September 25, 2025 – Boulder, CO – Integral Consulting Inc., a leader in environmental science and engineering consulting, acquires Brownfield Science & Technology, Inc. (BSTI), based in Cochranville, Pennsylvania. The acquisition strengthens Integral’s Mid‑Atlantic presence and builds on a history of collaboration between the two firms. BSTI brings expertise in remediation, environmental compliance, natural resource management, and data analytics. PSMJ initiated this transaction and provided transaction advisory services to BSTI.

September 22, 2025 – Houston, TX – LJA Engineering, Inc., a national multi-discipline engineering, planning, surveying, and environmental services firm, announces the merger with C E Group, Inc. (CEG), a respected land development and civil engineering practice headquartered in Raleigh, North Carolina. Nearly 40 CEG employees will join and operate under the LJA brand. Principals Mark Ashness, Joe Faulkner, and Mitch Craig will continue leading the team through integration. The merger expands LJA’s presence in North Carolina and strengthens its regional land development capabilities.

September 17, 2025 – Athens, TX – REI Utility Services, a leading provider of power systems engineering and field services to electric utilities, acquires Torlan Engineering, a Houston-based power systems engineering firm. Torlan brings expertise in power systems protection, protective relaying and studies, protection and control system design, automation and SCADA engineering, testing and commissioning, and substation design. The acquisition enhances REI’s technical depth and strengthens its presence in key Texas and Oklahoma utility markets.

September 16, 2025 – Irvine, CA – Salas O’Brien, a national engineering, architecture, and facility planning firm headquartered in Irvine, California, welcomes rCon Engineers, a Woodbridge, Ontario–based industrial and heavy-industry engineering firm. The merger strengthens Salas O’Brien’s presence in the heavy industry sector—including cement, lime, bulk materials, and industrial plants—by adding rCon’s expertise in civil/structural design, feasibility studies, general arrangement layouts, inspections, and remedial engineering for damaged structures.

September 15, 2025 – Miami, FL – Ardurra Group, Inc., a national engineering and design firm, acquires Perteet Inc., a Washington-based infrastructure consulting firm known for its award-winning transportation expertise and long-standing public agency relationships. Perteet, founded in 1988 and with approximately 125 professionals across six offices in Washington, brings strengths in transportation design, utility/site engineering, environmental services, transit design, and construction management. The acquisition enhances Ardurra’s Pacific Northwest presence and transportation capabilities, expanding the firm’s national footprint to roughly 2,000 employees across 95+ offices.

September 15, 2025 – Marietta, GA – Pape-Dawson, a civil engineering and surveying firm, acquires Gaskins + LeCraw, a Georgia-based civil engineering and surveying firm with 176 employees across five offices in Georgia and one in Alabama. Gaskins + LeCraw provides civil engineering, surveying, permitting, landscape architecture, and planning services for municipal, educational, residential, commercial, and industrial clients. This acquisition strengthens Pape-Dawson’s footprint in Georgia and Alabama and adds deep local expertise to its capabilities.

September 10, 2025 – St. Louis, MO – CannonDesign, a global architecture, engineering, and consulting firm, announces the integration of Christner Architects, a 60‑plus year St. Louis–based architecture and design firm. The merger strengthens CannonDesign’s presence in St. Louis and enhances its capabilities across healthcare, education, science, commercial, and cultural design. All managing principals and staff of Christner are staying with the combined firm, ensuring continuity and local leadership.

For a full list of PSMJ’s transactions please click here.