ISO endorsement

CX 21 10 Limitation Of Coverage To Designated Premises, Project Or Operation

Filings
72
latest Jun 15, 2026
Filing companies
28
22 carrier groups
States
30
Latest edition
06 26
most filed: 04 17

Coverage description

An Insurance Services Office (ISO) standard form. It limits excess liability coverage to injury or damage that occurs on the scheduled premises or arises out of the scheduled project or operation, and to personal and advertising injury from your business there.

How the form has changed

2 changes across 1 revision, newest first. Each edition is compared with the one before it, using wording from filed copies.

  1. 04 17 edition

    Apr 2017, compared with 04 13
    • Coverage now applies only to injury or damage that occurs on the scheduled premises or arises out of the scheduled project or operation, instead of injury or damage arising out of the use of the premises and operations incidental to them.

      04 13

      “The ownership, maintenance or use of the premises shown in the Schedule and operations necessary or incidental to those premises”

      04 17

      “Occurs on the premises shown in the Schedule or the grounds and structures appurtenant to those premises”

    • A separate rule now limits personal and advertising injury to offenses arising out of your business performed on the scheduled premises or in connection with the scheduled project or operation.

      04 13

      Not in this edition

      04 17

      “this insurance applies but only if the personal and advertising injury is caused by an offense arising out of your business”

Editions

Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.

EditionFilingsCompaniesStatesFiled
06 26Jun 2026Latest27226Sep 2025 to Feb 2026
04 17Apr 2017392513Dec 2021 to Jun 2026
04 13Apr 2013622Apr 2022 to Jun 2025

Where filings record what this form replaced, they name earlier edition 04 17. Only some filings record replacements.

What the filings show

  • Edition in use: in the past 12 months, 2 companies filed the 06 26 edition and 1 company filed 04 17.
  • CX 21 14 (Exclusion – Exterior Insulation And Finish Systems) is filed alongside it most often, in 62 of the same filings (86%).

Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Jun 2026, excluding withdrawn and rejected filings. One filing can cover several affiliated companies.

Carriers filing this form

The 10 carrier groups with the most filings that include CX 21 10, out of 22 in total.

CarrierFilingsStatesEditions, most filed firstLast filed
Insurance Services Office, Inc.Advisory Organization262606 26Jan 14, 2026
Mutual OF Enumclaw GroupMutual of Enumclaw Insurance Company5504 17Apr 3, 2023
Sompo GroupSompo America Insurance Company5104 17Jun 15, 2026
Tokio Marine Holdings Incorporated GroupSafety National Casualty Corporation5104 1706 26Feb 17, 2026
ACP Insurance Mgmt LLC GroupAccelerant National Insurance Company4304 17May 13, 2024
OLD Republic GroupOld Republic Insurance Company4104 13Jun 30, 2025
AU Holding Company GroupContinental Indemnity Company2204 17May 3, 2024
Andover Group2 group companies filed it, led by Merrimack Mutual Fire Insurance Company and Cambridge Mutual Fire Insurance Company2204 17Apr 25, 2024
Church Mutual GroupChurch Mutual Insurance Company, S.I.2104 13Jun 15, 2023
Farm Bureau GroupWestern Community Insurance Company2204 17Mar 6, 2025

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States

Number of filings that include CX 21 10 in each state, Oct 2021 to Jun 2026. Darker states have more filings.

Tennessee: 0 filingsTNAlabama: 0 filingsALFlorida: 0 filingsFLGeorgia: 1 filingGA1Oklahoma: 1 filingOK1South Carolina: 4 filingsSC4Arkansas: 0 filingsARMissouri: 0 filingsMOIndiana: 1 filingIN1Louisiana: 1 filingLA1Ohio: 0 filingsOHWisconsin: 1 filingWI1Texas: 0 filingsTXKentucky: 1 filingKY1Iowa: 0 filingsIAKansas: 1 filingKS1Mississippi: 0 filingsMSNorth Carolina: 0 filingsNCNebraska: 1 filingNE1South Dakota: 0 filingsSDMontana: 2 filingsMT2New Hampshire: 0 filingsNHVirginia: 1 filingVA1Arizona: 1 filingAZ1Pennsylvania: 0 filingsPARhode Island: 0 filingsRIMichigan: 1 filingMI1Alaska: 0 filingsAKDistrict of Columbia: 0 filingsDCIdaho: 3 filingsID3Maryland: 1 filingMD1West Virginia: 1 filingWV1Utah: 1 filingUT1Wyoming: 2 filingsWY2Delaware: 0 filingsDENew Mexico: 0 filingsNMColorado: 16 filingsCO16Connecticut: 2 filingsCT2Maine: 1 filingME1North Dakota: 1 filingND1Illinois: 2 filingsIL2Minnesota: 0 filingsMNNew Jersey: 0 filingsNJNew York: 0 filingsNYMassachusetts: 1 filingMA1Washington: 3 filingsWA3Oregon: 1 filingOR1Vermont: 1 filingVT1California: 17 filingsCA17Nevada: 1 filingNV1Hawaii: 1 filingHI1
FewerMore filingsNone

Often filed with

Standard-style form numbers that appear in the same filings most often.

  • CX 21 14Exclusion – Exterior Insulation And Finish Systems62 filings
  • CX 21 20Exclusion – Professional Services62 filings
  • CX 21 79Cannabis Exclusion57 filings
  • CX 21 80Cannabis Exclusion With Hemp Exception57 filings
  • CX 21 81Cannabis Exclusion With Hemp And Lessors Risk Exceptions57 filings
  • CU 00 01Commercial Liability Umbrella Coverage Form44 filings
  • CU 21 15Exclusion – Financial Services44 filings
  • CU 22 94Professional Liability Exclusion – Computer, Telecommunication, Electronic Data Or Internet Services (formerly titled Professional Liability Exclusion – Electronic Data Processing Services And Computer Consulting Or Programming Services)44 filings
  • CU 24 13Amendment of Personal and Advertising Injury Definition44 filings
  • CU 04 02Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage (formerly titled Loss Of Electronic Data Resulting From Physical Injury To Tangible Property Liability Coverage – Subject To Cyber Incident Exclusion)43 filings

Recent filings

Latest filings that include this form number. Filed copies open in FilingFocus.

SubmittedCompanyStateEditionsTracking number
Jun 15, 2026Sompo America Insurance CompanyCO04 17SMPJ-134971280
Feb 17, 2026Safety National Casualty CorporationCO06 26SFCC-134815068
Jan 14, 2026Insurance Services Office, Inc.VA06 26ISOF-134799407
Sep 30, 2025Insurance Services Office, Inc.GA06 26ISOF-134687840
Sep 16, 2025Insurance Services Office, Inc.VT06 26ISOF-134664793
Sep 15, 2025Insurance Services Office, Inc.LA06 26ISOF-134664766
Sep 15, 2025Insurance Services Office, Inc.ME06 26ISOF-134664767
Sep 15, 2025Insurance Services Office, Inc.MD06 26ISOF-134664768
Sep 15, 2025Insurance Services Office, Inc.OK06 26ISOF-134664783
Sep 13, 2025Insurance Services Office, Inc.CO06 26ISOF-134664755
Sep 13, 2025Insurance Services Office, Inc.ID06 26ISOF-134664760
Sep 13, 2025Insurance Services Office, Inc.MT06 26ISOF-134664774

Most filed ISO CX forms

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