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. 1,2
What Is WTW?
WTW is an insurance broker whose documented services include manufacturing risk-program design and specialist property and cargo programs. Its marketed property scope includes residential real-estate stakeholders and a separate integrated data-center program; other named capabilities vary in date and geography. 4,5,6,7,8
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. 10,11,12
Key Differences in Commercial Property Insurance
Specialized Property Solutions
WTW describes property placements for residential real-estate stakeholders and an integrated property solution for data-center construction and operations. Aon describes property service for organizations broadly, including buildings, contents, and inventory, and notes possible business interruption. A buyer in either sector can ask both for asset-specific forms and limits. 5 3
Policy and Binder Review
WTW’s North American brokerage terms describe reviewing binders, policies, and endorsements against negotiated terms, and say an insurer quote alone does not confirm coverage. Aon describes broker-built programs and claims advocacy but does not state the same document-review process in its property record. Ask Aon how it checks issued documents against the negotiated placement. 9 3
Risk Modeling
Aon describes catastrophe modeling, risk control, and a U.S.-available Property Risk Analyzer. WTW’s reviewed property claims focus on specialized placements and policy-document review, without describing comparable modeling. Ask WTW what analysis is offered for your locations and Aon which scenarios its model covers. 3 5
What to Confirm in Commercial Property Insurance Quotes
- For WTW, will its document review include every binder, endorsement, and location schedule in your placement?
- Which Aon catastrophe modeling assumptions, scenarios, and carrier layers apply to your portfolio?
Review Scores
These averages can combine ratings for different products, locations, and customer groups, including approximate BBB grade conversions. Read each review for the sources, scope, and calculation.
Aon
Review Score
3 rated sources
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.[4][6][7]
Read Aon reviewsWTW
Review Score
1 rated source
WTW has little useful review evidence for a business buyer. Its one counted score is 807 out of 1,000 from a 2017 J.D. Power study of large commercial brokers, and Trustpilot's 2.1 from 9 reviews isn't counted.[4][2]
Read WTW reviewsOffering Details
Aon vs WTW: Commercial Property Insurance: documented features by provider
| Criteria | Aon Commercial Property brokerage and risk-advisory offering | WTW Commercial Property Brokerage |
|---|---|---|
| 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. 3Company-reported. Aon’s official global product/capability page. The statement is limited to Aon’s marketing of brokerage or advisory services, not policy issuance. | Under WTW's North American Corporate Risk & Broking terms, WTW normally acts as the client's insurance intermediary for engagements governed by those terms. 9Company-reported. Terms for applicable North American Corporate Risk & Broking engagements. WTW also discloses separate insurer-side services in some arrangements; this does not determine the role in a specific engagement. |
| 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. 3Not found in reviewed sources. 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. | The reviewed WTW sources do not identify an issuing insurer for a specific commercial property placement. 9,8,5,7Not publicly disclosed. This is a gap in the cited marketing, annual-report, and brokerage materials; it does not mean WTW lacks insurer markets. Confirm the carrier on the quote and issued policy. |
| 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. 3Company-reported. 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. | Confirm in your quote. |
| 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. 3Company-reported. 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. | WTW describes property placements for residential real-estate stakeholders and an integrated property solution for data-center construction and operations. 5,7Company-reported. These are separately scoped industry solutions. They do not establish terms or eligibility for every commercial-property placement. |
| 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. 3Not publicly disclosed. Aon’s global product/capability page reviewed 2026-09-30; no buyer quote or policy form was reviewed. | The reviewed sources do not state a buyer-specific commercial property limit, retention, or deductible. 9,8,5,7Not publicly disclosed. No limit or deductible is inferred from general marketing or WTW's brokerage role; the insurer's quote and issued forms control. |
| 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. 3Company-reported. Company-reported brokerage and advisory services. Account-specific service terms are not stated. | WTW's North American terms describe reviewing binders, policies, and endorsements against the terms negotiated with the insurer. 9Company-reported. Broker document-review process under the cited terms, when WTW handles this line's placement. It does not certify that a policy covers a claim or replace the issued wording. |
| How to Apply | Confirm in your quote. | WTW's North American terms say an insurer quote is not confirmation of coverage; if the client orders binding, WTW seeks a formal insurer commitment, typically a binder. 9Company-reported. Applies to placements governed by the cited North American Corporate Risk & Broking terms. It does not establish a self-service quote route or promise coverage availability for this line. |
Full Comparison
More Aon vs WTW Comparisons
Other Commercial Property Insurance Comparisons
Sources
Aon
- Commercial Risk Solutions U.S. Brokerage Terms of Service. 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.
- 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.
- 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.
WTW
- Manufacturing. WTW; “How WTW can help manufacturers”; “How we serve our clients”; North America licensed-entity disclaimer. Accessed 2026-09-28.
- Digital Infrastructure Protector. WTW; Integrated policy coverage for building, operational property, marine and cargo under one policy; integrated data-center construction/operations; cyber and liability protection in broader solution; separate-policy preference caveat; capacity and North America licensed-entity disclaimer. Accessed 2026-09-29.
- Marine. WTW; “Our solutions” cargo brokerage; marine specialist count; claims advice and average-adjuster service; North America licensed-entity disclaimer. Accessed 2026-09-28.
- Residential | WTW. WTW; “Specialized insurance products”: lists property insurance and financial lines, including errors and omissions; inspected official indexed text 2026-09-29. Direct reader access failed; indexed page crawl was about five months old. Accessed 2026-09-29.
- WTW 2024 Form 10-K. U.S. Securities and Exchange Commission / Willis Towers Watson Public Limited Company; Part I, Item 1, FINEX and Surety business descriptions: the 2024 annual report identifies management and professional liability, employment practices, crime, cyber and M&A insurance solutions, and a global bond-placement team; indexed passages rechecked 2026-09-29. Accessed 2026-09-29.
- Corporate Risk & Broking Brokerage Terms, Conditions & Disclosures (Canada & US). WTW; Document dated 2025-06-01; pp. 4–6: broker/intermediary role, quote versus binding process, review of binders/policies/endorsements, claims reporting and affiliate disclosures. Reused from the current WTW provider source record after direct PDF retrieval was blocked. Accessed 2026-09-28.
Commercial Property Insurance Guide
- Commercial Insurance Guide. 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.
- Business Interruption Insurance/Businessowner’s Policies (BOP). National Association of Insurance Commissioners; Background; Commercial Property and Business Interruption bullets. Accessed 2026-09-16.
- Commercial property insurance guide. Texas Department of Insurance; Introduction; Coverage options; Shopping for commercial property insurance; Saving money on your insurance. Accessed 2026-09-16.





