Aon vs Harper: General Liability Insurance

What Are the Key Differences Between Aon and Harper General Liability Insurance?

A construction practice against Harper’s stated business appetite

Aon describes construction and infrastructure work for contractors, developers, owners, and technical professionals. Harper’s GL record names its buyer eligibility classes, so a business outside those stated classes should confirm appetite before preparing a submission. The two records frame access differently: Aon describes a sector practice, while Harper identifies whom its GL product targets. [1] [3]

Advisory resources and line services

Aon says its project advisers develop risk-transfer and mitigation strategies. Harper lists line services for GL buyers, giving a more product-specific service description. Buyers should ask Harper what assistance is included with the policy and Aon what project-specific work is included in placement; neither general statement should be assumed to be an insured policy benefit. [1] [3]

What Should You Confirm in Aon and Harper General Liability Insurance Quotes?

Ask Aon which construction classes and project sizes its practice will submit. [1] [3]
Ask Harper to confirm your class and describe the GL service included after binding. [1] [3]

Provider coverage details

Aon

role: 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. Aon’s global construction and infrastructure practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement.company-reportedSource ↗
eligibility: 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. Audience described for Aon’s global construction and infrastructure practice. It does not establish U.S. state availability or underwriting eligibility for a placement.company-reportedSource ↗
coverage: 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. 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.company-reportedSource ↗
services: 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. Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated.company-reportedSource ↗
insurer: 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. 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.not-foundSource ↗
limits: 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. Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed.not-disclosedSource ↗

Harper

role: Harper places general liability coverage by taking one application to multiple insurers rather than underwriting the policy itself, and a specialist reviews the business before it is quoted. Harper's own general liability product page. Describes the brokerage process, not an insurer or underwriting decision.company-reportedSource ↗
eligibility: Harper markets general liability to businesses that need a certificate for a lease, client contract or license, and specifically says hard-to-place or previously declined businesses are the operations it targets. Product-page marketing copy; not an eligibility guarantee for a particular applicant.company-reportedSource ↗
coverage: Harper describes the general liability policies it places as covering bodily injury to third parties, property damage the business causes to others' property, and legal defense costs, including when a claim turns out to be groundless. Product-page coverage summary; the issued policy and its exclusions control the actual terms.company-reportedSource ↗
limits: Harper says most leases and contracts ask for $1 million per claim as a starting limit, and it will recommend higher limits when a business's situation calls for it. The page does not publish a maximum available limit. FAQ answer on the general liability page; actual limit options depend on the insurer and underwriting.company-reportedSource ↗
services: Harper says it issues certificates of insurance the same day a landlord, client or venue requests one, once a policy is in force. Product-page service claim; not independently timed or confirmed for a particular request.company-reportedSource ↗
application: You apply for Harper general liability through an online quote form (business details, state, revenue and coverage needs) that a specialist follows up on, rather than an instant-bind online purchase. Quote form and FAQ observed on the product page.company-reportedSource ↗
claims: The reviewed general liability page does not describe a claims-reporting process or claims-advocacy service specific to this line. Scoped to the general liability product page as read on 2026-09-23; the provider record separately describes general claims assistance across lines, not checked here for this line specifically.not-foundSource ↗

Aon describes construction and infrastructure work for contractors, developers, owners, and technical professionals, while Harper’s GL record names its buyer eligibility classes, so a business outside those stated classes should confirm appetite before preparing a submission.

Sources and records

01
Construction and Infrastructure Insurance and Risk Management
Aon · Construction client audience and global placement role, lines 123–126; offering descriptions lines 135–156; coverage-area taxonomy lines 167–195; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule. · accessed 2026-09-30
02
Commercial Insurance Guide
California Department of Insurance · Commercial General Liability; Commercial Automobile; What Should I Expect from a Broker-Agent?; How Are Commercial Policies Rated? · accessed 2026-09-16
03
General Liability Insurance
Harper · Product hero; Know your coverage: What is General Liability insurance?; Bodily injury, Property damage, Legal defense, Certificates on demand; Why Harper (specialist review, multiple insurers, same-day certificates); FAQ: Is general liability required by law?, What limits do I need?, What does it cost? · accessed 2026-09-23
04
Commercial general liability insurance
Insurance Information Institute · Coverage A; Coverage B; Coverage C; Purchasing commercial general liability insurance · accessed 2026-09-16
05
Commercial General Liability Coverage Form
ISO; specimen hosted by Hiscox · I.A pp.1–5; I.B pp.6–7; I.C pp.7–8; Supplementary Payments p.8; II pp.9–10; III p.10; IV pp.10–12 · accessed 2026-09-16