--- title: "AIG vs Marsh McLennan Agency: Commercial Property Insurance" description: "AIG describes broad corporate property options; Marsh McLennan Agency arranges industry-tailored placements." canonical: "https://spot.insure/compare/aig-vs-marsh-mclennan-agency/commercial-property" page-type: "line-comparison" updated-at: "2026-09-30" comparison-pair: "aig-vs-marsh-mclennan-agency" provider-a: "aig" provider-b: "marsh-mclennan-agency" 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/aig-vs-marsh-mclennan-agency/commercial-property) ## Agent Guide **What this page is:** Focused comparison of AIG and Marsh McLennan Agency 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 AIG versus Marsh McLennan Agency. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide. **Questions this page answers:** - AIG vs Marsh McLennan Agency for Commercial Property Insurance: how do they differ? - Which is better for Commercial Property Insurance, AIG or Marsh McLennan Agency? - What does AIG or Marsh McLennan Agency publish about Commercial Property Insurance (limits, eligibility, claims, add-ons)? - What should I confirm in a quote for Commercial Property Insurance from AIG or Marsh McLennan Agency? **Key facts:** - Line: Commercial Property Insurance. Providers: AIG and Marsh McLennan Agency. - 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:** - [AIG vs Marsh McLennan Agency](https://spot.insure/compare/aig-vs-marsh-mclennan-agency) — parent: all coverage lines for this pair - [Commercial Property Insurance guide](https://spot.insure/coverage/commercial-property) — coverage explainer for this line - [AIG profile](https://spot.insure/insurance-providers/aig) — provider profile (evidence) - [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) — provider profile (evidence) - [AIG vs Marsh McLennan Agency Builders Risk Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/builders-risk) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Cargo and Transit Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/cargo-transit) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Commercial Auto Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/commercial-auto) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Crime Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/crime) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Cyber Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/cyber) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency D&O Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/directors-officers) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Employment Practices Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/employment-practices) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/fiduciary) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency General Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/general-liability) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Kidnap and Ransom Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/kidnap-ransom) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Media Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/media) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/workers-compensation) — sibling comparison (other line, or other pair for this line) - [AIG vs Alliance Risk Commercial Property Insurance](https://spot.insure/compare/aig-vs-alliance-risk/commercial-property) — 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 The Baldwin Group Commercial Property Insurance](https://spot.insure/compare/aig-vs-baldwin/commercial-property) — sibling comparison (other line, or other pair for this line) - [AIG vs Beazley Commercial Property Insurance](https://spot.insure/compare/aig-vs-beazley/commercial-property) — sibling comparison (other line, or other pair for this line) - [AIG vs Berkshire Hathaway Specialty Insurance Commercial Property Insurance](https://spot.insure/compare/aig-vs-berkshire-hathaway-specialty-insurance/commercial-property) — sibling comparison (other line, or other pair for this line) - [AIG vs CFC Commercial Property Insurance](https://spot.insure/compare/aig-vs-cfc/commercial-property) — sibling comparison (other line, or other pair for this line) # AIG vs Marsh McLennan Agency: How Do They Compare for Commercial Property Insurance? AIG describes broad corporate property options; Marsh McLennan Agency arranges industry-tailored placements. ## Research Scope and Use Use this comparison to evaluate AIG and Marsh McLennan Agency 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 AIG describes broad corporate property options; Marsh McLennan Agency arranges industry-tailored placements. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") ## What Is AIG? AIG is the marketing name for American International Group, Inc.; AIG says its insurance products are written or provided by subsidiaries or affiliates. Its U.S. business pages list commercial casualty, property, cyber, management and professional liability, and specialty programs, but a brand-level page does not identify the insurer for a particular policy. [1](https://www.aig.com/investor-relations "Investor Relations") [2](https://www.aig.com/home/risk-solutions/business "Business") [AIG profile](https://spot.insure/insurance-providers/aig) ## What Is Marsh McLennan Agency? Marsh McLennan Agency provides business insurance and employee health and benefits, alongside retirement, wealth, and private-client services across the United States and Canada. Its US small-business page lists six common coverage types and directs buyers to request a personalized quote by phone; the insurer and terms for a specific placement must be confirmed in the proposal. [4](https://www.marshmma.com/us/mma/about-us.html "Who We Are") [5](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) ## 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. [7](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm "Commercial Insurance Guide") [8](https://content.naic.org/cipr-topics/business-interruptionbusinessowners-policies-bop "Business Interruption Insurance/Businessowner’s Policies (BOP)") [9](https://www.tdi.texas.gov/pubs/consumer/cb021.html "Commercial property insurance guide") ## Key Differences in Commercial Property Insurance ### AIG describes broad corporate property options; Marsh McLennan Agency arranges industry-tailored placements. AIG lists hospitals, universities, and global manufacturers among potential property clients. Marsh McLennan Agency describes property placements tailored to an organization’s industry and property risks, with exact classes and terms established through placement. A buyer should test the fit of its particular locations and occupancy with each route; neither public description provides a complete eligibility schedule. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") ### AIG describes broad corporate property options; Marsh McLennan Agency arranges industry-tailored placements. AIG describes protection for physical property and contents, with the issued policy setting terms. Marsh McLennan Agency directs buyers to an advisor or specialist to discuss placement and does not promise a quote or binding timeline. That makes the first practical step different: an AIG broker can identify a named product proposal, while MMA begins with an adviser conversation about the risk. Request the same schedule and valuation basis before comparing terms. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") ## What to Confirm in Commercial Property Insurance Quotes - Ask AIG which issuing company, locations, and covered causes apply. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") - Ask MMA which insurer and policy form it proposes and what information its adviser needs. [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") ## Offering Details | Criteria | AIG Commercial Property and Retail Property | Marsh McLennan Agency commercial property (official overview) | | --- | --- | --- | | Role in This Line | AIG markets commercial property insurance and identifies Retail Property as a product area. For domestic and global corporate and risk-management clients, the page describes both risk-transfer insurance and non-risk-transfer fronting or captive solutions; those structures are not the same as an insurance policy issued by AIG. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") (Evidence: Company-reported; scope: AIG’s U.S. Commercial Property page. It does not identify the insurer or fronting company for a particular buyer’s placement..) | Marsh McLennan Agency describes arranging commercial property for the audience stated on the cited product page. [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") (Evidence: Company-reported; scope: commercial property marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | | Who It’s For | AIG names businesses including hospitals, universities and global manufacturing among the varied organizations for which it has property options. The page does not provide a complete eligible-class list or state-by-state availability schedule. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") (Evidence: Company-reported; scope: Illustrative customer types on AIG’s U.S. Commercial Property page; examples do not establish an applicant’s eligibility..) | Commercial property organizations; exact property classes and terms are set through placement. [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") (Evidence: Company-reported; scope: commercial property marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | | Coverage Features | AIG describes commercial property insurance as protecting business physical property against unexpected events such as storm damage, theft and vandalism, and says coverage can extend to certain work-related contents such as office equipment, furniture, fixtures and inventory. These are examples; actual coverage depends on the facts and each policy’s terms, conditions and exclusions. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") (Evidence: Company-reported; scope: General property description on AIG’s product page, not a summary of a specific policy or all covered causes of loss..) | The cited product page describes commercial property insurance tailored to an organization's industry and stated property risks. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") (Evidence: Company-reported; scope: commercial property marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | | Limits and Retentions | The reviewed page does not state standard property limits, deductibles or retentions for a buyer. Confirm those amounts, covered causes and conditions in the quote and issued policy. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") (Evidence: Not publicly disclosed; scope: AIG’s U.S. Commercial Property marketing page reviewed 2026-09-30; no buyer-specific quote or policy form was reviewed..) | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) | | Risk Services | AIG says property risk engineers help clients identify and mitigate loss and that its engineers collaborate with clients on solutions tailored to risk factors. The page does not state that these services are included for every account or guarantee reduced losses. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") (Evidence: Company-reported; scope: Company-described commercial property risk engineering; account-specific service availability is not stated..) | Confirm in your quote. | | How to Apply | Confirm in your quote. | The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. [6](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") (Evidence: Company-reported; scope: commercial property marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | | Claims Support | AIG describes a dedicated Property claims team and a claims promise intended to enable prompt resolution. The page does not publish a service-level deadline or claim outcome guarantee. [3](https://www.aig.com/home/risk-solutions/business/commercial-property "Commercial Property Insurance") (Evidence: Company-reported; scope: AIG’s company-reported general property claims description; no account-specific claims handling terms were reviewed..) | Confirm in your quote. | ## Full Comparison - [AIG vs Marsh McLennan Agency](https://spot.insure/compare/aig-vs-marsh-mclennan-agency): 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. - [AIG vs Marsh McLennan Agency Builders Risk Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/builders-risk) - [AIG vs Marsh McLennan Agency Cargo and Transit Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/cargo-transit) - [AIG vs Marsh McLennan Agency Commercial Auto Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/commercial-auto) - [AIG vs Marsh McLennan Agency Crime Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/crime) - [AIG vs Marsh McLennan Agency Cyber Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/cyber) - [AIG vs Marsh McLennan Agency D&O Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/directors-officers) - [AIG vs Marsh McLennan Agency Employment Practices Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/employment-practices) - [AIG vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/fiduciary) - [AIG vs Marsh McLennan Agency General Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/general-liability) - [AIG vs Marsh McLennan Agency Kidnap and Ransom Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/kidnap-ransom) - [AIG vs Marsh McLennan Agency Media Liability Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/media) - [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions) - [AIG vs Marsh McLennan Agency Workers’ Compensation Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/workers-compensation) - [AIG vs Alliance Risk Commercial Property Insurance](https://spot.insure/compare/aig-vs-alliance-risk/commercial-property) - [AIG vs Aon Commercial Property Insurance](https://spot.insure/compare/aig-vs-aon/commercial-property) - [AIG vs The Baldwin Group Commercial Property Insurance](https://spot.insure/compare/aig-vs-baldwin/commercial-property) - [AIG vs Beazley Commercial Property Insurance](https://spot.insure/compare/aig-vs-beazley/commercial-property) - [AIG vs Berkshire Hathaway Specialty Insurance Commercial Property Insurance](https://spot.insure/compare/aig-vs-berkshire-hathaway-specialty-insurance/commercial-property) - [AIG vs CFC Commercial Property Insurance](https://spot.insure/compare/aig-vs-cfc/commercial-property) ## Sources ### AIG 1. [Investor Relations](https://www.aig.com/investor-relations). American International Group, Inc. (AIG); About AIG and legal footer; lines 244–246 and 327–331. Accessed 2026-09-28. 2. [Business](https://www.aig.com/home/risk-solutions/business). AIG US; Surplus Lines heading and paragraph, lines 357–359. Accessed 2026-09-28. 3. [Commercial Property Insurance](https://www.aig.com/home/risk-solutions/business/commercial-property). AIG US; Property risk description and customer examples, lines 242–245; claims, risk engineering and Retail Property solutions, lines 250–276; general property examples and actual-policy caveat, lines 298–303; legal footer, lines 348–351.. Accessed 2026-09-30. ### Marsh McLennan Agency 4. [Who We Are](https://www.marshmma.com/us/mma/about-us.html). Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role.. Accessed 2026-09-29. 5. [Small Business Insurance Solutions](https://www.marshmma.com/us/solutions/small-business.html). Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted.. Accessed 2026-09-29. 6. [Property Insurance | MMA](https://www.marshmma.com/us/solutions/property.html). Marsh McLennan Agency; Commercial property insurance tailored to industry and unique risks; property page sections.. Accessed 2026-09-30. ### Commercial Property Insurance Guide 7. [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. 8. [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. 9. [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. ## AIG Reviews Review Score: 4.4 / 10 from 2 rated sources, equally weighted. Customer ratings for AIG are low: Trustpilot shows 1.9 out of 5 from 252 reviews, and NerdWallet gives 2.5 stars and notes more claims complaints than expected. These pages cover many AIG products and countries, so they only loosely describe business insurance. - NerdWallet: NerdWallet editorial rating 2.5 (stars). NerdWallet’s editorial business-insurance comparison; the AIG entry concerns commercial liability and property insurance, not a quantified policyholder-review sample. The page’s complaint statement and 2.5-star editorial rating are source-specific and must not be recast as a consumer average. Checked 2026-09-29. [Business Insurance: Get Quotes and Coverage Today](https://www.nerdwallet.com/business/insurance/best) - Trustpilot: Trustpilot TrustScore 1.9 (out of 5); 252 reviews. Consumer reviews on aig.com’s Trustpilot profile span products and countries, including personal, travel, device/service and other experiences; they do not isolate U.S. commercial-P&C policyholders or a single issuing insurer. Checked 2026-09-29. [AIG Reviews](https://www.trustpilot.com/review/aig.com) - ConsumerAffairs: ConsumerAffairs average 1.0 (out of 5); 274 reviews. ConsumerAffairs page titled AIG Life Insurance Reviews, updated 2026-08-14. The page mixes life and high-net-worth home references and reviewers may describe other AIG relationships; it is not a commercial-P&C-only population. Checked 2026-09-29. [AIG Life Insurance Reviews](https://www.consumeraffairs.com/insurance/aig_life.html) - BBB: Complaints shown, prior 3 years 270. BBB’s American International Group, Inc. headquarters profile and corporate-owned locations (86 listed locations); complaint data is not limited to commercial insurance or a particular risk-bearing insurer. BBB says displayed complaint text may not represent every complaint. Period: Three years ending as displayed 2026-09-29. Checked 2026-09-29. [American International Group, Inc. (AIG) BBB Complaints](https://www.bbb.org/us/ny/new-york/profile/insurance-companies/american-international-group-inc-aig-0121-1515/complaints) Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/aig/reviews). ## Marsh McLennan Agency Reviews Review Score: 8.2 / 10 from 2 rated sources, equally weighted. There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years. - Trustpilot: TrustScore 3.2 (out of 5); 1 reviews. Trustpilot profile for marshmma.com, MMA's own domain. Unclaimed; MMA has not invited reviews. Period: checked 2026-09-29. Checked 2026-09-29. [marshmma.com Trustpilot profile](https://www.trustpilot.com/review/marshmma.com) - Trustpilot: TrustScore (Marsh brand) 1.3 (out of 5); 115 reviews. Trustpilot page for marsh.com, the global Marsh brand (mostly individual and non-US customers). This is a different entity from MMA. Period: checked 2026-09-29. Checked 2026-09-29. [Marsh Reviews](https://www.trustpilot.com/review/www.marsh.com) - BBB: BBB business grade A. BBB San Diego-area profile for Marsh & McLennan Agency LLC (accredited). MMA has separate BBB profiles per office; Dayton and Schaumburg both show A+. Checked 2026-09-29. [Marsh & McLennan Agency LLC (San Diego) BBB](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103) - BBB: Complaints 4. Same San Diego-area profile; zero customer reviews. No client-count denominator. Period: closed in the last three years (checked 2026-09-29). Checked 2026-09-29. [Marsh & McLennan Agency LLC — BBB Complaints](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/complaints); [Marsh & McLennan Agency LLC — BBB Reviews](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/customer-reviews) Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/marsh-mclennan-agency/reviews). ## Agent and Developer Resources - [Markdown page](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/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)