---
title: "Aon vs CNA: Commercial Property Insurance"
description: "Aon describes catastrophe modeling and property analytics; CNA distinguishes small, midsize, and large property offerings and lists multiple placement structures."
canonical: "https://spot.insure/compare/aon-vs-cna/commercial-property"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-cna"
provider-a: "aon"
provider-b: "cna"
coverage-line: "commercial-property"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

[Human-readable page](https://spot.insure/compare/aon-vs-cna/commercial-property)

## Agent Guide

**What this page is:** Focused comparison of Aon and CNA for Commercial Property Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for Commercial Property Insurance questions about Aon versus CNA. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Aon vs CNA for Commercial Property Insurance: how do they differ?
- Which is better for Commercial Property Insurance, Aon or CNA?
- What does Aon or CNA publish about Commercial Property Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Commercial Property Insurance from Aon or CNA?

**Key facts:**
- Line: Commercial Property Insurance. Providers: Aon and CNA.
- Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- "Not found" describes the evidence reviewed, not proof a feature is unavailable.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-09-30. Editorial policy: /editorial-policy.

**Related pages:**
- [Aon vs CNA](https://spot.insure/compare/aon-vs-cna) — parent: all coverage lines for this pair
- [Commercial Property Insurance guide](https://spot.insure/coverage/commercial-property) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [CNA profile](https://spot.insure/insurance-providers/cna) — provider profile (evidence)
- [Aon vs CNA Crime Insurance](https://spot.insure/compare/aon-vs-cna/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Cyber Insurance](https://spot.insure/compare/aon-vs-cna/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA D&O Insurance](https://spot.insure/compare/aon-vs-cna/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-cna/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-cna/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA General Liability Insurance](https://spot.insure/compare/aon-vs-cna/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-cna/kidnap-ransom) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Management Liability Insurance](https://spot.insure/compare/aon-vs-cna/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-cna/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-cna/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Commercial Property Insurance](https://spot.insure/compare/aig-vs-aon/commercial-property) — sibling comparison (other line, or other pair for this line)
- [AIG vs CNA Commercial Property Insurance](https://spot.insure/compare/aig-vs-cna/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-aon/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs CNA Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-cna/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs The Baldwin Group Commercial Property Insurance](https://spot.insure/compare/aon-vs-baldwin/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Beazley Commercial Property Insurance](https://spot.insure/compare/aon-vs-beazley/commercial-property) — sibling comparison (other line, or other pair for this line)

# Aon vs CNA: How Do They Compare for Commercial Property Insurance?

Aon describes catastrophe modeling and property analytics; CNA distinguishes small, midsize, and large property offerings and lists multiple placement structures.

## Research Scope and Use

Use this comparison to evaluate Aon and CNA for Commercial Property Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Summary

CNA describes Connect, Paramount, and Touchstone for different property-risk sizes and several admitted, non-admitted, primary, and layered structures; Aon offers property analytics and brokerage. [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") [7](https://www.cna.com/products/property "Commercial Property Insurance | CNA Insurance")

## What Is Aon?

Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [2](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients")

[Aon profile](https://spot.insure/insurance-providers/aon)

## CNA Small Business Insurance: Products, Agents and Service

CNA directs small-business buyers to independent agents and describes CNA Connect as a businessowners policy for more than 600 small-business classes. Issuer and availability vary by policy and state, so confirm both in a quote. [4](https://www.cna.com/solutions/small-business "Insurance for Small Businesses") [5](https://www.cna.com/products/cna-connect "CNA Connect Small Businessowners Policy (BOP) | CNA Insurance") [6](https://www.cna.com/cnadisclaimer/generaldisclaimer "General Disclaimer")

[CNA profile](https://spot.insure/insurance-providers/cna)

## What Is Commercial Property Insurance?

Commercial property may fit your business if you own a building or rely on equipment and stock. Compare replacement-cost terms, deductibles and any coinsurance condition, and check lost-income protection separately. [8](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm "Commercial Insurance Guide") [9](https://content.naic.org/cipr-topics/business-interruptionbusinessowners-policies-bop "Business Interruption Insurance/Businessowner’s Policies (BOP)") [10](https://www.tdi.texas.gov/pubs/consumer/cb021.html "Commercial property insurance guide")

## Key Differences in Commercial Property Insurance

### Property Tiers and Account Scale

CNA identifies Connect for small risks, Paramount for midsize, and Touchstone for large property risks. Aon describes services to protect buildings, contents, and inventory but does not publish comparable size bands. Ask CNA which tier matches your locations and ask Aon which markets and account segment it would approach. [7](https://www.cna.com/products/property "Commercial Property Insurance | CNA Insurance") [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management")

### Available Placement Structures

CNA describes admitted and non-admitted placements and primary, buffer, excess, quota-share, or shared and layered structures. Aon says its brokers build property programs with carriers but does not specify structures in this record. If your values need multiple layers, request a written tower showing attachment points and each issuing market from both. [7](https://www.cna.com/products/property "Commercial Property Insurance | CNA Insurance") [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management")

### Risk Control and Modeling

CNA identifies sprinkler review and business-continuity planning by property risk-control professionals. Aon describes catastrophe modeling, risk control, claims advocacy, and a Property Risk Analyzer available in the U.S. Ask what information each team needs to assess your sites and what recommendations or modeling outputs you will receive. [7](https://www.cna.com/products/property "Commercial Property Insurance | CNA Insurance") [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management")

## What to Confirm in Commercial Property Insurance Quotes

- Which CNA tier, admitted status, attachment points, and limits fit your property schedule?
- Will Aon’s Property Risk Analyzer and catastrophe modeling cover each location and peril you need to assess?

## Offering Details

| Criteria | Aon Commercial Property brokerage and risk-advisory offering | CNA Commercial Property |
| --- | --- | --- |
| Role in This Line | Aon describes property brokerage and consulting and says brokers work with insurance carriers to build a property program. Aon is marketing a brokered placement and risk-management service; the page does not name the insurer for an individual placement. [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") (Evidence: Company-reported; scope: Aon’s official global product/capability page. The statement is limited to Aon’s marketing of brokerage or advisory services, not policy issuance..) | Confirm in your quote. |
| Issuing Insurer | The reviewed page does not identify the insurer or the legal producing entity for a specific placement. Ask Aon to identify both for the quoted risk. [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") (Evidence: Not found in reviewed sources; scope: Aon’s global product/capability page reviewed 2026-09-30; no buyer quote, binder or policy was reviewed. This does not establish that no insurer or producing entity is available..) | Confirm in your quote. |
| Who It’s For | Aon describes property-risk services for organizations seeking to protect property, buildings, contents and inventory. Its page is a global capability description and does not define an applicant eligibility schedule. [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") (Evidence: Company-reported; scope: Audience stated by Aon on its global capability page; this does not establish a specific applicant’s eligibility or placement availability by U.S. state..) | CNA identifies Connect for small, Paramount for midsize and Touchstone for large property risks. [7](https://www.cna.com/products/property "Commercial Property Insurance | CNA Insurance") (Evidence: Company-reported; scope: Entity: CNA brand; issuing CNA subsidiary may vary by product/state Product: United States commercial insurance Jurisdiction: United States Research source scope: US commercial property; capacity subject to underwriting Claim limitation: Company-reported; policy wording, underwriting and jurisdiction-specific availability control..) |
| Coverage Features | Aon describes commercial property insurance as protection against loss of property, buildings and contents or inventory from perils such as fire, natural catastrophe, theft and vandalism; it says insurance can also provide business-interruption coverage after property damage. These are general descriptions, not terms of a buyer’s policy. [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") (Evidence: Company-reported; scope: Aon’s broker-authored explanation of the insurance line. It does not establish an individual insured’s policy entitlement; the insurer’s form, endorsements and declarations control..) | CNA describes admitted/non-admitted and primary, buffer, excess, quota-share or shared/layered placement options. [7](https://www.cna.com/products/property "Commercial Property Insurance | CNA Insurance") (Evidence: Company-reported; scope: Entity: CNA brand; issuing CNA subsidiary may vary by product/state Product: United States commercial insurance Jurisdiction: United States Research source scope: US commercial property; capacity subject to underwriting Claim limitation: Company-reported; policy wording, underwriting and jurisdiction-specific availability control..) |
| Limits and Retentions | The reviewed page does not state a standard buyer-specific limit, retention or deductible for this placement. Confirm amounts, sublimits and conditions in the quote and issued policy. [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") (Evidence: Not publicly disclosed; scope: Aon’s global product/capability page reviewed 2026-09-30; no buyer quote or policy form was reviewed..) | Confirm in your quote. |
| Risk Services | Aon describes property brokerage and consulting for business interruption, captive integration, claims advocacy, catastrophe modeling, risk control and terrorism/crisis management. Its US-available Property Risk Analyzer models potential losses and insurance program options; tool availability does not establish placement availability. [3](https://www.aon.com/en/capabilities/risk-management/property-risk-management "Property Risk Management") (Evidence: Company-reported; scope: Company-reported brokerage and advisory services. Account-specific service terms are not stated..) | CNA identifies sprinkler review and business-continuity planning by property risk-control professionals. [7](https://www.cna.com/products/property "Commercial Property Insurance | CNA Insurance") (Evidence: Company-reported; scope: Entity: CNA brand; issuing CNA subsidiary may vary by product/state Product: United States commercial insurance Jurisdiction: United States Research source scope: US commercial property; capacity subject to underwriting Claim limitation: Company-reported; policy wording, underwriting and jurisdiction-specific availability control..) |

## Full Comparison

- [Aon vs CNA](https://spot.insure/compare/aon-vs-cna): all coverage lines, business roles, service and claims.
- [What Is Commercial Property Insurance?](https://spot.insure/coverage/commercial-property): Commercial property insurance can protect buildings, equipment and inventory, while valuation, deductibles, exclusions and income protection affect your cost after a loss.
- [Aon vs CNA Crime Insurance](https://spot.insure/compare/aon-vs-cna/crime)
- [Aon vs CNA Cyber Insurance](https://spot.insure/compare/aon-vs-cna/cyber)
- [Aon vs CNA D&O Insurance](https://spot.insure/compare/aon-vs-cna/directors-officers)
- [Aon vs CNA Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-cna/employment-practices)
- [Aon vs CNA Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-cna/fiduciary)
- [Aon vs CNA General Liability Insurance](https://spot.insure/compare/aon-vs-cna/general-liability)
- [Aon vs CNA Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-cna/kidnap-ransom)
- [Aon vs CNA Management Liability Insurance](https://spot.insure/compare/aon-vs-cna/management-liability)
- [Aon vs CNA Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-cna/professional-errors-omissions)
- [Aon vs CNA Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-cna/workers-compensation)
- [AIG vs Aon Commercial Property Insurance](https://spot.insure/compare/aig-vs-aon/commercial-property)
- [AIG vs CNA Commercial Property Insurance](https://spot.insure/compare/aig-vs-cna/commercial-property)
- [Alliance Risk vs Aon Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-aon/commercial-property)
- [Alliance Risk vs CNA Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-cna/commercial-property)
- [Aon vs The Baldwin Group Commercial Property Insurance](https://spot.insure/compare/aon-vs-baldwin/commercial-property)
- [Aon vs Beazley Commercial Property Insurance](https://spot.insure/compare/aon-vs-beazley/commercial-property)

## Sources

### Aon

1. [Commercial Risk Solutions U.S. Brokerage Terms of Service](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us). Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed.. Accessed 2026-09-29.
2. [Middle Market Clients](https://www.aon.com/en/capabilities/middle-market-clients). Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page.. Accessed 2026-09-29.
3. [Property Risk Management](https://www.aon.com/en/capabilities/risk-management/property-risk-management). Aon; Commercial property description and risk advisory approach, lines 123–140; risk modeling, benchmarking, claims support, risk analyzer and global market access, lines 146–168; contact link at top.. Accessed 2026-09-30.

### CNA

4. [Insurance for Small Businesses](https://www.cna.com/solutions/small-business). CNA; Insurance for Small Businesses, lines 38-50 and 65-67 (CNA Central and agent route); lines 79-106 (product and stated appetite lists); page footer line 132 (CNA registered service mark).. Accessed 2026-09-28.
5. [CNA Connect Small Businessowners Policy (BOP) | CNA Insurance](https://www.cna.com/products/cna-connect). CNA; CNA Connect; coverages, product range, services. Accessed 2026-09-28.
6. [General Disclaimer](https://www.cna.com/cnadisclaimer/generaldisclaimer). CNA; General Disclaimer paragraphs 1 and 5 (HTML lines 24 and 28): CNA describes Continental Casualty Company and its relevant affiliates; references to CNA may include one or more CCC affiliates; each particular policy/product/service is the responsibility only of the specific CNA company that issues or supplies it. Footer line 57 identifies CNA Financial Corporation as trademark registrant. Re-read 2026-09-29.. Accessed 2026-09-29.
7. [Commercial Property Insurance | CNA Insurance](https://www.cna.com/products/property). CNA; Product by customer size; placements and capacity. Accessed 2026-09-28.

### Commercial Property Insurance Guide

8. [Commercial Insurance Guide](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm). California Department of Insurance; What Should I Expect from a Broker-Agent; Commercial Property: Coverage Sections, Limits of Insurance, and Coinsurance; Covered Causes of Loss; Valuation Types; Inland Marine. Accessed 2026-09-16.
9. [Business Interruption Insurance/Businessowner’s Policies (BOP)](https://content.naic.org/cipr-topics/business-interruptionbusinessowners-policies-bop). National Association of Insurance Commissioners; Background; Commercial Property and Business Interruption bullets. Accessed 2026-09-16.
10. [Commercial property insurance guide](https://www.tdi.texas.gov/pubs/consumer/cb021.html). Texas Department of Insurance; Introduction; Coverage options; Shopping for commercial property insurance; Saving money on your insurance. Accessed 2026-09-16.

Updated 2026-09-30. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

## Aon Reviews

Review Score: 6.1 / 10 from 3 rated sources, equally weighted.

Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts.

- J.D. Power: Aon study score 822 (out of 1000). Historical 2017 large-commercial-broker study; U.S. and Canada commercial insurance decision-makers at large organizations. J.D. Power reports 2,506 evaluations across the study, not Aon-specific responses; the Aon respondent count is not stated. Period: 2017 study; ranked 3rd among large commercial brokers; study-wide population 2,506, not Aon review count. Checked 2026-09-29. [Diversity of Offerings Becomes Key Differentiator for Large Commercial Insurers, JD Power Finds](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 1.2 (out of 5); 782 reviews. Global www.aon.com profile merged with other Aon profiles; mixed experiences include pensions, travel, professional indemnity and Australian business quotation service. The two latter complaints are individual unverified allegations, not evidence of U.S. commercial-placement outcomes or insurer fault. Trustpilot says reviews may not be representative because the company has not recently invited reviews. Period: Displayed 2026-09-29; page separately showed 198 reviews in the last 12 months. Checked 2026-09-29. [Aon Reviews](https://www.trustpilot.com/review/www.aon.com)
- BBB: BBB business grade B− (BBB letter grade; stated reason: failure to respond to two filed complaints). BBB of Chicago & Northern Illinois profile for Aon plc; the business grade is BBB’s own measure, not customer stars. Checked 2026-09-29. [Aon plc | BBB Business Profile](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291)
- BBB: BBB customer review average 1.6 (out of 5); 5 reviews. BBB of Chicago & Northern Illinois customer reviews for Aon plc; some reviews are about employee-benefit and medical-expense issues. Period: checked 2026-09-29. Checked 2026-09-29. [Aon plc | BBB Reviews](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291/customer-reviews)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/aon/reviews).

## CNA Reviews

Review Score: 9.0 / 10 from 1 rated source, equally weighted.

Customer feedback on CNA is mixed and hard to compare. NerdWallet gave it 4.5 out of 5 for manufacturers, while Trustpilot shows about 1.4 out of 5 from 49 mostly self-selected reviews.

- NerdWallet: NerdWallet editorial rating for manufacturers 4.5/5 (Editorial rating). NerdWallet editorial assessment of CNA for U.S. manufacturers, not consumer average. Period: Published 2026-03-26. Checked 2026-09-29. [Best Insurance for Manufacturers in 2026](https://www.nerdwallet.com/business/insurance/learn/manufacturers)
- Trustpilot: Displayed Trustpilot TrustScore 1.4/5 page text; 1.5/5 badge (TrustScore out of 5); 49 reviews. CNA.com profile, mixed business and consumer/LTC reports; self-selected, not representative commercial P&C sample. Period: 14 reviews in prior 12 months; 2026-09-29. Checked 2026-09-29. [CNA customer reviews](https://www.trustpilot.com/review/www.cna.com)
- BBB: BBB customer-review average 1/5 (BBB star rating); 6 reviews. Long Term Care Insurance profile covering headquarters/corporate locations; not commercial P&C; six self-selected reviews. Period: Displayed 2026-09-29. Checked 2026-09-29. [CNA Financial Corporation customer reviews](https://www.bbb.org/us/il/chicago/profile/long-term-care-insurance/cna-financial-corporation-0683-90032439/customer-reviews)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/cna/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-cna/commercial-property.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://spot.insure/llms.txt)