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Turner is a North America-based, international construction services company and is a leading builder in diverse market segments.

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Our people bring their technical knowledge, experience, and resourcefulness to the delivery of our construction services. Our expertise and value-added offerings support our clients throughout the lifespan of the construction process.

As the largest general contractor in the country, Turner is a leader in all major market segments, including healthcare, education, commercial, sports, aviation, pharmaceutical, retail and green building.

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An awarding and fulfilling career awaits you at Turner! Join our team and build some of the most exciting and innovative projects around the world.

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Four Seasons Modernization

Four Seasons Modernization

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Additional Information

Thanks for your interest in Turner. Whether you are looking to start a project, get support, or just have a general question, we want to hear from you. Drop us a line and we will get back to you.

Turner Construction Company

66 Hudson Boulevard East

New York, NY 10001

(212) 229-6000 turner@tcco.com

Report issues 24 hours a day, 7 days a week to Turner’s Confidential Reporting System

(888) 738-1924 https://turnerconstruction.ethicspoint.com

Before reaching out, please review our prequalification requirements.

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Key Contacts

Ryan Gundy

Business Manager

Email: rgundy@tcco.com

Allen Ziemkiewicz

Vice President, Construction Executive

Email: aziemkiewicz@tcco.com

Noah Caris

SPD / SPO Manager

Email: ncaris@tcco.com

John LaPorte

Procurement Manager

Email: jlaporte@tcco.com

Sommer Vriezelaar

Regional Business Development Manager

Email:  svriezelaar@tcco.com

Recent Awards & Recognition

2026, 2025, 2024, 2022, 2021, 2020, 2019 The Blade Top Workplace

2025 AGC Build Ohio Award (New Construction Under $50 Million): National Museum of the Great Lakes

2025 REjournals Best of the Best Midwest Top Contractor

Toledo (Lathrop)

28 N. St. Clair Street, Suite 200
Toledo, Ohio 43604
United States
(419) 893-7000

Decades of experience delivering steady execution across Northwest Ohio.

Since 1895, Lathrop has been Northwest Ohio's most trusted builder. We handle projects from $5,000 to $400 million with a team of 200+ professionals who foster innovation and embrace emerging tech. Acquired by Turner in 1986, we now combine hometown credibility with the resources of America's leading general builder. We balance program, budget, time, and aesthetics on the region's most complex builds.

Strategic Leaders Strengthening Communities and Partnerships

Our leadership team strengthens communities through trusted client relationships and local partnerships. They collaborate with trade partners, industry peers, and organizations to deliver projects while building lasting connections. 

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Ryan Gundy

Ryan Gundy

Business Manager

Allen Ziemkiewicz

Allen Ziemkiewicz

Vice President, Construction Executive

Joe Cleveland

Joe Cleveland

Construction Executive

Karen Karl

Karen Karl

Pre-Construction Manager - BU

John LaPorte

John LaPorte

Procurement Manager

Rena Garcia

Rena Garcia

Human Resources Director

Deb Liskai

Deb Liskai

Marketing Manager / Community and Citizenship

Leadership Lathrop Volunteer & Support with Neighbor Works

Leadership Lathrop Volunteer & Support with Neighbor Works

Every year Leadership Lathrop, a group of new hires, organize a large volunteer project for the Lathrop business unit. NeighborWorks Toledo helps restore and revitalize local neighborhoods, primarily for the benefit of current and future residents, by providing services and programs that renew pride, stimulate reinvestment and restore confidence and trust.

Glass City Center

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