September 1 – RESPEC (Rapid City, SD), an innovative geoscience, engineering, and technology firm, acquired Albertson Engineering (Rapid City, SD), a structural firm experienced in civic buildings, public art, commercial spaces, and industrial facilities. [More information]

September 1 – Intertek (London, UK), an assurance, testing, inspection, and certification services firm, acquired Envirolab Services (Sydney, Australia), an environmental testing and analysis firm serving government, industrial, infrastructure, energy, and construction sectors. [More information]

September 1 – Rejlers (Stockholm, Sweden) acquired 51 percent of Spring Advisor (Helsinki, Finland), strengthening its capabilities in strategic advisory services. [More information]

September 2 – Ardurra (Miami, FL) acquired J.R. Wauford & Company (Nashville, TN), a nearly 70-year-old wastewater engineering firm, expanding its regional presence and enhancing its infrastructure solutions expertise. [More Information]

September 2 – SI Solutions (Huntersville, NC), a platform of companies serving utility and industrial sectors, acquired Integrity Specialists (Annandale, MN), a firm specializing in non-destructive examination and inspection for the natural gas pipeline industry. [More information]

September 2 – GZA GeoEnvironmental (Norwood, MA), a multi-disciplinary firm providing geotechnical, environmental, ecological, water, and construction management services, purchased the assets of Siefert Associates (Watertown, CT), a construction engineering firm recognized for large-scale project delivery. [More Information]

September 3 – Powerhaus Consulting (Toronto, Canada), a renewable energy engineering firm, joined SLR (Aylesbury, UK), an environmental and advisory practice. [More information]

September 3 – dk Engineering (Walnut Creek, CA), a multidisciplinary consulting firm, joined Qualus (Orlando, FL), a leading provider of power infrastructure solutions. [More Information]

September 3 – Environ Energy (New York, NY), a sustainable energy solutions firm, acquired CSD Energy Advisors (Houston, TX), an energy management and advisory firm specializing in procurement, demand response, and storage. [More information]

September 3 – Pape-Dawson Engineers (San Antonio, TX) expanded in Florida with the acquisition of Bonnett Design Group (Maitland, FL), a firm specializing in landscape architecture and planning. [More information]

September 3 – Foresight Group (London, UK), a private equity manager, invested in Graham + Sibbald (Dundee, UK), a chartered surveying and property consulting firm. [More information]

September 3 – Following the investment by Foresight Group, Graham + Sibbald (Dundee, UK) acquired Aitchison Raffety (London, UK), a property consulting firm. [More information]

September 3 – BPA (Montreal, Canada) entered into a strategic merger with M+B Electrical Consulting Engineers (Mulvey and Banani) (Calgary, Canada), a full-service electrical engineering firm. [More information]

September 4 – Abramson Architects (Los Angeles, CA), an architecture firm with expertise across multiple sectors, joined Perkins&Will (Chicago, IL), an interdisciplinary architecture and design practice. [More information]

September 4 – Phenna Group (Nottingham, UK), a family of businesses providing testing, inspection, certification, and compliance services, acquired Prensa (Hawthorn, Australia), a firm focused on health, safety, and environmental risk management. [More information]

September 4 – I.CO.P. S.p.A. Società Benefit (Basiliano, Italy), a civil engineering firm, acquired 61.89 percent of the share capital of Palingeo (Carpenedolo, Italy), a geotechnical firm. [More information]

September 4 – Middleton Group (Melbourne, Australia), an engineering firm serving renewables, data centers, transportation, and utilities, joined FYFE (Adelaide, Australia), an engineering, environment, planning, and surveying firm. [More information]

September 5 – ANS Geo (South Plainfield, NJ), a geotechnical engineering firm, and FastGrid (The Woodlands, TX), a renewable energy engineering firm, combined under the ANS brand (Columbus, OH), creating a multi-disciplinary engineering firm. [More information]

September 8 – Hecht Burdeshaw Architects (Columbus, GA) joined McMillan Pazdan Smith (Spartanburg, SC), an architecture and advisory firm. [More information]

September 8 – Signal Hill Equity Partners (Toronto, Canada) expanded its AEC platform through a partnership with Kluber Architects + Engineers (Aurora, IL), a firm serving government, education, healthcare, and private clients. [More information]

September 8 – Eolas Environmental (Redding, CT), an environmental firm, joined Terraphase Engineering (Oakland, CA), an environmental and engineering firm. [More information]

September 8 – SOCOTEC (Saint-Quentin-en-Yvelines, France) strengthened its infrastructure services with the acquisition of Lloyds Datum Group (Moira, UK), a firm providing foundation pile testing, asset integrity, and stability monitoring. [More information]

September 8 – In a pair of deals, SOCOTEC (Saint-Quentin-en-Yvelines, France) acquired Greenwich (Medolago, Italy), an environmental sustainability firm, and Prisma (Campania, Italy), a marine environmental firm. [More information]

September 9 – CHA (Albany, NY), a full-service engineering, design, and project management firm, acquired Midwestern Engineers (Loogootee, IN), which provides water, wastewater, stormwater, and surveying solutions. [More information]

September 9 – Kuo Diedrich Chi Architects (Atlanta, GA), a firm specializing in lifestyle-focused design for clubs and resorts, joined ClubWorks (West Palm Beach, FL), a network of architecture and design companies. [More information]

September 10 – Christner Architects (St. Louis, MO) joined CannonDesign (New York, NY), a global design practice. [More information]

September 10 – Englobe (Quebec City, Canada), an engineering platform, acquired LRL Associates (Ottawa, Canada), an engineering firm focused on buildings and land development. [More information]

September 10 – PAI Partners (Paris, France) entered an agreement to acquire Orion Environment (Veggiano, Italy), an environmental monitoring services firm, from Xenon Private Equity (Luxembourg, Luxembourg). [More information]

September 10 – Envirosite (Conklin, NY), a provider of environmental data for site assessments and risk evaluations, acquired Land Insight (Sydney, Australia), a firm specializing in environmental risk data services. [More information]

September 11 – Aperture (Arlington, TX), a portfolio of forensic services companies, acquired Bryant Consultants Operating (Carrollton, TX), a geotechnical engineering and forensic consulting firm. [More information]

September 11 – Salas O’Brien (Irvine, CA) expanded its MEP engineering expertise with the addition of AME Consulting Engineers (Charlotte, NC). [More information]

September 11 – ZenaTech (Toronto, Canada), a technology firm specializing in AI drones, Drone as a Service, and quantum computing solutions, acquired Lescure Engineers (Santa Rosa, CA), a civil engineering and land surveying firm. [More information]

September 12 – TowerBrook Capital Partners (London, UK) made an investment in GMC Group (Dublin, Ireland), a multi-disciplinary utility provider serving critical infrastructure projects. [More information]

September 15 – Perteet (Everett, WA), an infrastructure consulting firm known for its transportation expertise and public agency partnerships, joined Ardurra (Miami, FL), a national engineering and consulting leader. [More information]

September 15 – Adagia Partners (Paris, France) acquired AGN Niederberghaus & Partner (Ibbenbüren, Germany), a planning and project management firm, from Armira Beteiligungen GmbH & Co. KG (Munich, Germany). [More information]

September 15 – Mears Group (Gloucester, UK), a facilities services firm, acquired Pennington Choices (Warrington, UK), a property surveying firm. [More information]

September 15 – The Designers Group (Brooklyn, NY), a design firm specializing in hospitality, commercial, multi-family, healthcare, and senior living projects, acquired Interior Images (Los Angeles, CA), a design firm focused on healthcare and senior living environments. [More information]

September 15 – Pape-Dawson Engineers (San Antonio, TX), a civil engineering, environmental, and surveying firm, acquired Gaskins + LeCraw (Marietta, GA), a civil engineering and surveying firm. [More information]

September 16 – Salas O’Brien (Irvine, CA) merged with rCon Engineers (Woodbridge, Canada), a firm providing civil and structural design, feasibility studies, and remedial design services for industrial clients. [More information]

September 16 – Egis (Guyancourt, France), a global design and consulting firm, acquired Ecometrix (Mississauga, Canada), an environmental firm offering permitting and compliance services to the mining, nuclear, government, and private sectors. [More information]

September 16 – Azzurra Capital (Luxembourg, Luxembourg) entered into a partnership with Proger (Rome, Italy), an international design and engineering firm. [More information]

September 16 – NMi Group (Delft, The Netherlands), a mission-critical testing and certification firm, entered into a definitive agreement to acquire Phoenix Testlab (Blomberg, Germany), a company specializing in electromagnetic compatibility (EMC) and product safety compliance testing. [More information]

September 17 – 360 Engineering & Environmental Consulting (Calgary, Canada), an environmental firm, acquired Outcome Consultants (Ottawa, Canada), a provider of mining construction, engineering, and environmental consulting services. [More information]

September 17 – REI Utility Services (Athens, TX), a provider of power systems engineering and field services, acquired Torlan Engineering (Houston, TX), a power systems engineering firm. [More information]

September 18 – Architecture Plus Information (A+I) (New York, NY), a workplace strategy and design firm with expertise in financial, tech, and commercial real estate sectors, joined Perkins&Will (Chicago, IL), an interdisciplinary architecture and design firm. [More information]

September 18 – Enviros Group (Hordle, UK), a geosciences and environmental services firm specializing in marine environments, acquired Hurricane Geo Inspection Survey (HGIS) (Kuala Lumpur, Malaysia), an offshore surveying firm. [More information]

September 18 – Lochmueller Group (Evansville, IN), a surveying, planning, engineering, and environmental firm, acquired Archaeological Research Center (ARC) (St. Louis, MO), a firm experienced in cultural resource management and historic and prehistoric archaeology. [More information]

September 22 – CE Group (Raleigh, NC), a multidisciplinary land development firm, joined employee-owned LJA Engineering (Houston, TX), strengthening LJA’s land development capabilities. [More information]

September 22 – RSK Group (Helsby, UK), an environmental consulting and services firm, acquired Capire (Collingwood, Australia), a community engagement consulting firm with expertise in energy, infrastructure, and environmental sectors. [More information]

September 23 – Inframark (Horsham, PA), a technology-driven water and wastewater services firm, acquired WHECO Controls (Fort Worth, TX), strengthening its automation and intelligence capabilities. [More information]

September 23 – Goodwyn Mills Cawood (GMC) (Montgomery, AL), a multidisciplined architecture and engineering firm, acquired Cassetty Architecture (Hendersonville, TN), a firm specializing in healthcare architecture. [More information]

September 23 – Agile Utility Partners (Anaheim, CA), a utility services firm, acquired the assets of GroundHawk (Athens, GA), a subsurface utility inspection and mapping services provider. [More information]

September 23 – E Source (Boulder, CO), a utility-focused customer and technology solutions firm, acquired CF Power (Wilmington, DE), a power systems engineering firm experienced in grid modernization. [More information]

September 23 – ZenaTech (Toronto, Canada), a technology firm specializing in AI drones and quantum computing solutions, acquired A&J Land Surveyor (Jacksonville, FL), a land surveying and engineering firm. [More information]

September 23 – SitelogIQ (Minneapolis, MN), an energy services and facility improvement solutions firm, acquired Compass Energy Solutions (Midlothian, VA), expanding its energy infrastructure development and asset management services. [More information]

September 23 – TMC Group (Eindhoven, The Netherlands), a high-tech consulting firm, acquired Adventec Consulting (Lille, France), which provides technical support and engineering to railway operators. [More information]

September 24 – BNP Associates (Fairfield, CT), a transportation and logistics design and engineering firm, acquired Studdiford Technical Solutions (Alexandria, VA), a consulting firm focused on airport systems and transportation security. [More information]

September 24 – Jensen Hughes (Columbia, MD), a safety, security, and risk-based engineering firm, acquired the Canadian operations of PLC Fire Safety Engineering (Mississauga, Canada), a fire and life safety engineering firm. [More information]

September 25 – Integral Consulting (Boulder, CO), an environmental science and engineering firm, acquired Brownfield Science & Technology (Cochranville, PA), expanding its remediation and compliance capabilities. [More information]

September 25 – Applus+ (Madrid, Spain), a global testing, inspection, and certification firm, agreed to acquire APEM Group (Stockport, UK), an environmental and geospatial services firm, to launch a new global environmental services division. [More information]

September 26 – RVi Planning + Landscape Architecture (Austin, TX), a design firm and strategic partner of Atwell (Southfield, MI), acquired Hitchcock Design Group (Naperville, IL), a landscape architecture and urban design firm. [More information]

September 29 – T. Baker Smith (Houma, LA), an engineering, surveying, and environmental firm, acquired Acadia Land Surveying (Thibodaux, LA) and Cassady-Acadia Land Surveying (Gulfport, MS), expanding its surveying operations along the Gulf Coast. [More information]

September 29 – Herbert Rowland & Grubic (Harrisburg, PA), a planning, design, and infrastructure firm, acquired Becker Engineering (Lancaster, PA), a civil engineering firm. [More information]

September 29 – Warehaus (York, PA), an architecture, engineering, and design firm, acquired Johnston and Associates (York, PA), a civil engineering and land development firm. [More information]

September 29 – SYSTRA (Paris, France), a global transportation engineering firm, acquired Ardanuy Ingeniería (Madrid, Spain), a firm specializing in rail systems and urban transport. [More information]

September 30 – Shive-Hattery (Cedar Rapids, IA), an architecture and engineering firm, acquired Montgomery Roth (Houston, TX), an architecture and interior design firm with expertise in hospitality and multifamily housing. [More information]

September 30 – Phenna Group (Nottingham, UK), a family of testing, inspection, certification, and compliance businesses, acquired McCarthy Consulting Group (MCG) (Southport, Australia), a building surveying firm. [More information]

September 30 – Core Laboratories (Houston, TX), a provider of reservoir description and production enhancement services, acquired Solintec (Rio de Janeiro, Brazil), a geological services firm. [More information]

September 30 – GHD (Sydney, Australia), a global design and engineering firm, acquired A.D.A. Engineering (Doral, FL), a firm specializing in stormwater, water and sewer infrastructure, and transportation. [More information]

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