CG 20 33: Additional Insured, Owners, Lessees or Contractors, Automatic Status When Required in Construction Agreement With You

Legal purpose and coverage scope

CG 20 33 amends Who Is An Insured to include any person or organization for whom the named insured is performing operations when the named insured and that person or organization have agreed in writing, in a contract or agreement, that it be added as an additional insured. Coverage is limited to bodily injury, property damage and personal and advertising injury caused, in whole or in part, by the named insured's acts or omissions (or those acting on its behalf) in the performance of ongoing operations for that additional insured.

Status ends when the named insured's operations for that additional insured are completed, and the form carries the familiar completed operations exclusion: no coverage for injury occurring after all work on the project has been completed, or after the portion of work that caused the injury has been put to its intended use. The 04 13 and later editions add the standard limiters: coverage only to the extent permitted by law, no broader than the agreement requires, and limits capped at the lesser of the contract requirement or available limits.

For a general contractor, CG 20 33 on a subcontractor's policy usually works for the GC itself, because the GC signed the subcontract. It rarely works for the owner, because the owner did not.

How CG 20 33 behaves in a tender or claim

The tender analysis starts with paperwork. The carrier will ask for the written agreement between the named insured and the tendering party, check that it requires additional insured status, and look at when it was signed. A subcontract executed after the accident, or a purchase order whose terms never mention insurance, is a common reason for denial. Oral agreements and emailed scope letters without insurance terms do not trigger the form.

Privity disputes come next. Courts, including New York's highest court in a 2018 decision on similar blanket wording, have read language requiring a written agreement with the named insured to limit status to the named insured's direct contracting party. An owner named in the prime contract, but not a signatory to the subcontract, can be denied coverage even where the subcontract plainly required the sub to protect the owner. That gap is why ISO introduced CG 20 38 with the 2013 forms.

Then the timing of the injury. A fall during framing is ongoing operations. Water intrusion discovered after the owner occupies the building is completed operations and falls outside CG 20 33 entirely unless the sub also carries CG 20 37 or, on 2019 programs, the blanket CG 20 39.

Edition history

ISO introduced CG 20 33 in 1997 as an automatic version of CG 20 10, so subcontractors would not need a scheduled endorsement for every general contractor. From the start, status ended when operations for the additional insured were completed. The 2001 cycle, which introduced CG 20 37 for completed operations, left CG 20 33 limited to ongoing work.

The 07 04 edition replaced "arising out of" with "caused, in whole or in part, by," removing coverage for the additional insured's sole negligence. The 04 13 edition added the three limiters. The 12 19 edition inserts "Written" into the title, updates the limits cap to refer to limits available rather than limits shown in the Declarations, and arrived with CG 20 39, a blanket completed operations companion for the same direct-contract parties.

What to require or prohibit in the contract

Accept CG 20 33 for the direct contracting party only. If your prime contract obligates you to protect the owner, its lender, the architect or a construction manager, either require CG 20 38 (which reaches parties the sub must add under its contract with you) or require a scheduled CG 20 10 listing each of them. Pair either with completed operations coverage.

Write the subcontract so the insurance requirement is unmistakable: a signed agreement, executed before work starts, that expressly requires additional insured status for named parties and for any party the prime contract requires. Do not rely on a master agreement that was never countersigned, or on a purchase order whose terms and conditions sit on a website.

• Require: CG 20 33 or CG 20 38 for ongoing operations, plus CG 20 37, CG 20 39 or CG 20 40 for completed operations, with the duration stated in years.
• Require: an executed subcontract or work order before mobilization. Pikorua Security treats an unsigned agreement as no agreement.
• Prohibit: carrier blanket wording limited to parties "with whom you have a direct written contract" when your prime contract requires upstream additional insureds.

How Pikorua Security verifies or flags CG 20 33

Pikorua Security recognizes CG 20 33 by its footer and grant language and records it as blanket status with a direct-contract trigger. It then compares the additional insureds your exhibit requires (pulled from the prime contract on the project record) against who the form actually reaches. When the exhibit names the owner or lender and the only form on file is CG 20 33, the file is flagged with a specific reason: "Owner not reached: blanket form requires a written agreement with the named insured."

The agreement check runs at the same time. Pikorua Security confirms an executed subcontract is attached to the vendor record in Procore or CMiC and that its signature date precedes mobilization. If the subcontract is still in draft, the vendor stays at the compliance gate, and pay applications can be held until the record is complete.