Public engineering firm directory

Find engineering consulting firms by capability and location.

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AGS, Inc.

San Francisco, CA

Enhancing communities and the built environment.

WebsitePhone2 offices6 projects10 leaders7 credentialsFounded 1983

Project: SFO Harvey Milk Terminal Boarding Area B

Service: Geotechnical EngineeringService: Site Characterization & Engineering GeologyService: Seismic Design & AnalysisIndustry: AirportsIndustry: Water SupplyType: Geotechnical Engineering+40 more

Earth Systems

Fremont, CA

Shaping Our Communities

WebsitePhone10 offices13 projects10 leaders8 credentialsFounded 1969

Project: Watts Skatepark

Service: Geotechnical EngineeringService: Geotechnical Feasibility StudiesService: Foundation Design ParametersIndustry: GovernmentIndustry: EducationType: Geotechnical Engineering+29 more

Engeo Incorporated

San Ramon, CA

Expect Excellence

Website28 offices4 leaders1 credentialsFounded 1971Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Geotechnical Earthquake EngineeringService: Environmental EngineeringIndustry: AirportsIndustry: CommercialType: Civil Engineering+37 more

Geo-Advantec, Inc.

San Dimas, CA

Leading Geotechnical Consulting Firm

WebsitePhone1 office3 projects5 leaders7 credentialsFounded 2012

Project: City of Commerce Washington Boulevard Rehabilitation Project

Service: Geotechnical EngineeringService: Geotechnical Field ExplorationsService: Foundation Analysis & DesignIndustry: TransportationIndustry: GovernmentType: Geotechnical Engineering+30 more

GeoTek, Inc.

Las Vegas, NV

Engineering Excellence

WebsitePhone6 offices3 projects1 credentialsFounded 1997Size Estimate: 200+ employees

Project: Rhodes Ranch Residential Development

Service: Geotechnical EngineeringService: Geotechnical Drilling and Subsurface ExplorationsService: Geotechnical Evaluation ReportsIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+44 more

Landmark Consultants Inc

El Centro, CA

Landmark Consultants, Inc. offers a broad range of geotechnical engineering, construction materials testing, and environmental consulting services in Southern California. Serving both public and private sectors, the practice provides technical evaluations from initial site planning through construction. Key services include geotechnical investigations, soil and concrete testing, special inspections, and environmental site assessments.

WebsitePhone2 offices3 leadersFounded 2003Size Estimate: 21 employeesUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Geotechnical InvestigationsService: Geologic and Engineering ReportsIndustry: GovernmentIndustry: Water SupplyType: Environmental Engineering+19 more

Materials Testing, Inc. dba KC Engineering Co.

Vacaville, CA

Engineering Consulting and Testing Firm

WebsitePhone2 offices2 projects3 leaders5 credentialsFounded 1996

Project: The Cypress Avenue Bridge Replacement Project

Service: Geotechnical EngineeringService: Subsurface ExplorationService: Geotechnical Design CriteriaIndustry: TransportationIndustry: Highways & RoadsType: Geotechnical Engineering+36 more

Oak Leaf Engineering Corp

Suisun City, CA

Oak Leaf Engineering Corp is a Suisun City, California engineering firm providing inspection and testing, quality management, engineering, and program management services to construction and industrial clients. President and CEO Albert Carreon led quality assurance for the San Francisco-Oakland Bay Bridge project and brings that background in structural steel inspection and operations management into a firm that integrates nondestructive testing, IBC special inspections, ISO audits, and construction engineering under one practice.

WebsitePhone1 office1 leadersUpdated Jun 2026

Service detail: Inspection and Testing

Service: Inspection and TestingService: Nondestructive Testing and EvaluationService: IBC Special InspectionsIndustry: InfrastructureIndustry: BridgesType: Materials Testing+7 more

Siegfried Engineering Inc

Stockton, CA

Engineering Solutions, Shaping Communities

WebsitePhone5 offices5 projects24 leaders1 credentialsFounded 1955

Project: UC Davis Health, 48X Complex

Service: Civil EngineeringService: Structural EngineeringService: Geotechnical EngineeringIndustry: EducationIndustry: HealthcareType: Civil Engineering+27 more