The Ames & Gough survey landed in March. Seventy-three percent of architects and engineers professional liability carriers plan rate increases in 2026, with the largest concentration in the single-digit range. Eighty-five percent cite claim severity as the dominant 2026 driver. Eighty percent can write limits above five million. Forty percent can offer up to ten million. The market read at the headline level is stable with competitive pressure. The market read inside the underwriting submission is something else.
The 2026 A&E professional liability market is a two-tier market that the buyer is rarely told they are inside.
Tier one and tier two
WTW's 2026 Insurance Marketplace Realities described the structure with rare clarity. Tier one is the favorable account — low exposure profile, strong loss history, defensible project mix, documented QA/QC, contained AI footprint. Tier two is the challenging account — higher exposure services, design-build participation, adverse loss experience, large structural or transportation projects, or unmanaged AI tool adoption. The same survey describing single-digit rate increases is describing the favorable tier. The challenging tier is double-digit — with several recent renewals coming in north of twenty percent.
The AI exclusion conversation is the new tier boundary. ISO's three new generative AI exclusion endorsements — CG 40 47, CG 40 48, and CG 35 08 — took effect January 1, 2026 on the commercial general liability form. Multiple A&E specialty markets have filed their own absolute AI exclusions on the professional liability side. The firm that runs documented human-in-the-loop review of AI-assisted design work is the firm staying inside the favorable tier.
The 2026 underwriting submission asks not just what type of projects the firm does, but what percentage of revenue comes from design-build engagements, what percentage involves delegated structural or MEP design, what percentage is performed for public-sector clients with statutory indemnity, and what percentage involves AI-generated deliverables.
Pre-claim contract review services from the major A&E carriers — Tokio Marine HCC, Liberty Mutual, Berkley Design Professional, Victor — are no longer optional ancillary benefits. They are documented evidence that the underwriter expects to see referenced in the next renewal.
Pricing reflects the next five years, not the last five
Claim severity has been climbing for six consecutive years. Social inflation, longer claim tails, larger settlements, increased plaintiff sophistication, and emerging risk categories from AI and climate are reshaping what counts as a defensible engineering or design decision in court. The pricing in 2026 reflects the carriers' read on the next five years, not the last five.
PFTN's A&E approach treats the submission the way the underwriter treats it. Strategic Discovery starts with the project mix, the AI footprint, the QA/QC posture, and the contract review log. Risk Assessment quantifies the tier boundary the firm is actually sitting on. Solution Design pairs the professional liability tower with cyber, GL, and umbrella. Ongoing Optimization keeps the file current as the firm's project mix evolves.
The market read at the headline is stable. The market read inside the submission is two-tier. The firms that figured that out in 2025 are walking into 2026 renewals with rates the other tier cannot see.
— Ryan Mefford, President & Risk Advisor