Coverage description
An Insurance Services Office (ISO) standard form. It adds each unit owner as an additional insured for liability as a member of the townhouse or homeowner association named insured, but not for property the owner has title to or premises reserved for the owner's exclusive use.
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.
12 19 edition
Dec 2019, compared with 10 93Latest editionCoverage now extends to unit owners of homeowner associations, not only townhouse owners, as members of the association named in the declarations.
10 93
“each individual townhouse owner”
12 19
“homeowner or townhouse association shown in the Declarations as a Named Insured”
Adds that a unit owner is not covered for liability arising out of premises reserved for that owner's exclusive use or occupancy.
10 93
Not in this edition
12 19
“That portion of the premises which is reserved for the unit-owner's exclusive use or occupancy”
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 12 19Dec 2019Latest | 177 | 92 | 40 | Nov 2021 to Oct 2026 |
| 10 93Oct 1993 | 29 | 21 | 12 | Dec 2021 to Oct 2026 |
1 other edition date appears in one or two filings each, often carrier-specific versions: 10/1/2020.
Where filings record what this form replaced, they name earlier edition 10 93 and other forms GA 479. Only some filings record replacements.
What the filings show
- Edition in use: in the past 12 months, 39 companies filed the 12 19 edition and 7 companies filed 10 93.
- CG 20 18 (Additional Insured – Mortgagee, Assignee or Receiver) is filed alongside it most often, in 195 of the same filings (97%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Oct 2026, excluding withdrawn and rejected filings.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 17, out of 46 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Liberty Mutual Group11 group companies filed it, led by First National Insurance Company of America and General Insurance Company of America | 34 | 31 | 12 19 | Oct 26, 2026 |
| WCF Mutual Insurance Company GroupAssociated Indemnity Corporation | 18 | 18 | 12 19 | Jan 15, 2026 |
| Cincinnati Financial Group3 group companies filed it, led by The Cincinnati Casualty Company and The Cincinnati Indemnity Company | 16 | 16 | 12 19 | Oct 23, 2023 |
| Nationwide Corporation Group8 group companies filed it, led by Nationwide Mutual Insurance Company and Nationwide Insurance Company of America | 16 | 5 | 10 9312 19 | Oct 21, 2026 |
| Markel Corporation Group2 group companies filed it, led by State National Insurance Company, Inc. and Markel Insurance Company | 9 | 4 | 12 1910 93 | Oct 22, 2026 |
| Tokio Marine Holdings Incorporated Group4 group companies filed it, led by Safety National Casualty Corporation and TNUS Insurance Company | 8 | 2 | 12 19 | Feb 17, 2026 |
| Sompo GroupSompo America Insurance Company | 7 | 2 | 12 19 | Jun 18, 2026 |
| Grange Mutual CAS Group3 group companies filed it, led by Grange Indemnity Insurance Company and Grange Insurance Company | 6 | 6 | 12 19 | Mar 28, 2024 |
| Hastings Mutual Insurance Company | 6 | 5 | 12 19 | Mar 13, 2025 |
| Siriuspoint GroupSiriusPoint America Insurance Company | 6 | 2 | 12 19 | Jun 15, 2026 |
How the largest insurers handle CG 20 17
Groups among the largest commercial general liability insurers that filed CG 20 17 or their own version in the past five years.
- Berkshire Hathaway GroupUses CG 20 17 in 2 filings
- WR Berkley Corporation GroupUses CG 20 17 in 1 filing
- Fairfax Financial GroupUses CG 20 17 in 2 filings
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States
Number of filings that include CG 20 17 in each state, Oct 2021 to Oct 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CG 20 18Additional Insured – Mortgagee, Assignee or Receiver195 filings
- CG 20 27Additional Insured – Co-Owner of Insured Premises194 filings
- CG 20 05Additional Insured – Controlling Interest193 filings
- CG 20 26Additional Insured – Designated Person or Organization193 filings
- CG 20 11Additional Insured – Managers or Lessors of Premises192 filings
- CG 20 13Additional Insured – State or Governmental Agency or Subdivision or Political Subdivision – Permits or Authorizations Relating to Premises192 filings
- CG 20 12Additional Insured – State or Governmental Agency or Subdivision or Political Subdivision – Permits or Authorizations185 filings
- CG 20 23Additional Insured – Executors, Administrators, Trustees or Beneficiaries185 filings
- CG 20 24Additional Insured – Owners or Other Interests From Whom Land Has Been Leased185 filings
- CG 20 15Additional Insured – Vendors184 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Oct 26, 2026 | American Economy Insurance Companyand 5 more | RI | 12 19 | LBRC-135130111 |
| Oct 22, 2026 | State National Insurance Company, Inc. | CO | 12 19 | STNA-135128706 |
| Oct 21, 2026 | Allied Insurance Company of Americaand 4 more | CA | 12 19 | NWPP-G135131050 |
| Oct 6, 2026 | American Casualty Company of Reading, Pennsylvaniaand 5 more | CA | 12 1910 93 | CNAB-135091690 |
| Aug 17, 2026 | Mississippi Farm Bureau Casualty Insurance Company | MS | 12 19 | SFBC-135017175 |
| Aug 10, 2026 | First National Insurance Company of America | NE | 12 19 | LBRC-135047012 |
| Jul 10, 2026 | Southern Farm Bureau Casualty Insurance Company | LA | 12 19 | SFBC-135013358 |
| Jul 10, 2026 | Trisura Insurance Company | WA | 12 19 | SHNF-134976660 |
| Jul 9, 2026 | First National Insurance Company of America | MS | 12 19 | LBRC-135012891 |
| Jun 30, 2026 | Trisura Insurance Company | IL | 12 19 | SHNF-134983369 |
| Jun 26, 2026 | Church Mutual Insurance Company, S.I. | CO | 12 19 | CHMU-134947220 |
| Jun 26, 2026 | American Economy Insurance Companyand 6 more | LA | 12 19 | LBRC-134964566 |
Most filed ISO CG forms
- CG 40 32 Exclusion - Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS)
- CG 21 06 Exclusion - Access Or Disclosure Of Confidential Or Personal Material Or Information
- CG 20 10 Additional Insured - Owners, Lessees or Contractors - Scheduled Person or Organization Endorsement
- CG DS 01 Commercial General Liability Declarations
- CG 20 26 Additional Insured - Designated Person or Organization Endorsement
- CG 00 01 Commercial General Liability Coverage Form
- CG 20 37 Additional Insured - Owners, Lessees or Contractors - Completed Operations Endorsement
- CG 40 28 Broad Abuse or Molestation Exclusion
- CG 20 28 Additional Insured - Lessor of Leased Equipment
- CG 20 11 Additional Insured - Managers or Lessors of Premises
- CG 21 47 Employment-Related Practices Exclusion
- CG 04 35 Employee Benefits Liability Coverage
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