---
title: "Marsh McLennan Agency vs USI Insurance Services: Commercial Property Insurance"
description: "USI Insurance Services"
canonical: "https://spot.insure/compare/marsh-mclennan-agency-vs-usi/commercial-property"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "marsh-mclennan-agency-vs-usi"
provider-a: "marsh-mclennan-agency"
provider-b: "usi"
coverage-line: "commercial-property"
---

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[Human-readable page](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/commercial-property)

## Agent Guide

**What this page is:** Focused comparison of Marsh McLennan Agency and USI Insurance Services 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 Marsh McLennan Agency versus USI Insurance Services. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

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

**Key facts:**
- Line: Commercial Property Insurance. Providers: Marsh McLennan Agency and USI Insurance Services.
- 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:**
- [Marsh McLennan Agency vs USI Insurance Services](https://spot.insure/compare/marsh-mclennan-agency-vs-usi) — parent: all coverage lines for this pair
- [Commercial Property Insurance guide](https://spot.insure/coverage/commercial-property) — coverage explainer for this line
- [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) — provider profile (evidence)
- [USI Insurance Services profile](https://spot.insure/insurance-providers/usi) — provider profile (evidence)
- [Marsh McLennan Agency vs USI Insurance Services Crime Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/crime) — sibling comparison (other line, or other pair for this line)
- [Marsh McLennan Agency vs USI Insurance Services Employment Practices Liability Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Marsh McLennan Agency vs USI Insurance Services Fiduciary Liability Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Marsh McLennan Agency vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs Marsh McLennan Agency Commercial Property Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/commercial-property) — sibling comparison (other line, or other pair for this line)
- [AIG vs USI Insurance Services Commercial Property Insurance](https://spot.insure/compare/aig-vs-usi/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Marsh McLennan Agency Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs USI Insurance Services Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-usi/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Marsh McLennan Agency Commercial Property Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs USI Insurance Services Commercial Property Insurance](https://spot.insure/compare/aon-vs-usi/commercial-property) — sibling comparison (other line, or other pair for this line)

# Marsh McLennan Agency vs USI Insurance Services: How Do They Compare for Commercial Property Insurance?

USI Insurance Services

## Research Scope and Use

Use this comparison to evaluate Marsh McLennan Agency and USI Insurance Services 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

USI Insurance Services [3](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance")

## 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. [1](https://www.marshmma.com/us/mma/about-us.html "Who We Are") [2](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 USI Insurance Services?

USI suits software and hardware companies from seed stage through IPO seeking consultative broker support; buyers wanting a self-serve quote should compare digital agencies. Insurer commissions are typical and contingent compensation may also apply. [4](https://www.usi.com/about-usi "The Power of ONE") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance") [6](https://www.usi.com/commissions-fees/ "Commissions and Fees")

[USI Insurance Services profile](https://spot.insure/insurance-providers/usi)

## 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 Detail and Fit

USI identifies property analysts and risk-control specialists for commercial property clients, while Marsh McLennan Agency describes tailored placement and an adviser contact route. [3](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance")

USI says its property-and-casualty team uses dedicated property analysts and risk-control specialists with its USI ONE analytics process to target property exposures. Marsh McLennan Agency’s overview describes tailoring commercial property to industry and stated risks but does not detail an equivalent analytics or risk-control service. Ask both what pre-bind property review they will provide and who conducts it. [3](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance")

### Placement and Buyer Process

USI separately identifies property, business income and contingent business income placement for technology clients, serving companies from seed stage through IPO. Marsh McLennan Agency’s overview does not specify these components or a technology segment. A technology company should ask whether off-premises equipment and interruption at a service provider can be included, and request the limits for each coverage part. [3](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance")

## What to Confirm in Commercial Property Insurance Quotes

- USI directs inquiries to its property-and-casualty email or a local office; Marsh McLennan Agency invites contact with an adviser or specialist. Neither overview fixes universal policy terms. Share the same locations, values and business-income assumptions with both before comparing proposals. [3](https://www.marshmma.com/us/solutions/property.html "Property Insurance | MMA") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance")

## Offering Details

| Criteria | Marsh McLennan Agency commercial property (official overview) | USI Commercial Property Brokerage |
| --- | --- | --- |
| Role in This Line | Marsh McLennan Agency describes arranging commercial property for the audience stated on the cited product page. [3](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..) | USI is a broker for commercial property insurance. Its property & casualty team places property coverage for clients rather than underwriting it, and its Technology practice separately places property, business-income and contingent business-income coverage for technology clients. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance") (Evidence: Company-reported; scope: Property & Casualty and Technology practice pages..) |
| Issuing Insurer | Confirm in your quote. | Neither page names the insurers USI uses for commercial property placements. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") (Evidence: Not publicly disclosed; scope: Pages as read on 2026-09-23..) |
| Who It’s For | Commercial property organizations; exact property classes and terms are set through placement. [3](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..) | USI's property & casualty team describes serving middle-market clients across many named industries (including construction, hospitality, real estate and manufacturing-adjacent sectors), while its Technology practice specifically serves software, hardware, networking, semiconductor and communications companies from early seed stage through IPO. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance") (Evidence: Company-reported; scope: Company description of client segments for each practice..) |
| Coverage Features | 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. [3](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..) | USI's Technology practice itemizes property, business income and contingent business income as distinct placement components; its broader property & casualty team lists "Property Coverage" among the risk exposures it advises on. [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance") [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") (Evidence: Company-reported; scope: Practice pages' coverage lists; actual insuring agreements, valuation basis and exclusions are set by the issued policy..) |
| Limits and Retentions | 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. [3](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..) | Neither page publishes property limit, deductible or valuation figures. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") (Evidence: Not publicly disclosed; scope: Pages as read on 2026-09-23..) |
| Risk Services | Confirm in your quote. | USI says its property & casualty resource team includes dedicated property analysts and risk control specialists who use its USI ONE analytics process to identify and target property risk exposures. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") (Evidence: Company-reported; scope: Company description of team composition and process; outcomes are not independently verified..) |
| How to Apply | 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. [3](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..) | USI directs commercial property inquiries to pcinquiries@usi.com or a local USI office. [7](https://www.usi.com/property-casualty "P&C Insurance and Risk Consulting") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance") (Evidence: Company-reported; scope: Contact instructions on the Property & Casualty and Technology pages..) |

## Full Comparison

- [Marsh McLennan Agency vs USI Insurance Services](https://spot.insure/compare/marsh-mclennan-agency-vs-usi): 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.
- [Marsh McLennan Agency vs USI Insurance Services Crime Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/crime)
- [Marsh McLennan Agency vs USI Insurance Services Employment Practices Liability Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/employment-practices)
- [Marsh McLennan Agency vs USI Insurance Services Fiduciary Liability Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/fiduciary)
- [Marsh McLennan Agency vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/professional-errors-omissions)
- [AIG vs Marsh McLennan Agency Commercial Property Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/commercial-property)
- [AIG vs USI Insurance Services Commercial Property Insurance](https://spot.insure/compare/aig-vs-usi/commercial-property)
- [Alliance Risk vs Marsh McLennan Agency Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency/commercial-property)
- [Alliance Risk vs USI Insurance Services Commercial Property Insurance](https://spot.insure/compare/alliance-risk-vs-usi/commercial-property)
- [Aon vs Marsh McLennan Agency Commercial Property Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/commercial-property)
- [Aon vs USI Insurance Services Commercial Property Insurance](https://spot.insure/compare/aon-vs-usi/commercial-property)

## Sources

### Marsh McLennan Agency

1. [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.
2. [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.
3. [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.

### USI Insurance Services

4. [The Power of ONE](https://www.usi.com/about-usi). USI Insurance Services; History, client-count, nationwide office, and P&C / benefits / personal risk / retirement description. Accessed 2026-09-16.
5. [Technology Insurance](https://www.usi.com/property-casualty/technology/). USI Insurance Services; USI's Technology Practice provides risk management advisory and insurance placement for: Property, Business Income and Contingent Business Income.... Accessed 2026-09-23.
6. [Commissions and Fees](https://www.usi.com/commissions-fees/). USI Insurance Services; Licensed-producer authority, insurer-paid commission default, contingent compensation, and client request right. Accessed 2026-09-16.
7. [P&C Insurance and Risk Consulting](https://www.usi.com/property-casualty). USI Insurance Services; risk management and insurance advice on broad risk exposures such as...Property Coverage...; property analysts...risk control specialists.... Accessed 2026-09-23.

### 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.

## 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).

## USI Insurance Services Reviews

Review Score: 6.4 / 10 from 1 rated source, equally weighted.

USI’s public feedback is too sparse and office-specific for a firmwide verdict. Check the local team’s responsiveness and experience with your type of business.

- BBB: BBB complaint count 4. BBB business-profile grade is distinct from customer-review stars; branch/parent scope matters. Period: three years preceding access 2026-09-25. Checked 2026-09-25. [BBB result for USI Insurance Services](https://www.bbb.org/us/ny/valhalla/profile/insurance-agency/usi-insurance-services-0121-97856/complaints)
- Google reviews via Birdeye: Birdeye office listing rating from Google reviews 3.2 (5 stars); 9 reviews. One Louisville office listing, not firmwide. Birdeye shows Google-origin reviews (9) and 0 Birdeye-native reviews; this duplicates a Google source stream and is not independent of Google. Period: accessed 2026-09-25. Checked 2026-09-25. [USI office, Louisville, KY — Birdeye listing of Google reviews](https://reviews.birdeye.com/usi-insurance-145632496752867)

Reviewed 2026-09-25. [Read the sourced review](https://spot.insure/insurance-providers/usi/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/marsh-mclennan-agency-vs-usi/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)