47 leading Civil Engineering companies in California (2026 list)

These civil engineering companies in California include large, established firms and mid-sized companies. They specialize in a range of infrastructure projects, from water and environmental solutions to transportation and urban development. Tetra Tech provides global consulting and engineering services for water, environment, and infrastructure. URS Corporation, an AECOM Company, offers design, construction, and operations for infrastructure assets. Moffatt & Nichol is a global infrastructure advisor specializing in coastlines and harbors, while Psomas focuses on sustainable projects in transportation and land development. Many firms offer a broad spectrum of services including planning, design, construction management, and surveying.There is a notable concentration of these civil engineering firms in major Californian cities. San Francisco, Los Angeles, and San Diego each host multiple headquarters, indicating significant hubs for engineering expertise and project management within the state. Several companies, such as BKF Engineers, Kennedy Jenks, and Mark Thomas, have been established for over a century, demonstrating a long-standing presence and deep experience in the sector.

#	Company	Industry	Headquarters	Employees	Founded
1	Tetra Tech tetratech.com A global provider of consulting and engineering services, specializing in innovative technical solutions for water, environment, infrastructure, energy, and international development projects	Civil Engineering	🇺🇸 Pasadena	27,460	n/a
2	URS Corporation, An AECOM Company urs.com A global professional and technical services firm offering design, construction, and operations of infrastructure assets worldwide for public and private clients	Civil Engineering	🇺🇸 San Francisco	8,221	n/a
3	American Hair Force Civil engineering company located in Folsom, California, specializing in various civil engineering services in the United States	Civil Engineering	🇺🇸 Folsom	7,277	n/a
4	TYLin tylin.com Design infrastructure solutions enhancing mobility, sustainability, resilience, and innovation to connect and elevate communities worldwide with advanced engineering approaches.	Civil Engineering	🇺🇸 San Francisco	3,321	n/a
5	County of Los Angeles Department of Public Works pw.lacounty.gov The organization plans, designs, constructs, and upkeeps modern infrastructure to enhance all communities within LA County	Civil Engineering	🇺🇸 Alhambra	3,303	1985
6	Kleinfelder kleinfelder.com Engineering, science, and construction firm offering solutions for transportation, water, energy, and private infrastructure projects with a dedicated, cross-disciplinary team	Civil Engineering	🇺🇸 San Diego	2,656	n/a
7	Moffatt & Nichol moffattnichol.com Global infrastructure advisor specializing in planning and designing coastlines, harbors, rivers, transportation, and energy facilities with a focus on excellence and customization	Civil Engineering	🇺🇸 Long Beach	1,220	1945
8	Psomas psomas.com A full-service consulting firm specializing in award-winning projects with a focus on sustainability in Transportation, Water, Facilities, Land Development, Energy, and Federal markets	Civil Engineering	🇺🇸 Los Angeles	799	1946
9	BKF Engineers bkf.com A California-based engineering firm offering services in engineering, surveying, and land planning for various industries and projects for over 100 years	Civil Engineering	🇺🇸 Oakland	777	1915
10	Cadeploy cadeploy.com A fast-growing Engineering solutions company offering detailed services in construction, industrial, infrastructure, automotive, and aerospace sectors with a commitment to quality and reliability	Civil Engineering	🇺🇸 Danville	685	2012
11	Kennedy Jenks kennedyjenks.com An employee-owned engineering firm providing innovative water and environmental solutions to government, private, and transportation clients for over a century	Civil Engineering	🇺🇸 San Francisco	587	1919
12	Mark Thomas markthomas.com Planning, civil and structural engineering, construction management, land surveying, landscape architecture, urban design, and district management for public agencies.	Civil Engineering	🇺🇸 San Jose	574	1927
13	Cordoba Corporation cordobacorp.com A California-based firm specializing in engineering, construction management, program management, and planning for transportation, water, energy, education, and facilities projects statewide	Civil Engineering	🇺🇸 Los Angeles	499	1983
14	Ninyo & Moore, A SOCOTEC Company ninyoandmoore.com Providing geotechnical and environmental engineering, soil and materials testing, and inspection services for governmental, commercial, and private sector clients since 1986	Civil Engineering	🇺🇸 San Diego	477	1986
15	RICK rickengineering.com Multi-disciplinary planning, design, and engineering firm with over 65 years of experience serving public and private sector clients in various disciplines	Civil Engineering	🇺🇸 San Diego	471	1955
16	CWE cwecorp.com A dynamic civil engineering firm providing solutions for water resources, environmental projects, stormwater management, and complete project delivery in Western United States	Civil Engineering	🇺🇸 Fullerton	459	2006
17	Intecsa Group intecsa.eu A Spanish engineering company specializing in transport, ports, logistics, building, water, and environment projects with global presence in multiple countries	Civil Engineering	🇺🇸 Los Angeles	453	1965
18	Fehr & Peers fehrandpeers.com Transportation planning and engineering firm providing innovative, data-driven solutions to improve mobility, safety, and community well-being nationwide.	Civil Engineering	🇺🇸 Walnut Creek	438	1985
19	MPF mpf-tnr.com Specializing in large capital program delivery, we serve both public and private sectors including transit agencies, design firms, and railroads	Civil Engineering	🇺🇸 Walnut Creek	381	2022
20	AutoDesk Civil 3D & AutoCAD youtube.com Specializes in offering courses in Highways Design, Civil 3D, and AutoCAD to enhance skills and knowledge in these areas	Civil Engineering	🇺🇸 Sunnyvale	375	n/a
21	Wood Rodgers, Inc.woodrodgers.com A forward-thinking and innovative engineering, planning, surveying, and mapping consulting firm challenging the status quo and fostering creativity in California and Nevada	Civil Engineering	🇺🇸 Sacramento	367	1997
22	Sandis sandis.net A professional services corporation specializing in civil engineering, traffic engineering, land surveying, and planning with expertise in Land Development Design for various sectors	Civil Engineering	🇺🇸 Campbell	367	1965
23	CHC Consulting, a Congruex Company congruex.com An engineering consulting firm specializing in telecommunications and utilities, providing services in engineering, design, project management, process development, improvement, and staffing	Civil Engineering	🇺🇸 San Clemente	344	2003
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24	Degenkolb Engineers degenkolb.com A leading engineering firm founded in 1940, specializing in award-winning structural designs that save clients money and achieve outstanding project results	Civil Engineering	🇺🇸 San Francisco	332	1940
25	Caltrans District 8 dot.ca.gov A transportation engineering entity in Riverside and San Bernardino counties, providing safe transportation infrastructure through maintenance and delivery of roads	Civil Engineering	🇺🇸 San Bernardino	278	n/a
26	GEOCON geoconinc.com A California corporation offering geotechnical engineering, environmental consulting, construction inspections, materials testing, environmental remediation contracting, and operating soils and materials testing laboratories	Civil Engineering	🇺🇸 San Diego	255	1971
27	TSD Engineering, inc.tsdeng.com A land development firm in Northern and Central California and Nevada offering Civil Engineering and Surveying Services for residential and commercial projects	Civil Engineering	🇺🇸 Folsom	229	n/a
28	RBF Consulting, a Company of Michael Baker International rbf.com A leading civil engineering and design firm providing a wide range of services for public, governmental, and private organizations worldwide	Civil Engineering	🇺🇸 Irvine	205	1944
29	Certerra RMA Group rmagroupinc.com Client-centered geotechnical engineering and materials testing firm with multiple California offices Specializes in services like geotechnical engineering, pavement engineering, and environmental engineering	Civil Engineering	🇺🇸 Rancho Cucamonga	184	1962
30	City of Santa Fe Springs santafesprings.gov Planned community in Santa Fe Springs with thriving industrial environment, recreational spaces, and a mission to improve quality of life for residents and businesses	Civil Engineering	🇺🇸 Santa Fe Springs	183	n/a
31	Leighton - A Verdantas Company verdantas.com A company providing environmental, geotechnical, materials testing, and inspection services with a team of engineers, geologists, technicians, and inspectors Offering various job opportunities	Civil Engineering	🇺🇸 Irvine	182	1961
32	Albert A. Webb Associates (WEBB)webbassociates.com A long-standing firm with expertise in infrastructure systems, planning, and land development, making a major impact throughout the region	Civil Engineering	🇺🇸 Riverside	179	1945
33	Ghirardelli Associates ghirardelliassoc.com The company provides construction inspection, management, permit oversight, and program management services to clients, solving problems and reducing costs efficiently	Civil Engineering	🇺🇸 Roseville	174	1999
34	City of Los Angeles Department of Building and Safety ladbs.org This company provides a wide range of services in Los Angeles, such as permit issuance, inspections, code enforcement, trade licenses, and customer service	Civil Engineering	🇺🇸 Los Angeles	172	1781
35	Sunshine Construction sunshine-construction-inc.com A Civil Engineering company based in California that specializes in construction projects	Civil Engineering	🇺🇸 Temple City	171	n/a
36	Riverside County Flood Control and Water Conservation District rcflood.org The company is dedicated to protecting people, property, and watersheds from flood damage, while also conserving and reclaiming water for beneficial use	Civil Engineering	🇺🇸 Riverside	165	1945
37	TKE Engineering, Inc.tkeengineering.com A premier multi-disciplinary engineering and construction consulting firm in Southern California, dedicated to community needs with focus on quality, efficiency, and value creation	Civil Engineering	🇺🇸 Riverside	164	2000
38	Dokken Engineering dokkenengineering.com With over 30 years of experience, this company provides engineering, environmental, right of way, and construction management services for transportation projects	Civil Engineering	🇺🇸 Folsom	161	1986
39	McMillen Jacobs Associates A reorganization split-off has resulted in the Water Resources Division separating from the Parent Company, allowing each division to focus strategically on their respective clients and work	Civil Engineering	🇺🇸 San Francisco	160	1954
40	GFDS Engineers gfdseng.com A structural design firm dedicated to making architects heroes by providing innovative and creative solutions for residential estates and iconic landmarks	Civil Engineering	🇺🇸 San Francisco	159	n/a
41	Wallace Group wallacegroup.us A team of professionals specializing in Civil & Transportation Engineering, Construction Management, and more, dedicated to delivering cost-effective design solutions through collaboration	Civil Engineering	🇺🇸 San Luis Obispo	156	1984
42	MKN mknassociates.us Specializing in water and wastewater solutions, MKN provides innovative and cost-effective strategies to meet clients' water resources goals in California since 2012	Civil Engineering	🇺🇸 Arroyo Grande	150	2012
43	SIKAND ENGINEERING sikand.com A trusted provider of innovative and cost-effective engineering solutions for a wide range of projects in residential, industrial, and commercial developments	Civil Engineering	🇺🇸 Sherman Oaks	43	1959
44	Shayam shayam Providing innovative solutions and services in the industry, helping clients achieve their goals and drive success	Civil Engineering	🇺🇸 Santa Clara	27	2004
45	SGE Consulting Engineers sgeconsulting.com An established engineering firm providing civil and structural services for industrial and commercial projects nationwide, with expertise in rapid project turnaround	Civil Engineering	🇺🇸 Irvine	10	1992
46	Sky Parsi Engineering & Consulting Corporation speccorporation.com An emerging corporation specializing in mechanical, electrical, plumbing, and energy engineering, providing innovative solutions for a diverse range of clients	Civil Engineering	🇺🇸 Newport Beach	5	n/a
47	Laboratory for the Chemistry of Construction Materials (LC2)lcc-ucla.com The company conducts research to develop sustainable, low-carbon materials for infrastructure construction, focusing on improving concrete performance while promoting environmental responsibility	Civil Engineering	🇺🇸 Los Angeles	3	2010

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

47 leading Civil Engineering companies in California

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