A&E Professional Liability Market Faces Reckoning as Claim Severity Soars

Insurers report higher claim severity in 2025, with defense costs and social inflation driving rate increases for 2026, according to Ames & Gough survey.
By: | February 26, 2026
architects reviewing project concept

The architects and engineers professional liability insurance market achieved its fifth consecutive year of premium growth in 2025, with 11 of 15 leading insurers reporting increases — but the gains mask a troubling undercurrent, according to the Ames & Gough 2026 PLI Market Survey.

While revenue growth for A&E professional liability reached double-digit levels for 36% of the insurers surveyed, 60% simultaneously experienced higher claim severity, continuing an alarming trend that affects pricing and coverage availability across the industry, the report said.

The revenue growth trajectory reflects multiple drivers. Among insurers reporting premium gains, 91% attributed growth to increased billing and new policies written, while 45% credited both adverse loss experience of their clients and higher premium rates. However, the expansion comes amid economic uncertainty, labor shortages and material cost pressures that are forcing a fundamental market reassessment.

Claim Severity and Defense Cost Dynamics Drive Higher Rates

Professional liability claims are becoming more expensive to defend and resolve, creating pressure throughout the market, [color=rgb(30, 30, 30)]Ames & Gough said. An overwhelming 93% of surveyed insurers identified defense costs as materially impacting claim severity — driven by more aggressive prosecution tactics, expanded use of electronic discovery, expert witness fees, longer resolution times and rising counsel expenses.

Additionally, 60% pointed to increased expense costs, while 20% cited specific project types like multifamily housing and custom residential construction as contributing to deteriorating loss outcomes.

This severity trend carries significant implications for rate-setting, the report said. Despite five years of steady growth, 73% of A&E insurers surveyed plan to implement rate increases in 2026, with 82% targeting modest gains of up to 5%. None plans to reduce rates.

Notably, 82% of insurers cited inflation — including both economic and social inflation — as a key driver of their rate increase decisions, acknowledging that prior pricing has not kept pace with the actual cost environment.

The focus of these increases will be strategic, according to Ames & Gough. While 73% target accounts with adverse loss experience, 56% plan increases related to high-risk projects and 45% will focus on high-risk disciplines. Structural engineering tops insurers’ concerns for both severity (cited by 80%) and frequency (also 80% for architecture), while certain geographic regions — particularly Florida and Texas — face heightened scrutiny due to adverse experience.

New Exposures Reshape Risk Landscape

Beyond traditional claims dynamics, insurers are grappling with emerging exposures in the A&E market that threaten to complicate underwriting further. An estimated 93% of insurers rank social inflation and litigation funding as the most significant market disrupters, followed closely by the widening adoption of AI and technology (80%) and workforce shortages (53%), per the report.

Climate and environmental risks are reshaping geographic underwriting. Ten insurers expressed concerns about hurricane risk in coastal areas, nine worried about flood-prone regions and nine flagged urban infill megacities as increasingly challenging.

Contract risk transfer presents another headwind, the report said. Eighty percent of insurers report that client contractual demands — including requirements for higher liability limits, broader indemnity clauses and mandatory arbitration provisions — are affecting both insurability and rates. In response, insurers are encouraging design firms to push back on onerous language and carefully manage contractual exposure.

On the positive side, 80% of A&E insurers can now provide limits exceeding $5 million, a significant increase from just over half in 2025. Forty percent can offer limits up to $10 million, with some accessing additional capacity from the London market. However, higher limits typically require increased underwriting scrutiny and multiple coverage sources.

Obtain the full report here. &

The R&I Editorial Team can be reached at [email protected].

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