Aon vs USI Insurance Services: How Do They Compare for Surety Bonds?

Aon says its global construction practice designs and places risk solutions and uses broking experience and a global network across construction insurance lines. For construction surety, this is evidence of Aon’s brokered market offering; the page does not identify the insurer for a buyer’s placement. ³Company-reported. Aon’s global construction and infrastructure practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement.

USI is a surety bond broker, not a surety. It says it is one of the leading domestic and international surety brokers and negotiates bonding capacity and terms with surety underwriters on a client's behalf. ⁷Company-reported. Surety Bond practice page.

The reviewed practice page does not name the insurer or producing legal entity for a specific placement. Ask for both on the quote and binder. ³Not found in reviewed sources. Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement.

USI does not name surety companies on its practice page; it describes placing bonds through its surety-market relationships rather than a fixed panel. ⁷Not publicly disclosed. Page as read on 2026-09-23.

Aon describes its global construction and infrastructure practice as serving contractors, owners, developers, engineers, architects, designers, financiers and investors, and says it works with organizations of varied sizes and complexity. ³Company-reported. Audience described for Aon’s global construction and infrastructure practice. It does not establish U.S. state availability or underwriting eligibility for a placement.

USI says its surety practice has a long history serving general contractors, trade contractors, highway/heavy construction projects, construction managers, developers and design-builders in the public and private sectors, and that its surety network also has experience outside construction. ⁷Company-reported. Company description of client base.

Aon lists construction surety bonds and describes them as financial security intended to guarantee contractor performance and payment to specified subcontractors, laborers and material suppliers. Actual bond obligations depend on the bond form and its terms. ³Company-reported. Aon’s marketing description of the brokerage/coverage area. The page is not the insurer’s policy form and does not establish an insured's entitlement to coverage.

USI lists bid bonds, performance and payment bonds (domestic and international), established surety programs, commercial surety and financial obligations, and subcontractor default insurance among its construction and surety products. ⁷Company-reported. Practice page product list; actual bond forms and terms are set by the surety and obligee.

The reviewed page does not state a buyer-specific limit, retention, deductible or other placement terms. Confirm these in the quote, bond or issued policy. ³Not publicly disclosed. Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed.

USI does not publish standard bonding-capacity figures; it cites individual case studies (a general contractor's bonding limits supporting a $10,000,000 revenue increase, and a mechanical contractor whose surety line supported $110,000,000 in revenue) rather than a general limit range. ⁷Not publicly disclosed. Case-study figures on the page are specific to those named accounts, not a published capacity table.

Aon describes project risk-advisory services to understand project-specific risks and develop risk-transfer, management or mitigation strategies. It also describes a global construction team and market access. These are company-reported brokerage and advisory services, not coverage benefits. ³Company-reported. Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated.

USI describes a proprietary bond submission process that summarizes a client's underwriting and operational information alongside its own analysis and recommendations, and says its surety professionals help clients present their financials to the surety market and negotiate terms. ⁷Company-reported. Company description of its submission methodology.

Confirm in your quote.

USI directs contractors and other prospective surety clients to email pcinquiries@usi.com or contact a local USI office. ⁷Company-reported. Contact instructions on the Surety Bond practice page.