Aon vs Heffernan Insurance Brokers: How Do They Compare for General Liability Insurance?

Aon says its global construction practice designs and places risk solutions and uses broking experience and a global network across construction insurance lines. For general liability, 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.

Heffernan lists general liability among the basic coverages it places for business clients through its standard commercial-insurance brokerage, shopping insurers rather than underwriting the policy itself. ⁶Company-reported. Business Insurance Brokerage page as read on 2026-09-23.

Separately, Heffernan has partnered with Thimble Insurance Services to distribute an on-demand general liability product bought directly online, a distinct and narrower distribution model from its standard commercial brokerage placement. ⁸Company-reported. Short-Term General Liability page as read on 2026-09-23.

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.

For the Thimble-partnered on-demand product, Heffernan says policies are underwritten by A-rated insurers, naming Markel Insurance Company. The reviewed pages for Heffernan's standard commercial general liability placements do not name an insurer. ^8,6,7Company-reported. Short-Term General Liability page for the named insurer; Business Insurance and Small Business pages for the standard-placement gap, 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.

Heffernan's small-business division says it serves sole proprietors through fast-growing companies across industries including construction, food, health care, hospitality, nonprofits, real estate, technology, transportation, and vintners and growers, plus named specialty programs. ⁷Company-reported. Small Business Insurance page as read on 2026-09-23; no minimum size or exclusion was published.

Aon lists General Liability within construction liability and describes casualty protection for third-party bodily injury or property damage associated with negligent acts during construction or operations. A policy’s actual insureds, triggers, exclusions and conditions are not stated on this practice page. 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.

Heffernan describes general liability as covering bodily injury and property damage caused by a company, whether by its people or its products. ⁷Company-reported. Small Business Insurance page as read on 2026-09-23; the reviewed pages do not list specific exclusions or endorsements.

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.

Heffernan's Thimble-partnered on-demand product advertises $1 million or $2 million general liability limits, with pricing starting at $5 for short terms. ⁸Company-reported. Short-Term General Liability page as read on 2026-09-23; Thimble's own disclaimer says eligibility, pricing, and coverage vary by state, activity class, and other factors.

For its standard commercial general liability placements, Heffernan's reviewed pages do not publish limit, retention, or premium ranges. ^6,7Not publicly disclosed. Business Insurance and Small Business Insurance pages as read on 2026-09-23.

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.

For standard commercial clients, Heffernan says it provides claims services, loss control, HR consulting, and risk-management and assessment services alongside placed coverages such as general liability. ⁶Company-reported. Business Insurance Brokerage page as read on 2026-09-23; not general liability-specific and not described for the Thimble-partnered on-demand product.

Confirm in your quote.

The Thimble-partnered product is bought directly online with no paper forms, producing an ACORD certificate of insurance in under 30 seconds according to Heffernan's page. ⁸Company-reported. Short-Term General Liability page as read on 2026-09-23.