Public engineering firm directory

Find engineering consulting firms by capability and location.

Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.

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ADV-SOC, Inc.

San Diego, CA

Mission-Driven.

WebsitePhone1 office9 projects2 leadersFounded 2012Updated Jun 2026

Project: Naval Air Station North Island Soil Investigation

Service: Environmental ServicesService: Phase I and Phase II Environmental Site AssessmentsService: Underground Storage Tank Assessment and ClosureIndustry: FederalIndustry: DefenseType: Architecture & Engineering+39 more

AEPC Group, LLC

Santa Clarita, CA

We build confidence

WebsitePhone1 office1 projects4 leadersUpdated Jun 2026

Project: Offset Success for Aviation Client

Service: ArchitectureService: Schematic and Conceptual Design DevelopmentService: Construction Documents and SpecificationsIndustry: AerospaceIndustry: AviationType: Architecture & Engineering+40 more

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

ATC Design Group

Escondido, CA

California's Only One Stop Shop

WebsitePhone1 officeFounded 1993Updated Jun 2026

Service detail: Planning and Permitting

Service: Planning and PermittingService: EntitlementsService: Permit ExpeditingIndustry: CommercialIndustry: RetailType: Architecture & Engineering+37 more

Edifica USA

Lake Forest, CA

Multi-discipline geotechnical, structural, and environmental engineering services

WebsitePhone2 offices1 projectsUpdated Jun 2026

Project: SPLA Port

Service: Geotechnical EngineeringService: Geotechnical Design and AnalysisService: Subsurface Exploration for InfrastructureIndustry: Ports & HarborsIndustry: Highways & RoadsType: Geotechnical Engineering+40 more

Engineered Power Solutions

Templeton, CA

Powering Innovation

WebsitePhone1 office1 projects6 leaders2 credentialsFounded 2012

Project: Voyager Tracker Project

Service: Structural EngineeringService: Photovoltaic (PV) System DesignService: Utility-Scale Infrastructure EngineeringIndustry: SolarIndustry: Power GenerationType: Structural Engineering+4 more

InnoDez

Los Angeles, CA

Your One-Stop Shop for MEP and Structural Engineering

WebsitePhone8 offices5 projectsSize Estimate: 20-100 employeesUpdated Jun 2026

Project: MEP and Fire Protection for Triple Decker Multifamily Project

Service: Mechanical EngineeringService: Heating designService: Cooling designIndustry: CommercialIndustry: HealthcareType: Civil Engineering+72 more

Kleinfelder

San Diego, CA

Bright People. Right Solutions.

Website1 officeFounded 1961Updated Jun 2026

Service detail: Geotechnical

Service: EnvironmentalService: GeotechnicalService: Tailings Facility DesignIndustry: AviationIndustry: CommercialType: Automation & Controls+57 more

Lumos & Associates

Carson City, NV

Responsible Engineering

WebsitePhone8 offices7 projects3 leaders9 credentialsUpdated Jun 2026

Project: Tahoe Keys Upper Truckee Marsh

Service: Civil EngineeringService: TransportationService: Stormwater Analysis and DesignIndustry: GovernmentIndustry: InfrastructureType: Civil Engineering+36 more

Partner Engineering and Science, Inc.

Pasadena, CA

Engineers Who Understand Your Business

WebsitePhone17 offices7 projects11 leadersSize Estimate: 1,500+ employeesUpdated Jun 2026

Project: Adaptive Reuse of North Riverfront Historic Industrial Portfolio

Service: Building Assessments & EngineeringService: Property Condition Assessment ReportsService: Commercial Building InspectionIndustry: CommercialIndustry: Multifamily ResidentialType: Environmental Engineering+53 more

RockSol Consulting Group

Thornton, CO

RockSol Consulting Group is a full-service civil and transportation engineering practice founded in 1996. Headquartered in Thornton, Colorado, with multiple regional offices and accredited materials testing laboratories, it delivers engineering services across planning, environmental analysis, structural and geotechnical design, construction management, and inspection. It primarily supports state departments of transportation, federal land agencies, and municipal public works departments throughout the western United States.

WebsitePhone7 offices5 projects5 credentialsFounded 1996Size Estimate: 201-500 employees

Project: US 40 Berthoud Pass West Resurfacing

Service: Transportation EngineeringService: Transportation planning and impact studiesService: Roadway and highway designIndustry: GovernmentIndustry: FederalType: Civil Engineering+45 more

Rutherford + Chekene

San Francisco, CA

Leading Structural and Geotechnical Engineering in CA

WebsitePhone2 offices16 projects12 leaders15 credentialsFounded 1960

Project: de Young Museum

Service: Structural EngineeringService: Seismic Evaluation and RetrofitService: Base Isolation DesignIndustry: HealthcareIndustry: EducationType: Structural Engineering+23 more

SALEM Engineering Group, Inc.

Fresno, CA

SALEM Engineering Group, Inc. is a multi-disciplined national engineering and environmental consulting firm headquartered in Fresno, California. SALEM provides geotechnical engineering, environmental consulting, civil engineering and land surveying, structural engineering, engineering geology, hydrogeology, forensic engineering, drilling, and construction inspection and materials testing services. With in-house drilling equipment and certified geotechnical laboratories, SALEM serves developers, architects, government agencies, utility companies, municipalities, insurance companies, attorneys, and private owners across the United States.

WebsitePhone1 office6 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Foundation and Slab Engineering DesignService: Subsurface Soil InvestigationsIndustry: ResidentialIndustry: CommercialType: Geotechnical Engineering+30 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

Tall Tree Engineering

Willits, CA

Civil Engineering, Topographic Mapping, and Regulatory Compliance

WebsitePhone2 offices2 leadersFounded 2020Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site DevelopmentService: Grading and Drainage PlansIndustry: GovernmentIndustry: Land DevelopmentType: Civil Engineering+53 more

The Eden Group

Los Angeles, CA

Civil & Structural Engineering in Southern California

WebsitePhone2 offices2 projectsFounded 1982Updated Jun 2026

Project: Rancho Estate

Service: Civil EngineeringService: Grading PlansService: Drainage & HydrologyIndustry: ResidentialIndustry: Multifamily ResidentialType: Civil Engineering+29 more

Urban Engineers Inc

Philadelphia, PA

Be Part of Something Bigger

WebsitePhone14 offices7 projects7 leaders4 credentialsFounded 1960

Project: I-78/SR 61 Bridge Replacement and Interchange Reconstruction

Service: PlanningService: Multimodal Circulation PlanningService: Bicycle & Pedestrian PlanningIndustry: AviationIndustry: BridgesType: Civil Engineering+47 more

VN Tunnel and Underground, Inc.

Azusa, CA

Tunnel and Underground Engineering & Construction Management Services

WebsitePhone1 office4 projects2 leadersFounded 2017Size Estimate: 1-5 employees

Project: Regional Connector Transit Corridor

Service: Tunnel EngineeringService: Geotechnical EngineeringService: Structural EngineeringIndustry: TransitIndustry: TunnelsType: Civil Engineering+5 more

Wiss, Janney, Elstner Associates, Inc.

Northbrook, IL

Solutions for the Built World

WebsitePhone30 offices5 projects5 credentials5 publicationsFounded 1956

Project: Washington Monument

Service: Structural EngineeringService: Bridge EngineeringService: Heavy Movable StructuresIndustry: GovernmentIndustry: TransportationType: Architecture & Engineering+54 more