J.S. Held Acquires Clark Seif Clark

J.S. Held Acquires GHL Consultants Ltd.

August 12, 2025

Engineering Services

Global consulting firm J.S. Held has acquired Canadian fire engineering and building code consulting firm GHL Consultants, Ltd., expanding J.S. Held's capabilities in building code compliance, fire engineering, and forensic services in Western Canada. The acquisition gives GHL clients access to J.S. Held's global team of more than 1,500 experts and strengthens services to developers, architects, government agencies, insurers, and institutions.

J.S. Held Acquires Environmental Consultants, LLC

September 12, 2023

Environmental Services

Global consulting firm J.S. Held has acquired Environmental Consultants, LLC, a Greater St. Louis–area environmental services firm founded in 2003. The acquisition expands J.S. Held’s Environmental, Health & Safety (EHS) practice by adding industrial hygiene, environmental testing, inspection and remediation support and strengthens its Midwest capabilities.

J.S. Held Acquires Perry Associates LLC

September 9, 2020

Construction

Global consulting firm J.S. Held has acquired Perry Associates LLC, a Greater Boston–area construction consulting firm, to expand its Construction Advisory Services practice in the Northeastern United States. The deal adds Perry's expertise in commercial management, project scheduling, and construction claims to J.S. Held's broader technical, scientific, financial, and strategic consulting platform.

J.S. Held Acquires Brennan Environmental, Inc.

February 26, 2020

Environmental Services

Global consulting firm J.S. Held has acquired Brennan Environmental, Inc. (BEI), a New Jersey–based environmental consulting firm, to expand its Environmental, Health & Safety practice. The acquisition adds BEI’s remediation, due diligence, regulatory compliance, and geologic/hydrogeologic capabilities and strengthens J.S. Held’s presence in the Northeastern United States.

J.S. Held Acquires J.S. Dyer & Associates

January 7, 2020

Engineering Services

Global consulting firm J.S. Held acquired Irvine-based structural and forensic engineering firm J.S. Dyer & Associates to expand its forensic engineering capabilities and presence in the Western United States. The deal integrates JSDA’s seismic- and forensic-engineering expertise into J.S. Held’s broader technical consulting platform.

Kelso & Company Acquires J.S. Held

July 1, 2019

Professional Services

Kelso & Company (via Kelso Fund X) has acquired a majority investment in J.S. Held, a specialty consulting firm focused on insurance claims management and forensic consulting. The transaction transfers ownership from Lovell Minnick Partners to Kelso and positions J.S. Held to pursue further organic and inorganic growth and capability expansion.