Featured deal in FL; Texas and the South continue to consolidate 

Commentary & Insight

This week, we report nine domestic deals, including new activity in the South—this time in TX, LA, and MS. Registration for the Texas and the South M&A and Business Symposium closes tonight at midnight. Don’t miss your opportunity to network with over 200 AE industry CEOs and investors and gain valuable insights into the future of the industry. Reserve your place and register today. 

Domestic Transactions

9/30/2025 
AE firm Shive-Hattery (Cedar Rapids, IA) (ENR #223) acquired Montgomery Roth (Houston, TX), an architecture and interior design firm with expertise in the gaming and hospitality, and multi-family housing markets. Link to details > 

9/29/2025 
T. Baker Smith (Houma, LA) (ENR #386), an engineering, surveying, and environmental firm, acquired land surveying firms Acadia Land Surveying (Thibodaux, LA) and Cassady-Acadia Land Surveying (Gulfport, MS). Link to details > 

10/1/2025 
Smith Seckman Reid (Nashville, TN) (ENR #185), an engineering, design, and planning firm, acquired George F. Young (GFY) (St. Petersburg, FL), a horizontal infrastructure firm. Link to details > 

10/1/2025 
Catalyst (Sherman Oaks, CA), an environmental firm specializing in water resources, energy, sustainability, and land management, acquired ENPLAN (Redding, CA), a firm with expertise in environmental planning, permitting, and natural resources management. Link to details > 

9/29/2025 
Herbert Rowland & Grubic (Harrisburg, PA), a planning, design, and community infrastructure firm, acquired civil engineering firm Becker Engineering (Lancaster, PA). Link to details > 

9/25/2025 
Integral Consulting (Boulder, CO), an environmental science and engineering firm, acquired Brownfield Science & Technology (Cochranville, PA), a firm that offers remediation, environmental compliance, natural resource management, and data analytics. Link to details > 

9/29/2025 
Warehaus (York, PA), an architecture, engineering, and design firm, acquired Johnston and Associates (York, PA), a civil engineering and land development firm. Link to details > 

Global Transactions

9/29/2025 
ENR’s #42 ranked global design firm, SYSTRA (Paris, France), acquired Ardanuy Ingeniería (Madrid, Spain), a firm specialized in rail systems, metro, and urban transportation. Link to details > 

9/30/2025 
Phenna Group (Nottingham, UK), a family of businesses providing testing, inspection, certification, and compliance (TICC) services, acquired building surveying firm McCarthy Consulting Group (MCG) (Southport, Australia). Link to details > 

9/30/2025 
Core Laboratories (Houston, TX), a firm that provides proprietary and patented reservoir description and production enhancement services in the oil and gas sector, acquired Solintec (Rio de Janeiro, Brazil), a geological services firm. Link to details > 

9/16/2025 
NMi Group (Delft, The Netherlands), a mission-critical advisory, testing, inspection, certification, and calibration (ATICC) services firm, entered into a definitive agreement to acquire Phoenix Testlab (Blomberg, Germany), a testing and certification firm specializing in electromagnetic compatibility (EMC), environmental, radio, battery, and product safety compliance. Link to details >