Public engineering firm directory

Find engineering consulting firms by capability and location.

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2LMN, Inc.

Lancaster, OH

Your Trusted Engineering Partner

WebsitePhone4 offices10 leaders4 credentialsFounded 1979Updated Jun 2026

Service detail: Land Development

Service: Land DevelopmentService: Site Drainage and Grading PlansService: Stormwater Pollution Prevention PlansIndustry: InfrastructureIndustry: GovernmentType: Civil Engineering+48 more

3D Engineering Solutions, LLC

Cincinnati, OH

Measuring & Modeling Quality

WebsitePhone1 office2 credentialsFounded 2007Updated Jun 2026

Service detail: 3D Laser Scanning & Digitizing

Service: 3D Laser Scanning & DigitizingService: Short Range 3D Laser ScanningService: Long Range Laser ScanningIndustry: AerospaceIndustry: AutomotiveType: Materials Testing+28 more

4D Systems

Flint, MI

The future of manufacturing is digital. Are you ready?

WebsitePhone3 offices5 credentialsFounded 2010Updated Jun 2026

Service detail: Controls Engineering

Service: Controls EngineeringService: Control System IntegrationService: Manufacturing Controls SupportIndustry: ManufacturingIndustry: AutomotiveType: Automation & Controls+23 more

7NT Enterprises, LLC

Miamisburg, OH

Proper Execution with Precision

WebsitePhone1 office9 projects1 leaders4 credentialsFounded 2008

Project: Gordie Howe International Bridge

Service: Drilling ServicesService: Rock Coring and Soil SamplingService: Hydraulic Conductivity TestingIndustry: WastewaterIndustry: Water SupplyType: Geotechnical Engineering+19 more

A&A Engineering

Toledo, OH

Innovative, Trusted Structural Engineering Since 1996

WebsitePhone1 office11 leadersFounded 1996Updated Jun 2026

Service detail: Core Structures

Service: Core StructuresService: Metal BuildingsService: Greenhouses & SunshadesIndustry: CommercialIndustry: RetailType: Civil Engineering+24 more

A&B Foundry, Machining, and Fabrications

Franklin, OH

Engineering Excellence + Inspiring Innovation

WebsitePhone1 officeUpdated Jun 2026

Service detail: Castings

Service: CastingsService: Air Set MoldingService: V-Process CastingIndustry: AerospaceIndustry: DefenseType: Industrial Engineering+30 more

AGarvey LLC

Xenia, OH

Protecting Those Who Protect Us

WebsitePhone1 office3 leadersFounded 2012Updated Jun 2026

Service detail: Decontamination Systems

Service: Decontamination SystemsService: Mask Cleaning & DecontaminationService: Room & Surface DecontaminationIndustry: DefenseIndustry: Public SafetyType: Defense Engineering+10 more

AKT Peerless Environmental Services

Dunwoody, GA

AKT Peerless Environmental Services is an environmental consulting and redevelopment firm with more than 35 years of experience and offices across the Midwest, Southeast, and coasts. It serves developers, real estate professionals, financial institutions, government agencies, industrial and manufacturing clients, and petroleum companies. AKT Peerless delivers environmental due diligence, brownfield redevelopment, storage tank compliance, vapor intrusion assessment, environmental remediation, construction loan monitoring, industrial hygiene, sustainability services, and economic development incentive consulting. Its tank services division, AKT Tank Services, focuses on underground and aboveground storage tank work for fuel companies and transportation clients across the Northeast and Midwest.

WebsitePhone12 offices6 leadersFounded 1989Updated Jun 2026

Service detail: Real Estate Environmental Risk Management

Service: Real Estate Environmental Risk ManagementService: Phase I And Phase II Environmental Site AssessmentsService: Property Condition AssessmentsIndustry: Land DevelopmentIndustry: Financial ServicesType: Environmental Engineering+26 more

AMG, Inc.

Dayton, OH

Industrial Facility Engineering

WebsitePhone1 office12 projects1 leaders2 credentials2 publications

Project: Calcium Carbonate Production Plant

Service: Process EngineeringService: PFD and P&ID DevelopmentService: Material and Energy Balance SimulationIndustry: ChemicalsIndustry: Food & BeverageType: Automation & Controls+73 more

Abercrombie & Associates, Inc.

Cincinnati, OH

Civil Engineering and Land Surveying

WebsitePhone1 office5 projects11 leaders3 credentialsFounded 1976

Project: Amazon Distribution Facility

Service: Civil EngineeringService: Roadway and utility design for private and public developmentsService: Stormwater detention and drainage resolutionIndustry: CommercialIndustry: RetailType: Civil Engineering+34 more

Acoustical Systems Inc

Dayton, OH

More Than 45 Years Experience in Noise Control

WebsitePhone1 office3 credentialsFounded 1977Updated Jun 2026

Service detail: Acoustical Consulting and Engineering

Service: Acoustical Consulting and EngineeringService: Architectural Acoustics ConsultingService: Acoustical Engineering Feasibility StudiesIndustry: CommercialIndustry: IndustrialType: Acoustic Consulting+16 more

AdvanceBio LLC

Milford, OH

Biofuels and biochemical industry consultants

WebsitePhone1 office1 leadersUpdated Jun 2026

Service detail: Commercial Bio-Based Process Engineering

Service: Commercial Bio-Based Process EngineeringService: General Project ConsultingService: Technical Due DiligenceIndustry: Biomass & BioenergyType: Owner's Engineer+14 more

Advanced Engineering Consultants

Columbus, OH

Advanced Engineering Consultants specializes in providing mechanical, electrical, plumbing, fire protection, technology, and utilities engineering design and construction administration services for the built environment. Established in 1998, the practice works collaboratively with owners, architects, and contractors across the Midwest, the nation, and globally. It has completed nearly 2,000 projects across diverse sectors including government, healthcare, education, and commercial markets.

WebsitePhone4 offices6 projects7 leaders14 credentialsFounded 1998

Project: Columbus Division of Police Crime Laboratory Renovation

Service: Mechanical EngineeringService: HVAC Design and UpgradesService: Electrical EngineeringIndustry: FederalIndustry: GovernmentType: MEP+23 more

Advanced Resources International, Inc.

Arlington, VA

Pioneering the Past. Innovating the Future.

WebsitePhone3 offices13 projects11 leadersFounded 1990Size Estimate: 60+ employees

Project: World Shale Gas and Shale Oil Resource Assessment

Service: Unconventional Oil & GasService: Shale Gas and Tight Oil Resource AssessmentService: Coalbed Methane Feasibility StudiesIndustry: Oil & GasIndustry: Carbon CaptureType: Petroleum Engineering+20 more

Advantic LLC

Miamisburg, OH

Advantic LLC is a structural design-build firm based in Miamisburg, Ohio, delivering turnkey structural systems that integrate advanced composite materials with in-house fabrication and installation. Advantic specializes in lightweight fiber-reinforced polymer (FRP) and multi-material structural solutions for data center, industrial, edge computing, and AI infrastructure clients, and holds 50-state PE stamping capabilities.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Structural Design

Service: Structural DesignService: Engineer of Record ServicesService: BIM and 3D ModelingIndustry: Data CentersIndustry: Mission Critical FacilitiesType: Structural Engineering+11 more

Algebra AEC, LLC

Cleveland, OH

MEP & Sustainability Consulting

WebsitePhone1 office18 projects1 leadersFounded 2014Size Estimate: 5-30 employees

Project: Cleveland Clinic / CWRU - Health Education Campus

Service: MEP EngineeringService: HVAC EngineeringService: Plumbing EngineeringIndustry: HealthcareIndustry: EducationType: MEP+33 more

All-Phase Power, LLC

Medina, OH

Powering Your Future

WebsitePhone2 offices2 leadersUpdated Jun 2026

Service detail: Electrical Contracting

Service: Electrical ContractingService: Residential Electrical ServicesService: Commercial Electrical ServicesIndustry: CommercialIndustry: ResidentialType: Electrical Engineering+12 more

Allied Erecting & Dismantling Co., Inc.

Youngstown, OH

Allied Erecting & Dismantling Co., Inc. (AED) specializes in the selective and mass dismantling of complex industrial structures. Established in 1973 in Youngstown, Ohio, AED has completed some of the largest and most challenging industrial dismantling projects in the United States, pioneering techniques and equipment for heavy industrial decommissioning. It operates as a wholly owned subsidiary of Allied Consolidated Industries, Inc. (ACI) and draws on sister companies specializing in scrap processing, structural and civil engineering, mechanical engineering, industrial manufacturing, and heavy fabrication.

Website1 office8 credentialsFounded 1973Updated Jun 2026

Service detail: Industrial Dismantling

Service: Industrial DismantlingService: Selective DismantlingService: Mass Structural DismantlingIndustry: IndustrialIndustry: ManufacturingType: Industrial Engineering+10 more

Allison Structural Group

Columbus, OH

Allison Structural Group is a Columbus, Ohio-based structural engineering and inspection consulting practice serving developers, architects, contractors, realty companies, and facility owners. It provides structural design for new and existing buildings, site civil consulting, condition assessments, and industrial support structures. Project types range from residential additions and tenant improvements to industrial plant upgrades and commercial property acquisitions. The practice delivers projects using BIM and Revit for clear, coordinated design documentation.

WebsitePhone2 offices6 projectsSize Estimate: 2-10 employeesUpdated Jun 2026

Project: Sawmill Place Apartment Building

Service: Structural EngineeringService: Structural design for new buildingsService: Structural upgrades and alterations to existing facilitiesIndustry: CommercialIndustry: ManufacturingType: Architecture & Engineering+51 more

Alphaport, Inc.

Strongsville, OH

Advanced engineering, mission assurance, and technology solutions

WebsitePhone1 office2 projects1 credentialsFounded 1999Updated Jun 2026

Project: Spacecraft Reaction Control Ignition System

Service: Aerospace EngineeringService: Rocket and Spacecraft Ignition SystemsService: Defense EngineeringIndustry: DefenseIndustry: AerospaceType: Aerospace Engineering+12 more

American Engineering Group LLC

Akron, OH

Fast-Track Your Product From Concept To Reality

WebsitePhone1 office5 projects11 credentialsUpdated Jun 2026

Project: Pressure Zero Tire Development

Service: Product Design & DevelopmentService: Product ideation and concept testingService: Industrial product designIndustry: DefenseIndustry: HealthcareType: Mechanical Engineering+35 more

Andrew Brock Consulting Engineer LLC

Toledo, OH

Andrew Brock Consulting Engineer LLC is a structural, civil, and specialty delegated engineering practice headquartered in Toledo, Ohio. Serving clients throughout the Midwest and Western states, it provides engineer-of-record services for K-12 and post-secondary schools, industrial facilities, warehouses, hospitals, and commercial developments. The practice has specialized expertise in heavy seismic, high-wind, and Risk Category III and IV facility design, employing 3D building information modeling (BIM) to coordinate seamlessly with architects, contractors, and other consultants.

Website1 office5 leaders3 credentials1 publicationsSize Estimate: 3-10 employeesUpdated Jun 2026

Service detail: Structural Engineering

Service: Structural EngineeringService: Structural Engineer of Record ServicesService: Specialty Delegated EngineeringIndustry: EducationIndustry: IndustrialType: Structural Engineering+25 more

Annex Engineering Group

Columbus, OH

Founded in 2017, Annex Engineering Group is a service-oriented MEP and fire protection engineering firm based in Columbus, Ohio. Annex offers mechanical, electrical, plumbing, and fire protection coordination engineering for projects ranging from office remodels, multi-family residential, and restaurants to manufacturing/industrial facilities and historical renovations. Licensed in 49 states and Washington D.C., Annex serves as the prototype engineer for several national clients, establishing design standards that reduce construction costs and timelines while increasing consistency and quality.

WebsitePhone1 officeFounded 2017Updated Jun 2026

Service detail: Mechanical Engineering

Service: Mechanical EngineeringService: HVAC System DesignService: Central Plant SystemsIndustry: CommercialIndustry: RetailType: MEP+31 more

Apex Engineering & Surveying

Middletown, OH

Apex Engineering & Surveying is a civil engineering and land surveying firm based in Middletown, Ohio, providing cost-effective and timely engineering solutions since 1999. The team delivers personal service for single and multi-family residential developments, commercial and mixed-use sites, roadway and utility projects, and industrial work from concept through construction permitting. Services include grading and road design, construction engineering, water resources engineering, utilities design, and property line locating.

WebsitePhone1 officeFounded 1999Updated Jun 2026

Service detail: Civil Engineering Services

Service: Civil Engineering ServicesService: Grading and Road DesignService: Construction EngineeringIndustry: ResidentialIndustry: CommercialType: Civil Engineering+8 more