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.
October 1 – Smith Seckman Reid (SSR) (Nashville, TN), an engineering, design, and planning firm, acquired George F. Young (GFY) (St. Petersburg, FL), a horizontal infrastructure firm specializing in transportation and site development. [More information]
October 1 – 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. [More information]
October 2 – Applied Sciences Consulting (Tampa, FL), an engineering firm specializing in water and stormwater solutions for municipal and regional clients, joined Parsons Corporation (Chantilly, VA), a global leader in technology and infrastructure solutions. [More information]
October 2 – Alpine Intel (Charlotte, NC), a forensic investigation and insurance intelligence firm, acquired HMI (Cary, NC), a technology platform providing data on outdoor property losses. [More information]
October 6 – Erthwrks (Austin, TX), an environmental firm, expanded its platform with a strategic investment in B.enviroSAFE (BAIR) (Carrollton, TX), an air quality consulting firm serving oil and gas, industrial, and petrochemical markets. [More information]
October 6 – Bowman Consulting Group (Reston, VA), an industry leader in infrastructure and environmental services, acquired the assets of Sierra Overhead Analytics (Sonora, CA), a firm specializing in precision mapping and hydrology services. [More information]
October 6 – GMB (Holland, MI), an architecture, engineering, and construction administration firm, acquired Richard L. Johnson Associates (Rockford, IL), an architecture firm serving educational, municipal, and commercial markets. [More information]
October 6 – Arcturis (St. Louis, MO), a design firm, acquired Square Feet Studio (Atlanta, GA), an architecture, interiors, and urban placemaking practice. [More information]
October 7 – WSB (Minneapolis, MN), one of the nation’s leading infrastructure engineering firms, acquired CAS Consulting & Services (Austin, TX), a civil engineering firm with expertise in water, wastewater, and transportation projects. [More information]
October 7 – KGD Architecture (Washington, D.C.), a full-service architecture and design firm, entered into a strategic partnership with Signal Hill Equity Partners (Toronto, Canada). [More information]
October 7 – Sweco (Stockholm, Sweden), a global design and engineering firm, agreed to acquire Fimpec Group (Helsinki, Finland), a project management and engineering firm specializing in renewable energy, hydrogen, and circular economy sectors. [More information]
October 7 – PRI Engineering (Lindsay, Canada), a geotechnical and environmental engineering firm, acquired Ecora (Kelowna, Canada), a multidisciplinary engineering firm providing geotechnical, civil, structural, and forestry services. [More information]
October 7 – SPIE (Cergy, France), a multi-technical services firm focused on energy and communications, signed an agreement to acquire ECOexperts Automation (Lebring, Austria), a systems integrator for tunnel and traffic management. [More information]
October 8 – OAC Services (Seattle, WA), a design and construction performance management firm, joined Consertus (Miami, FL), a global capital program management and advisory platform. [More information]
October 8 – Verdantas (Tampa, FL), an environmental and engineering firm, acquired Colibri Ecological Consulting (Fresno, CA), a firm focused on ecological planning, regulatory permitting, and field surveys. [More information]
October 8 – Consertus (Miami, FL) launched an integrated platform combining digital innovation, consulting, and project delivery services through the acquisition of ten firms including OAC Services, Acumenian, Anchor Enterprises, Cotter Consulting, CPM, Enstoa, KKCS, Saybrook Associates, Waycode, and The Wells Partnership.
October 8 – Environ Energy (New York, NY), an energy management and sustainability solutions firm, acquired Scioto Energy (Columbus, OH), an independent energy brokerage and advisory firm, expanding Environ’s energy procurement and advisory services. [More information]
October 8 – A&E Design (Billings, MT), a multidisciplinary firm offering architecture, interiors, historic preservation, graphic design, branding, environmental design, and landscape architecture services, merged with SMA Architecture + Design (Helena, MT), an architecture and interior design firm. The merger strengthens A&E Design’s design capabilities and expands its reach across Montana. [More information]
October 8 – A. DiCesare Associates (Bridgeport, CT), an engineering firm specializing in highway and railroad bridge inspection and design, as well as underwater inspection services, joined SLR Consulting (Aylesbury, UK), enhancing SLR’s infrastructure and transportation engineering expertise. [More information]
October 9 – CHA Consulting (Albany, NY), a full-service engineering, design, and program management firm, acquired Steger & Bizzell Engineering (Georgetown, TX), a civil engineering firm providing water, wastewater, land development, and surveying services. [More information]
October 9 – RailPros (Irving, TX), a provider of engineering and field services for the rail and transit market, acquired Design Nine (St. Louis, MO), a railroad engineering and site development firm. The deal expands RailPros’ design and construction support capabilities. [More information]
October 9 – ZenaTech (Toronto, Canada), a technology firm specializing in AI drones and quantum computing solutions, acquired Putt Land Surveying (Tucson, AZ), a surveying firm providing boundary, design, and construction staking services. [More information]
October 10 – Cansel Group (Burnaby, Canada), a surveying, engineering, and construction firm, acquired Survey Solutions Group (Loanhead, UK), a geospatial firm specializing in rail, maritime, and infrastructure projects. [More information]
October 10 – Holmes Miller (Glasgow, UK), an architecture and interior design practice, acquired Coltart Earley Architecture (Glasgow, UK), a firm focused on social housing and community development. The acquisition expands Holmes Miller’s community architecture portfolio. [More information]
October 13 – Bowman Consulting Group (Reston, VA) acquired Lazen Power Engineering (Orlando, FL), a power engineering firm specializing in high-voltage transmission line design and construction oversight. The acquisition expands Bowman’s power delivery capabilities across the Southeast. [More information]
October 13 – Ecology and Heritage Partners (Travancore, Australia), an environmental and heritage consulting firm, joined FYFE (Adelaide, Australia), strengthening FYFE’s environmental and heritage service offerings. [More information]
October 14 – Trinity Consultants (Dallas, TX) acquired Benchmark Risk Group (Chicago, IL), a scientific consulting firm addressing complex exposure risks in workplaces, communities, and consumer settings. The acquisition strengthens Trinity’s scientific and risk assessment portfolio. [More information]
October 15 – Hord Coplan Macht (Baltimore, MD), an architecture, landscape architecture, interior design, and planning firm, acquired Path21 Architecture & Planning (Denver, CO), a design firm specializing in healthcare and commercial projects. The acquisition expands HCM’s footprint in the Rocky Mountain region. [More information]
October 15 – CivilOne (Las Vegas, NV), a civil engineering firm, announced the definitive purchase agreement of Baughman & Turner (Las Vegas, NV), a civil engineering and land surveying firm. The deal enhances CivilOne’s technical depth and project delivery capacity in Nevada. [More information]
October 15 – BB7 (Kent, UK), a fire engineering, façade engineering, and building safety advisory firm, joined CERTANIA (Munich, Germany), a group specializing in testing, inspection, and certification (TIC) and compliance services. The partnership expands CERTANIA’s built environment safety expertise. [More information]
October 15 – Windward Environmental (Seattle, WA), an environmental firm providing scientific analysis and regulatory support, joined Barr Engineering (Minneapolis, MN), strengthening Barr’s environmental science and remediation expertise. [More information]
October 15 – TAI (Owings Mills, MD), an engineering and construction services firm, formed TAI Construction through a merger with WBCM Construction (Baltimore, MD), expanding its general contracting and construction management capabilities. [More information]
October 15 – Saunders International Limited (Rhodes, Australia), a multidisciplinary engineering, construction, and industrial asset services firm, acquired Aqua Metro (Keysborough, Australia), a company offering design and project delivery services in the water industry. The acquisition strengthens Saunders’ water infrastructure capabilities. [More information]
October 15 – NGE Corporate (Tarascon, France), a construction and civil engineering group, announced the acquisition of Saceem (Montevideo, Uruguay), expanding its operations into South America. [More information]
October 15 – SLR Consulting (Aylesbury, UK) acquired Forte Dynamics and Forte Analytical (Fort Collins, CO), mining engineering and metallurgical testing specialists. The acquisition bolsters SLR’s global mining and minerals practice. [More information]
October 16 – Certerra (Rancho Cucamonga, CA), a testing, inspection, and certification services firm focused on materials engineering and earth sciences, acquired Farabaugh Engineering and Testing (McKeesport, PA), expanding its materials testing and auditing expertise. [More information]
October 16 – Sweco (Stockholm, Sweden) signed an agreement to acquire assar architects (Brussels, Belgium), an architectural practice specializing in commercial, healthcare, education, and urban planning projects. The acquisition strengthens Sweco’s architectural footprint in Europe. [More information]
October 17 – Seneca Group (Seattle, WA), a real estate advisory and development management firm, merged with Cumming Group (New York, NY), enhancing Cumming’s program and project management capabilities across North America. [More information]
October 17 – AKS Engineering & Forestry (Tualatin, OR), a civil engineering, water resources, and land use planning firm, acquired Lancaster Mobley (Portland, OR), a traffic engineering and transportation planning firm. The deal broadens AKS’s transportation services. [More information]
October 20 – WSB (Minneapolis, MN), an infrastructure engineering consulting firm, acquired Agbara Engineering (West Palm Beach, FL), a power delivery engineering firm, expanding its energy sector capabilities. [More information]
October 20 – STV (New York, NY), an architecture and engineering firm, acquired Cypress Construction Management (Roseville, CA), a program, project, and construction management firm, enhancing STV’s West Coast presence. [More information]
October 20 – Pape-Dawson Engineers (San Antonio, TX) acquired Innerlight Engineering (Miramar Beach, FL), a civil engineering, surveying, and land planning firm, expanding its footprint in the Southeast. [More information]
October 20 – Oteis (Bois-Colombes, France), a consulting and engineering group, acquired GreenFlex (Paris, France), a sustainability and environmental solutions firm, expanding its environmental consulting capabilities. [More information]
October 21 – RVi Planning + Landscape Architecture (Austin, TX) acquired Talson Design (Fort Worth, TX), a landscape architecture and urban planning firm, enhancing RVi’s presence in Texas and the South-Central region. [More information]
October 21 – Trinity Consultants (Dallas, TX) acquired GeoSystems Analysis (Tucson, AZ), a hydrology and natural resources consultancy, expanding its environmental and water resource services. [More information]
October 21 – SurveyPlus (Dural, Australia), a land surveying firm, merged with Orion Group (Sydney, Australia), an engineering firm serving urban, industrial, and infrastructure markets. The merger creates an integrated platform for surveying and engineering services. [More information]
October 21 – Multiconsult ASA (Oslo, Norway) entered into an agreement to acquire ViaNova (Sandvika, Norway), a consulting firm specializing in transportation and mobility engineering. The acquisition enhances Multiconsult’s infrastructure portfolio. [More information]