Does my own general liability policy respond on a wrapped data-center site?
By the Rayon research desk · Last reviewed
Often not. Once you are enrolled in an owner- or contractor-controlled insurance program, endorsement CG 21 54 on your own policy excludes your work at that project. The 01 96 edition applies whether or not the wrap-up has adequate limits or stays in effect, so the gaps are off-site work and anything that happens after the wrap’s cover ends.
What does CG 21 54 exclude?
A wrap-up is one insurance program bought by the owner (an OCIP) or the general contractor (a CCIP) to cover everyone enrolled on a project. Insurers do not want to cover the same work twice, so they add CG 21 54 to each enrolled contractor’s own general liability policy.
The endorsement removes bodily injury and property damage arising out of your ongoing operations, and your completed work, at the location named in its schedule. The 01 96 edition says the exclusion applies whether or not the wrap-up provides coverage identical to your policy, has limits adequate to cover all claims, or remains in effect.
Where does that leave a subcontractor exposed?
| Situation | The wrap-up | Your own policy |
|---|---|---|
| Work on the project site during construction | Usually responds | Excluded by CG 21 54 |
| Fabrication or storage off site | Usually limited to the designated site | Check whether the exclusion’s schedule reaches it |
| A defect claim after the wrap’s completed-work period ends | No longer in force | Still excluded under the 01 96 edition |
| A loss larger than the wrap’s limits | Exhausted | Still excluded under the 01 96 edition |
| Returning to site for warranty or service work | Depends on the wrap manual | Ask before you go back |
How do I check my own policy?
- Open the forms schedule in your general liability policy and look for CG 21 54. Note the edition date printed after the form number.
- Read the schedule on the endorsement itself. It names the project or location the exclusion applies to. A blanket description reaches every wrapped project you work on.
- Ask the wrap administrator for the insurance manual and find the length of the completed-operations extension.
- Compare that end date with how long you can be sued for defective work in the project’s state.
What can be changed?
Two things are worth asking your broker for before you enrol. First, whether the exclusion can be limited to projects where you are actually enrolled and only while the wrap-up is in force. Second, whether your excess policy follows the same exclusion. The AGC’s 2026 paper on data-center construction notes that wrap-up excess limits are often thin at data-center scale, which makes the second question matter more.
Sources
- ISO CG 21 54 01 96, Exclusion: Designated Operations Covered by a Consolidated (Wrap-Up) Insurance Program
- AGC, Insurance Issues in Constructing Data Centers: A GC’s Perspective (2026)
- ISO CG 00 01 04 13, Commercial General Liability Coverage Form
General information, not legal advice or an interpretation of your policy. Policy forms and endorsements control. Form numbers are © Insurance Services Office, Inc. and are cited for reference.