ISO endorsement · commercial general liability

CG 20 27 Additional Insured - Co- Owner Of Insured Premises

Filings
229
latest Oct 26, 2026
Filing companies
116
57 carrier groups
States
43
Latest edition
12 19
Dec 2019

Coverage description

An Insurance Services Office (ISO) standard form. It adds the persons or organizations in the schedule as additional insureds under general liability, but only for their liability as co-owner of the premises shown in the schedule.

How the form has changed

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

  1. 12 19 edition

    Dec 2019, compared with 04 13Latest edition
    • The cap on what is paid for the additional insured now refers to the applicable limits of insurance rather than only the limits shown in the Declarations.

      04 13

      “Available under the applicable Limits of Insurance shown in the Declarations”

      12 19

      “Available under the applicable limits of insurance;”

  2. 04 13 edition

    Apr 2013, compared with 11 85
    • Coverage for the additional insured now applies only to the extent permitted by law and is no broader than the contract or agreement requires.

      11 85

      Not in this edition

      04 13

      “insured only applies to the extent permitted by law”

    • When a contract requires the coverage, the most paid for the additional insured is the lesser of the amount the contract requires or the available limits.

      11 85

      Not in this edition

      04 13

      “the most we will pay on behalf of the additional insured is the amount of insurance”

Editions

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

EditionFilingsCompaniesStatesFiled
12 19Dec 2019Latest1909841Nov 2021 to Oct 2026
04 13Apr 2013372419Dec 2021 to Oct 2026
11 85Nov 1985696Feb 2022 to Mar 2024

2 other edition dates appear in one or two filings each, often carrier-specific versions: 05 20, 10/1/2020.

Where filings record what this form replaced, they name earlier edition 04 13 and other forms G 20 27. Only some filings record replacements.

What the filings show

  • Edition in use: in the past 12 months, 40 companies filed the 12 19 edition and 7 companies filed 04 13.
  • CG 20 11 (Additional Insured – Managers or Lessors of Premises) is filed alongside it most often, in 225 of the same filings (98%).

Filed under

Commercial General Liability 146Other Liability 37Commercial Package 24Other other liability 8Other Commercial Lines 7

Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 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 CG 20 27, out of 57 in total.

CarrierFilingsStatesEditions, most filed firstLast filed
Liberty Mutual Group11 group companies filed it, led by First National Insurance Company of America and General Insurance Company of America343112 19Oct 26, 2026
Cincinnati Financial Group3 group companies filed it, led by The Cincinnati Casualty Company and The Cincinnati Indemnity Company161612 19Oct 23, 2023
WCF Mutual Insurance Company GroupAssociated Indemnity Corporation161612 19Jan 15, 2026
Berkshire Hathaway Group4 group companies filed it, led by Berkshire Hathaway Homestate Insurance Company and Oak River Insurance Company151504 13Aug 19, 2024
Nationwide Corporation Group8 group companies filed it, led by Nationwide Agribusiness Insurance Company and Nationwide Insurance Company of America14404 1312 19Oct 21, 2026
Markel Corporation Group2 group companies filed it, led by State National Insurance Company, Inc. and Markel Insurance Company9412 1904 1311 85Oct 22, 2026
Starr Group2 group companies filed it, led by Starr Indemnity and Liability Company and Starr Specialty Insurance Company9312 1904 1310/1/2020Apr 13, 2026
Tokio Marine Holdings Incorporated Group4 group companies filed it, led by Safety National Casualty Corporation and TNUS Insurance Company8212 19Feb 17, 2026
Sompo GroupSompo America Insurance Company7212 19Jun 18, 2026
Trisura GroupTrisura Insurance Company7412 19Jul 10, 2026

How the largest insurers handle CG 20 27

Groups among the largest commercial general liability insurers that filed CG 20 27 or their own version in the past five years.

See more forms

Search related forms, compare editions, and research carrier filings with FilingFocus.

States

Number of filings that include CG 20 27 in each state, Oct 2021 to Oct 2026. Darker states have more filings.

Tennessee: 2 filingsTN2Alabama: 1 filingAL1Florida: 0 filingsFLGeorgia: 3 filingsGA3Oklahoma: 2 filingsOK2South Carolina: 5 filingsSC5Arkansas: 3 filingsAR3Missouri: 3 filingsMO3Indiana: 6 filingsIN6Louisiana: 2 filingsLA2Ohio: 5 filingsOH5Wisconsin: 6 filingsWI6Texas: 1 filingTX1Kentucky: 2 filingsKY2Iowa: 2 filingsIA2Kansas: 3 filingsKS3Mississippi: 2 filingsMS2North Carolina: 2 filingsNC2Nebraska: 1 filingNE1South Dakota: 1 filingSD1Montana: 3 filingsMT3New Hampshire: 1 filingNH1Virginia: 3 filingsVA3Arizona: 0 filingsAZPennsylvania: 3 filingsPA3Rhode Island: 2 filingsRI2Michigan: 0 filingsMIAlaska: 0 filingsAKDistrict of Columbia: 0 filingsDCIdaho: 3 filingsID3Maryland: 2 filingsMD2West Virginia: 2 filingsWV2Utah: 3 filingsUT3Wyoming: 6 filingsWY6Delaware: 0 filingsDENew Mexico: 6 filingsNM6Colorado: 34 filingsCO34Connecticut: 2 filingsCT2Maine: 1 filingME1North Dakota: 1 filingND1Illinois: 17 filingsIL17Minnesota: 0 filingsMNNew Jersey: 3 filingsNJ3New York: 2 filingsNY2Massachusetts: 1 filingMA1Washington: 15 filingsWA15Oregon: 5 filingsOR5Vermont: 2 filingsVT2California: 58 filingsCA58Nevada: 2 filingsNV2Hawaii: 0 filingsHI
FewerMore filingsNone

Often filed with

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

  • CG 20 11Additional Insured – Managers or Lessors of Premises225 filings
  • CG 20 26Additional Insured – Designated Person or Organization224 filings
  • CG 20 10Additional Insured - Owners, Lessees or Contractors - Scheduled Person or Organization210 filings
  • CG 20 28Additional Insured – Lessor of Leased Equipment210 filings
  • CG 20 05Additional Insured – Controlling Interest207 filings
  • CG 20 18Additional Insured – Mortgagee, Assignee or Receiver207 filings
  • CG 20 24Additional Insured – Owners or Other Interests From Whom Land Has Been Leased204 filings
  • CG 20 13Additional Insured – State or Governmental Agency or Subdivision or Political Subdivision – Permits or Authorizations Relating to Premises202 filings
  • CG 20 12Additional Insured – State or Governmental Agency or Subdivision or Political Subdivision – Permits or Authorizations200 filings
  • CG 20 23Additional Insured – Executors, Administrators, Trustees or Beneficiaries199 filings

Recent filings

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

SubmittedCompanyStateEditionsTracking number
Oct 26, 2026American Economy Insurance Companyand 5 moreRI12 19LBRC-135130111
Oct 22, 2026State National Insurance Company, Inc.CO12 19STNA-135128706
Oct 21, 2026Allied Insurance Company of Americaand 4 moreCA12 19NWPP-G135131050
Oct 6, 2026American Casualty Company of Reading, Pennsylvaniaand 5 moreCA12 1904 13CNAB-135091690
Aug 17, 2026Mississippi Farm Bureau Casualty Insurance CompanyMS12 19SFBC-135017175
Aug 10, 2026First National Insurance Company of AmericaNE12 19LBRC-135047012
Jul 10, 2026Southern Farm Bureau Casualty Insurance CompanyLA12 19SFBC-135013358
Jul 10, 2026Trisura Insurance CompanyWA12 19SHNF-134976660
Jul 9, 2026First National Insurance Company of AmericaMS12 19LBRC-135012891
Jun 30, 2026Trisura Insurance CompanyIL12 19SHNF-134983369
Jun 26, 2026Church Mutual Insurance Company, S.I.CO12 19CHMU-134947220
Jun 26, 2026American Economy Insurance Companyand 6 moreLA12 19LBRC-134964566

Most filed ISO CG forms

All Commercial General Liability (ISO CG) forms

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