Against Others to Us The waiver applies only if the tenant agreed to it in writing before the loss occurred.
Notice of Cancellation
If the tenant’s policy is canceled or lapses, the landlord needs to know in time to require reinstatement or arrange its own coverage. Standard CGL policies send cancellation notice to the named insured, not to additional insureds. A notice of cancellation endorsement puts the landlord on the list of parties entitled to advance written notice before the policy terminates. Without it, the landlord may not learn coverage disappeared until a claim arrives.
Verifying the Coverage Actually Exists
Landlords routinely collect certificates of insurance from tenants and file them away. A certificate confirms a policy existed on the date it was issued and that an additional insured endorsement was attached. It does not guarantee coverage will be there when a claim is filed months or years later, and the certificate holder has no right to enforce the policy based on the certificate alone.
To verify real coverage, request a copy of the endorsement itself, confirm the schedule lists the correct legal entity and premises designation, and check the edition date. Reviewing the actual endorsement language at the start of the lease is the only reliable check.
A tenant who does not comply with the lease’s insurance requirements is typically in material default. Courts have treated the failure to maintain required insurance as an incurable breach, reasoning that a policy purchased after the fact cannot protect the landlord against claims that arose during the gap. Send the endorsement request to your agent as soon as you sign the lease, and set renewal reminders so the coverage follows the lease all the way through.