Welcome to DLZ! We take a multidisciplinary, collaborative approach to professional services. This allows us to build and lead successful project teams dedicated to providing solutions that save money, improve operations, and solve problems.

Our vision is simple: Create successful partnerships with our clients that facilitate trust, commitment, and communication.

  • 1/5


    We are dedicated to creating responsive, memorable architecture. Exceptional design is the result of strong leadership and teamwork. Furthermore, DLZ’s design process includes the use of the latest design software and a focus on sustainable design principles.

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  • 2/5


    We keep communities moving. We design complex interchanges, restore historic bridges, and develop traffic solutions. In addition, our team creates trails, educates the public on roundabouts, and advances transit systems.

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  • 3/5


    We have been assisting clients in solving their public works projects for nearly a century. As a leading design and consulting firm, DLZ is skilled in all water/wastewater services.

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  • 4/5


    A leader in design and construction of public infrastructure, our construction services division provides construction management, construction observation, scheduling, claims analysis, document control, risk analysis, value engineering, field quality control, and laboratory testing for the construction and rehabilitation of transportation and utility projects.

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  • 5/5


    We provide precision surveying services for a variety of industries and clients. Our professional land surveyors are licensed in numerous states throughout the country. With more than 50 full-time field crews, the depth of our resources and diverse experience provides flexibility for our clients. We’re able to offer the professional surveying services you need, when you need them. We also provide Land and Right-of-Way Acquisition surveying services, including ALTA/ASCM land title, boundary, topographic, and easement surveys.

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Recent DLZ News

DLZ’s Cleveland Materials Testing Laboratory is Here

DLZ is thrilled to introduce our new, full-service materials testing laboratory in Cleveland. The Cleveland Materials Testing Laboratory enhances our extensive network of laboratories by offering both in-lab and on-site field-testing capabilities. Our services include concrete testing, compaction testing, soil analysis, asphalt evaluation, aggregate testing, surveying, and drilling exploration. Serving clients across the Midwestern United…

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DLZ Ranked as One of the Largest Central Ohio Engineering Firms

DLZ is pleased to be ranked by Columbus Business First as the 5th Largest Central Ohio Engineering firm. The 2024 list ranks firms based on their 2023 consulting engineering billings from Central Ohio offices. We are proud to be part of the Central Ohio community. Our 150+ Columbus office employees work, live, and play in…

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Nelsonville Holds Ribbon Cutting Ceremony for New Wastewater Treatment Plant

The City of Nelsonville, Ohio recently held a ribbon cutting ceremony to mark the opening of its new Regional Wastewater Treatment Plant. The $21.2 million project was necessary to replace an old plant that was operating beyond its original capacity. The new facility has a treatment capacity of 1.2 MGD and will serve not only…

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The DLZ Difference

A Multidisciplinary Service Approach to Meet Your Goals

Our ownership structure offers us the flexibility to autonomously make efficient and swift business decisions. Our project managers and client-facing teams have a thorough grasp on the needs and requirements of the communities that we serve. This not only serves as a competitive advantage to DLZ and ensures we are readily available to meet to rising needs of our clients.

Latest Awards

  • Top 500 Design Firms #148 Engineering News-Record, 2024

  • Midwest Top Design Firms #11 Engineering News-Record Midwest, 2024

  • Building Design+Construction’s Giants 400 Report #38 Top  Engineering/Architecture Firms, 2023

  • Largest Central Ohio Minority-Owned Business #2 Columbus Business First, 2024

  • Building Design+Construction’s Giants 400 Report #3 Top Justice Facility/Public Safety, 2023

  • Building Design+Construction’s Giants 400 Report #31 Federal Government Engineering + E/A Firms, 2023

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