ISO CG 21 39 Contractual Liability Limitation: Why It Voids Hold-Harmless Indemnity & How to Strike It
In a standard ISO CG 00 01 Commercial General Liability policy, Exclusion b. ("Contractual Liability") excludes liability assumed in a contract, EXCEPT for liability assumed in an "Insured Contract." Under Section V, Definition 9 ("Insured Contract"), paragraphs L. through E. cover leases, sidetrack agreements, and elevator maintenance, while Paragraph f. is the crucial catch-all covering every construction subcontract, vendor MSA, and hold-harmless indemnity agreement. ISO Endorsement CG 21 39 ("Contractual Liability Limitation") deletes Paragraph f. completely—meaning the moment you sign a subcontract or client MSA agreeing to indemnify your client for third-party bodily injury or property damage, you have zero insurance backing that promise.
General Contractor Left With $320,000 Uninsured Water Defect Claim Due to Missing CG 20 37 & CG 22 94 Exclusion
A GC collected a subcontractor COI showing "Additional Insured: Yes," but the actual binder only attached ISO CG 20 10 (Ongoing Operations)—omitting ISO CG 20 37 (Completed Operations)—and the GC’s own GL policy contained ISO CG 22 94 deleting the Subcontractor Exception.
EndorseIQ™ mandates both ISO CG 20 10/20 38 and CG 20 37 (Completed Operations), strikes ISO CG 22 94 and CG 21 39, and enforces Primary & Noncontributory (CG 20 01) vertical exhaustion.
Check Your Full Contract PDF for Cross-Section Overrides (Free 60s Scan)
Fixing one clause alone often fails when a buried definition, exhibit, or survival clause elsewhere in your Construction GL & Subcontractor neutralizes your protection. Drop your PDF or Word (.docx) below for an instant, 100% anonymous cross-section audit.
“DELETION OF ISO CG 21 39 & PRESERVATION OF FULL DEFINITION f. "INSURED CONTRACT" COVERAGE: Endorsement CG 21 39 is deleted in its entirety. Section V, Definition 9 ("Insured contract") shall retain Paragraph f. per unmodified ISO Form CG 00 01 (or at minimum ISO CG 24
What to Say to the GL Carrier & Upstream GC / Owner Requirements
"Attaching ISO CG 21 39 deletes Paragraph f. of the Insured Contract definition and leaves every hold-harmless clause in our client MSAs and subcontracts completely uninsured. We require full deletion of CG 21 39 so standard ISO CG 00 01 Insured Contract coverage remains intact."
Why they drafted it this way: Surplus-lines carriers attach ISO CG 21 39 to avoid paying third-party contractual indemnity tenders, knowing that 90% of policyholders never look up what "Paragraph f." of Definition 9 actually means.
Mandatory Audit Checklist Points
- Inspect the endorsement schedule for ISO CG 21 39 ("Contractual Liability Limitation") and strike it
- Confirm Section V, Definition 9 ("Insured Contract") retains Paragraph f. in full
- Ensure defense costs for an Indemnitee under Supplementary Payments sit Outside the Policy Limits
- If the carrier demands a sole-negligence cap, substitute ISO CG 24 26 rather than accepting CG 21 39
Paste Your ISO CG 21 39 contractual liability limitation insured contract exclusion Section or Upload Your Full Construction GL & Subcontractor (.pdf / .docx)
Check if your draft has a hidden loophole or cross-section override. Click ⚡ Preview Sample Audit (Instant) to see a live demo in 0.2s, or upload your own PDF / Word (.docx) contract below:
EndorseIQ™ Policy & Binder Scanner
ACTIVE ENGINE: ENDORSEIQ™ (MULTI-HOP ISO & COVERAGE GRAPH)Frequently Asked Questions
What is the difference between ISO CG 21 39 and ISO CG 24 26?
ISO CG 21 39 deletes Paragraph f. of "Insured Contract" entirely, wiping out contractual liability coverage for all subcontracts and MSAs. ISO CG 24 26 ("Amendment of Insured Contract Definition") keeps Paragraph f. intact, but limits it so the policy does not cover the indemnitee’s SOLE negligence—making CG 24 26 far safer than CG 21 39.
Does an ACORD 25 COI reveal if ISO CG 21 39 is attached to the policy?
No. Unless the endorsement schedule or policy binder is audited, a subcontractor can hand you a clean-looking ACORD 25 Certificate of Insurance while carrying ISO CG 21 39—leaving their contractual indemnity promise worthless.
How do I redline ISO CG 21 39 contractual liability limitation insured contract exclusion traps in my Construction GL & Subcontractor anonymously without creating an account?
Upload your Construction GL & Subcontractor PDF or Word (.docx) draft to ExclusionRadar.com to run the "ISO CG 21 39 Contractual Liability Limitation: Why It Voids Hold-Harmless Indemnity & How to Strike It" defense cartridge 100% anonymously—with zero account registration, zero email login, and stateless in-memory processing. EndorseIQ™ flags ISO CG 21 39 contractual liability limitation insured contract exclusion exposure (typically $100,000 – $850,000+ in uninsured contractual indemnity obligations; documented unredlined loss: $320,000 denied Completed Operations & subcontractor defect claim), checks for cross-section overrides, and exports a ready-to-send Microsoft Word (.docx) Track-Changes file.
More Construction GL & Subcontractor Redline Playbooks
View All Construction GL & Subcontractor PlaybooksISO CG 20 01 Primary & Noncontributory + CG 24 04 Waiver of Subrogation: Preventing Horizontal Exhaustion
When a serious $2,500,000 claim occurs on a project where a subcontractor or vendor carries $1,000,000 Primary GL and $5,000,000 Excess/Umbrella, upstream GCs and Owners expect the subcontractor’s $1M Primary and $5M Umbrella to pay the full $2.5M ("Vertical Exhaustion"). However, if ISO CG 20 01 ("Primary and Noncontributory — Other Insurance Condition") is missing, or if the subcontractor’s Umbrella policy contains a standard "Excess Over All Other Valid and Collectible Insurance" clause, courts enforce "Horizontal Exhaustion"—forcing the upstream GC’s and Owner’s own primary GL policies to pay before the subcontractor’s Umbrella contributes a dollar.
ISO CG 25 03 Designated Construction Project Aggregate Audit: Preventing Off-Site Limit Erosion
Without ISO Endorsement CG 25 03 ("Designated Construction Project(s) General Aggregate Limit"), a contractor’s $2,000,000 General Aggregate Limit is shared across EVERY jobsite the contractor worked on during the entire year. If a subcontractor you hired suffers a $1.8M claim on an unrelated job across town in March, only $200,000 of aggregate coverage remains for your project in July! Furthermore, even when carriers attach CG 25 03, they often layer a manuscript "$5,000,000 Policy-Wide Aggregate Cap" on top.
Multi-Family, Condominium & Tract Housing Exclusion Audit: Catching Mixed-Use GL Coverage Traps
Nearly every non-admitted construction GL policy contains a manuscript "Residential / Habitational / Condominium / Tract Housing Exclusion." While contractors working on ground-floor retail storefronts, commercial offices, or apartment renovations assume this exclusion only applies to single-family homebuilders, carriers draft these endorsements to exclude ANY work on a structure that contains—or is ever converted into—residential apartments, condominiums, townhomes, student housing, or mixed-use retail/residential buildings!
Earth Movement, Subsidence, EIFS (CG 22 91) & Mold/Fungi (CG 21 67) GL Exclusion Audit
Surplus-lines construction GL binders frequently bundle three silent defect exclusions that destroy coverage for site-work, plumbing, and exterior envelope contractors: (1) an "Earth Movement / Subsidence / Soil Settlement Exclusion" that bars any foundation crack, trench collapse, or retaining-wall claim even when caused by human excavation or a burst pipe; (2) ISO CG 22 91 ("Exclusion — Exterior Insulation and Finish Systems / EIFS"), which excludes any property damage to a building if synthetic stucco/EIFS exists anywhere on the exterior; and (3) ISO CG 21 67 ("Fungi or Bacteria Exclusion"), which denies water-leak claims the moment a plaintiff’s complaint mentions mold.