Cool California Construction Expert Witness Directory

California’s Retention Reform on Private Construction Projects

February 17, 2026 — Michael McKeeman - The Construction Seyt
Retention has long been a contentious issue in California construction. Traditionally, owners withheld retention of 10% from each progress payment until completion, arguing it was necessary to ensure performance, quality and timely delivery. Contractors and subcontractors, however, often struggled with cash flow, payroll, and material costs while waiting months—sometimes even years—for withheld retention. Recognizing the financial challenges contractors and subcontractors face, the California legislature passed Senate Bill 61 (“SB 61”), now codified under California Civil Code Section 8811 and effective January 1, 2026, limiting retention to 5% on private works of improvement, aligning with the public works standard in place since 2012. The law’s intent is clear—ease financial strain on contractors and subcontractors while still providing owners with security (albeit reduced) with respect to project completion. Read the full story...
Reprinted courtesy of Michael McKeeman, Seyfarth
Mr. McKeeman may be contacted at

Contractor Entitled to Defense Under Subcontractor’s Policy

March 10, 2026 — Tred R. Eyerly - Insurance Law Hawaii
The appellate court affirmed the trial court’s grant of summary judgment to the contractor’s insurer finding that the sumcontractor’s insurer had a duty to defend the contractor. Navigators Specialty Ins. Co. v. TBR Construction, LLC, et al., 2025 Ill. App. Unpub. LEXIS 2177 (Ill. Ct. App. Dec. 3, 2025). Greenscape Homes, LLC was the general contractor for a residential development. Greenscape hired TBR Construction, LLC as a carpentry-framing subcontractor pursuant to a “Trade Contractor Agreement.” The Trade Agreement required TBR to name Greenscape as an additional insured. TBR was insured by Utica. Greenscape was insured by Navigators. Read the full story...
Reprinted courtesy of Tred R. Eyerly, Damon Key Leong Kupchak Hastert
Mr. Eyerly may be contacted at te@hawaiilawyer.com

'Drywall Isn't Light': Peter Lupo on Safety Management at Standard Drywall

May 26, 2026 — Elaine Silver - Engineering News-Record
Peter Lupo has been safety director since 2019 at San Diego-based Standard Drywall Inc., a major wall and ceiling contractor. He draws on over two decades of safety experience across a wide range of commercial construction work, having previously served as safety director for general contractor T.B. Penick & Sons. He has also previously operated Peter Lupo Consulting, where he reviewed legal cases and provided expert testimony, and blogged on safety for ENR.com. Lupo recently spoke to ENR Correspondent Elaine Silver about the weight of drywall, heat hazard control, bilingual crews and how he supports safety creativity and learning on the Standard Drywall staff. The conversation has been edited. Read the full story...
Reprinted courtesy of Elaine Silver, Engineering News-Record
ENR may be contacted at enr@enr.com

Ninth Circuit Holds That Policies Covering Environmental Claims Do Not Have Aggregate Limits

May 12, 2026 — Lorelie S. Masters & Joseph T. Niczky - Hunton Insurance Recovery Blog
In the case of County of San Bernardino v. Insurance Company of the State of Pennsylvania, the Ninth Circuit recently addressed the issue of whether general liability policies issued in the 1960s and 1970s included aggregate limits for claims arising under the premises-operations coverage in CGL policies. The difference between the policyholder’s interpretation of the policies’ limits clauses and the insurer’s interpretation was worth hundreds of millions of dollars in exposure for the insurer. The Court closely examined the policy language and extrinsic evidence from both the insurance industry’s drafting history and the parties before concluding that the policies were ambiguous. The Court construed that ambiguity in favor of the policyholder and ruled that aggregate limits did not apply to the claims at issue. The Court’s decision underscores the importance of carefully examining a policy’s limits, especially for older policies written before 1986 when the insurance industry revised the standard-form CGL policy to state the aggregate limits apply not only to products liability claims but to premises-operations claims as well. Decades of insurance industry drafting history confirms, as the policyholder’s submissions in this case indicate, that the industry well understood that operations claims like the environmental waste-disposal claims at issue here typically were not subject to aggregate limits. Reprinted courtesy of Lorelie S. Masters, Hunton Andrews Kurth LLP and Joseph T. Niczky, Hunton Andrews Kurth LLP Ms. Masters may be contacted at lmasters@hunton.com Mr. Niczky may be contacted at jniczky@hunton.com Read the full story...

Bad Faith Claim Survives Summary Judgment

June 08, 2026 — Tred R. Eyerly - Insurance Law Hawaii
The court denied the insurer’s motion for partial summary judgment on the insured’s bad faith claim, but granted the motion on the insured’s claim for punitive damages. Serbian Orthodox Church v. Brotherhood Mut. Ins. Co., 2026 U.S. Dist. LEXIS 58234 (S.D. Cal. March 19, 2026). On February 1, 2023, the Church filed a claim for water damage with Brotherhood Mutual Insurance Company (BMIC). The claim was based on rain and wind that caused extensive water intrusion into the Sanctuary, damaging its plaster walls and ceilings and fresco paintings. The claim was assigned to Patrick Hurley. Hurley sent a letter discussing potential bars to coverage and requesting further information and documents from the Church. Read the full story...
Reprinted courtesy of Tred R. Eyerly, Damon Key Leong Kupchak Hastert
Mr. Eyerly may be contacted at te@hawaiilawyer.com

Endra Rethinks MEP Design with AI

July 06, 2026 — Aarni Heiskanen - AEC Business
Niklas Lindgren, co-founder and CEO of Endra, joins the AEC Business Podcast to discuss why his Stockholm-based startup is rebuilding MEP design from the ground up with AI. Endra recently raised $50 million in Series A funding and counts some of the world’s largest engineering consultancies as customers. Niklas explains why Revit’s underlying data model is too coarse to support deep automation, and why Endra built its own granular 3D data model instead of working as a plugin. He describes Endra’s “spatial AI” approach to routing conduit and ductwork without clashes, and how the platform models entire electrical systems, from receptacle to transformer, inside a single source of truth. Read the full story...
Reprinted courtesy of Aarni Heiskanen, AEC Business
Mr. Heiskanen may be contacted at aec-business@aepartners.fi

The AI Knows Too Much: When Employees Feed Trade Secrets into Generative AI Tools

April 14, 2026 — Kazim A. Naqvi & John V. Mysliwiec - Sheppard
Every time an employee pastes proprietary source code, a customer list, or a confidential business strategy into ChatGPT, Claude, or Google Gemini, they may be quietly dismantling the legal protections that make those secrets worth protecting. Courts and regulators are only beginning to grapple with this problem, and right now, the burden of preventing it falls squarely on employers. The Legal Stakes Under the federal Defend Trade Secrets Act (“DTSA”) and the Uniform Trade Secrets Act (“UTSA”) as adopted across most states, a trade secret plaintiff must show that the information at issue was subject to reasonable measures to maintain its secrecy. Courts have historically credited measures like confidentiality agreements, physical access controls, and employee training—but those safeguards were designed for a world of thumb drives and disgruntled employees. They were not built for a world where a well-meaning engineer can, in seconds, transmit an entire corpus of proprietary data to a third-party AI platform operating under terms of service that may permit the provider to use inputs for model training. Reprinted courtesy of Kazim A. Naqvi, Sheppard and John V. Mysliwiec, Sheppard Mr. Naqvi may be contacted at knaqvi@sheppard.com Mr. Mysliwiec may be contacted at jmysliwiec@sheppard.com Read the full story...

Insurance Coverage and Bad Faith Practice Earns Prestigious Band One Ranking in the Chambers USA 2026 Guide

June 22, 2026 — White and Williams LLP
White and Williams LLP's Insurance Coverage and Bad Faith Practice Group is pleased to share that it has received a Band One ranking in the Chambers USA 2026 Guide for Insurance, Pennsylvania. Additionally, Patricia B. Santelle, Chair Emeritus, Randy Maniloff, Partner, and Robert Walsh, Partner have all been individually ranked on the Chambers USA 2026 Guide in Insurance in Pennsylvania. The Insurance Coverage and Bad Faith Practice's consistent focus on their clients and handling of complex claims were just two of the attributes contributing to their elite Band One ranking, after 11 years on the Chambers USA list. When asked about their experience working with White and Williams’ Pennsylvania Insurance Practice, one client stated, “What distinguishes White and Williams is the high level of service and accountability. The team is responsive, organized and reliable, which allows our internal teams to move quickly and make informed decisions with confidence.” Read the full story...
Reprinted courtesy of White and Williams LLP

COOL CALIFORNIA CONSTRUCTION EXPERT WITNESS DIRECTORY AND CAPABILITIES