Zweig Group is the leading advisory firm for the AEC industry, providing expert guidance across the entire M&A lifecycle. With deep industry knowledge and decades of experience, we help firms navigate transactions, maximize value, and create long-term growth opportunities for shareholders. Whether you're buying, selling, or planning for the future, our Mergers & Acquisitions Advisory team is here to support you every step of the way.
November 1 – HFA (Bentonville, AR), an architecture and engineering firm, acquired TRIA Architects (Boston, MA), an architecture firm known for its expertise in life sciences and laboratory design. The acquisition expands HFA’s capabilities in advanced research and technical environments. [More information]
November 2 – Apex Companies (Rockville, MD), an environmental consulting and engineering firm, acquired Forsgren Associates (Salt Lake City, UT), a multidisciplinary civil engineering, environmental sciences, and land surveying firm. The acquisition expands Apex’s Western U.S. presence and service depth. [More information]
November 3 – Corgan (Dallas, TX), a global architecture and design firm, acquired Cooper Robertson (New York, NY), an architecture and urban design firm known for cultural and educational buildings, waterfront resiliency work, urban redevelopment, and high-end residential and hospitality projects. The acquisition strengthens Corgan’s urban design and cultural portfolio. [More information]
November 3 – Colliers International, through its subsidiary Colliers Engineering & Design Australia (Adelaide, Australia), acquired Greenhill Engineers (Dulwich, Australia), an urban development firm. The acquisition expands Colliers’ land development and infrastructure capabilities in Australia. [More information]
November 3 – Adler & Allan (Harrogate, UK), an environmental services firm, acquired Thomson Environmental Consultants (Guildford, UK) and Atmos Consulting (Edinburgh, UK), expanding its ecological, environmental permitting, and natural resources capabilities across the UK. [More information]
November 3 – Interstate Engineering (Jamestown, ND), a civil engineering, surveying, and planning firm, acquired TerraSite Design (Rapid City, SD), a civil engineering, landscape architecture, and planning firm. The acquisition expands Interstate Engineering’s multidisciplinary services across the Northern Plains. [More information]
November 3 – Aecon Group (Toronto, Canada), through its subsidiary Aecon Utilities (Toronto, Canada), entered into a definitive share purchase agreement to acquire KPC (Ajax, Canada), a group of companies providing high-voltage testing, commissioning, and energy metering solutions. The acquisition strengthens Aecon’s utility infrastructure capabilities. [More information]
November 4 – CBRE (Dallas, TX), a global commercial real estate services and investment firm, acquired Pearce Services (Paso Robles, CA), a provider of advanced technical services for digital and power infrastructure. The acquisition expands CBRE’s infrastructure and field services capabilities. [More information]
November 4 – DNV (Oslo, Norway) strengthened its power grids expertise in Asia Pacific with the acquisition of Amplitude Consultants (Brisbane, Australia), an engineering advisory firm providing transmission and distribution power grid services. The deal expands DNV’s grid modernization capabilities in the region. [More information]
November 4 – Gould Singleton Architects (Halesowen, UK), an architecture firm serving commercial, community, education, healthcare, residential, and retail markets, received a strategic investment from Bracewell (Stirling, UK). The investment supports Gould Singleton’s growth and design expansion. [More information]
November 5 – Spheros Environmental (Denver, CO), an environmental consulting and geoscience firm, acquired Ironwood Consulting (Redlands, CA), a firm specializing in biological resources, habitat mitigation and monitoring, environmental permitting, and data-driven field services. The acquisition broadens Spheros’s ecological and regulatory expertise. [More information]
November 5 – VCA Consultants (Orange, CA) acquired Green Econome (Los Angeles, CA), a sustainability consulting firm recognized for lifecycle strategies, building performance reporting, and efficiency consulting. The acquisition strengthens VCA’s sustainability and performance services. [More information]
November 5 – Norconsult (Sandvika, Norway), a multidisciplinary engineering and design firm, entered into a definitive agreement to acquire Metier Group (Oslo, Norway), a project management firm. The acquisition enhances Norconsult’s program and project delivery capabilities. [More information]
November 5 – Nippon Koei Energy Solutions (Tokyo, Japan) expanded its presence in Asia through the acquisition of shares in Tractebel Engineering Thailand and PT Tractebel Engineering Indonesia, strengthening its regional energy engineering capabilities. [More information]
November 6 – SLR (Aylesbury, UK), a global environmental and advisory consultancy, acquired Fuse Advisors (Vancouver, Canada), a mining advisory and management consulting firm. The acquisition expands SLR’s mining and minerals expertise in North America. [More information]
November 7 – NMS Consulting (Beverly Hills, CA), in partnership with NMS Capital Group, spun off its Technical Services Consulting division to form Saliba Group (Beverly Hills, CA), a dedicated program and construction management firm. The new entity focuses on project delivery and capital program oversight. [More information]
November 10 – AtkinsRéalis (Montreal, Canada), an engineering services and nuclear firm, acquired C2AE (Lansing, MI), an architecture and engineering firm offering civil, structural, mechanical, and electrical services. The acquisition expands AtkinsRéalis’ U.S. architecture and engineering capacity. [More information]
November 10 – Schaub Projects (St. Louis, MO), an architectural firm specializing in custom residential design, acquired Metheny Architects (Kirkwood, MO), an architecture firm focused on residential work. The acquisition strengthens Schaub Projects’ residential design portfolio. [More information]
November 10 – CIMA+ (Laval, Canada), an infrastructure, transportation, energy, and project management firm, acquired Lakeland Consulting (Oakville, Canada), a commercial management services firm. The acquisition enhances CIMA+’s commercial project advisory capabilities. [More information]
November 10 – Envance (Stockport, UK), an environmental and sustainability consulting firm, joined Celnor Group (London, UK), a group of companies offering testing, inspection, certification, and compliance services. The transaction expands Celnor’s environmental and sustainability expertise. [More information]
November 11 – BW Design Group (St. Louis, MO), an architecture, engineering, and construction firm, acquired Malisko Engineering (St. Louis, MO), a specialist in process controls, automation, industrial networking, cybersecurity, and manufacturing system integration. The acquisition strengthens BW Design Group’s industrial technology capabilities. [More information]
November 12 – SitelogIQ (Minneapolis, MN), an energy services and facility improvement solutions firm, acquired the lighting design backlog and team from Sparkfund (Denver, CO), expanding its lighting and energy efficiency delivery capabilities. [More information]
November 12 – Celnor Group (London, UK) completed its second deal of the week by merging with Primary Water Solutions (Woodford, UK), a firm specializing in water and air hygiene and the management of waterborne pathogen risks. The merger expands Celnor’s building safety and compliance services. [More information]
November 12 – RSK Group (Helsby, UK), an environmental consulting and services firm, acquired the strategy, economic, and policy services arm of RSM UK (London, UK) and merged it with ERS (Newcastle upon Tyne, UK), an economic research consultancy. The combined entity will be rebranded as Fortia Insight, strengthening RSK’s policy and economic advisory capabilities. [More information]
November 12 – Environmental Protection Group (EPG) (Derby, UK), a geoenvironmental engineering firm, acquired Hafren Water (Shrewsbury, UK), an environmental firm specializing in hydrology and hydrogeology. The acquisition enhances EPG’s water sciences and environmental assessment capabilities. [More information]
November 12 – Valsoft (Montreal, Canada), a firm specializing in acquiring and developing vertical market software businesses, acquired bids&tenders (Waterloo, Canada), a digital procurement platform formerly owned by a global design firm. The acquisition enhances Valsoft’s portfolio of public-sector procurement technologies. [More information]
November 12 – SPIE (Cergy, France), a multi-technical services firm focused on energy and communications, signed an agreement to acquire PIK AG (Berlin, Germany), a firm specializing in the integration and maintenance of complex audiovisual systems for conference, education, and performance venues. The acquisition expands SPIE’s building technologies and smart infrastructure capabilities. [More information]
November 14 – Legence (San Jose, CA), an integrated provider of energy efficiency and sustainability solutions for the built environment, entered a definitive agreement to acquire W.E. Bowers (Beltsville, MD), a firm specializing in mechanical and plumbing solutions for complex building systems. The acquisition expands Legence’s technical services for high-performance facilities. [More information]
November 14 – Senus (Roscommon, Ireland), an environmental technology firm, acquired Loamin (London, UK), a geospatial AI company focused on land and soil intelligence. The acquisition enhances Senus’s data-driven environmental solutions. [More information]
November 14 – Mukona Group (Midrand, South Africa), a group of firms offering civil engineering and geotechnical investigation services, acquired Mega Pile (Durban, South Africa), a provider of geotechnical investigations, piling, and lateral support. The acquisition strengthens Mukona Group’s geotechnical and foundation engineering capabilities. [More information]
November 17 – Ardurra (Miami, FL), an engineering and consulting firm, expanded its water-infrastructure capabilities through the acquisition of MKN (San Luis Obispo, CA), a provider of water and wastewater engineering services to municipal and government clients. The acquisition strengthens Ardurra’s presence in the Western U.S. [More information]
November 17 – Pape-Dawson Engineers (San Antonio, TX), a civil engineering, environmental, and surveying firm, acquired Coffman Associates (Overland Park, KS), a firm specializing in airport planning and environmental and noise/land use studies. The acquisition expands Pape-Dawson’s aviation planning capabilities. [More information]
November 17 – Terraphase Engineering (Oakland, CA), an environmental firm, acquired BrightFields (Wilmington, DE), an environmental and remediation services firm. The acquisition strengthens Terraphase’s remediation and environmental consulting offerings. [More information]
November 17 – TPG Capital (San Francisco, CA) signed a definitive agreement to acquire a majority interest in Pike Corporation (Charlotte, NC), a provider of infrastructure engineering and construction solutions for the electrical grid. The investment supports Pike’s continued growth in energy infrastructure delivery. [More information]
November 18 – ZenaTech (Toronto, Canada), a technology firm specializing in AI drones, DaaS, enterprise SaaS, and quantum computing solutions, acquired Rampart Surveys (Woodland Park, CO), a land surveying firm. The acquisition expands ZenaTech’s surveying and geospatial capabilities in the U.S. [More information]
November 18 – Choice International Limited (Mumbai, India), a financial services firm, acquired 100 percent equity in Ayoleeza Consultants (Noida, India), an infrastructure firm with expertise in railways, metro systems, highways, bridges, tunnels, and urban infrastructure. The acquisition strengthens Choice International’s infrastructure advisory presence in India. [More information]
November 19 – Mainline Environmental (Ronkonkoma, NY), an environmental firm, acquired HSE Consulting Services (Cicero, NY), an environmental, health and safety consulting, and laboratory services firm. The acquisition enhances Mainline’s EHS and analytical capabilities. [More information]
November 20 – Lionakis (Sacramento, CA), a multidisciplinary firm specializing in architecture, structural engineering, and interior design, acquired obrARCHITECTURE (San Diego, CA), an architecture and planning firm. The acquisition expands Lionakis’ design presence in Southern California. [More information]
November 20 – Benkendorfer+Associates (Austin, TX), a landscape architecture and site planning firm, acquired Enviro Design (Dallas, TX), a landscape architecture firm. The acquisition supports Benkendorfer+Associates’ growth in the multifamily housing market across Texas. [More information]
November 21 – Willdan Group (Anaheim, CA), a professional, technical, and consulting services firm, signed a definitive agreement to acquire Compass Municipal Advisors (Columbia, SC), a firm that advises public agencies on financing infrastructure rehabilitation and capital development projects. The acquisition strengthens Willdan’s municipal finance and advisory capabilities. [More information]
November 24 – Edwards-Pitman Environmental (Atlanta, GA), an environmental consulting, compliance, and planning firm, acquired TerraXplorations (Tuscaloosa, AL), a firm specializing in cultural resources and environmental consulting services. The acquisition expands Edwards-Pitman’s cultural resources capabilities in the Southeast. [More information]
November 24 – Direct Access Group (Nantwich, UK), a global accessibility consulting firm, sold its U.S. subsidiary Direct Access Consultancy (Boston, MA) to Matrix Design Group (Colorado Springs, CO), an interdisciplinary engineering and design firm. The transaction expands Matrix Design Group’s accessibility consulting capabilities. [More information]
November 24 – Egis (Guyancourt, France), a global design and engineering firm, acquired RockSol Consulting Group (Thornton, CO), a transportation infrastructure firm providing engineering, planning, environmental compliance, design, construction management, inspection, and materials testing services. The acquisition strengthens Egis’ transportation infrastructure platform in North America. [More information]
November 24 – RSK Group (Helsby, UK), an environmental consulting and services firm, acquired Octavius Infrastructure (London, UK), a transportation infrastructure services firm. The acquisition strengthens RSK’s position in the UK transportation sector. [More information]
November 27 – AECOM (Los Angeles, CA) acquired CONSIGLI (Oslo, Norway), an artificial intelligence startup providing automation tools for engineering workflows, including space analysis, MEP load modeling, plant room optimization, and automated reporting. The acquisition enhances AECOM’s digital delivery and engineering automation capabilities. [More information]
November 27 – Lanpro Group (Norwich, UK), a planning, environmental, and design consulting firm, acquired CarneySweeney (Birmingham, UK), a planning services firm focused on residential and commercial development projects. The acquisition expands Lanpro’s planning services footprint across the UK. [More information]