Meeting the needs of AEC & Construction businesses since 1972

Fifty years is a long time to keep a family-owned company in business and a big accomplishment to be thriving and expanding into new territories after fifty years. 

Making good business decisions, watching industry trends, and keeping up with technology are all important but it’s also important to build the right team and create a culture where employees are set up for success. 

CEO, Mark Langdon takes time to know his employees, their families, their kids, and even their hobbies. “I call my employees team members. There’s a quote from Richard Branson of Virgin Airlines that says: ‘Customers do not come first. Employees come first. If you take care of your employees, they will take care of the customers.’ I live by this quote,” says Langdon. 

Employees are a valuable part of the team. More than half of the 55 employees have been with Eastern Engineering for more than 10 years. Remarkable! Thank you for all your energy, and effort and for always giving our customers exceptional service. 

Mary Langdon retired from her role as President in late December 2021. Dawn Langdon has assumed the role of President after working for Eastern Engineering for more than 27 years. She has extensive business and leadership experience from her key responsibilities managing human resources and accounting departments. Mark and Dawn plan to continue to expand the family business. 

We are proud to have helped the AEC industry to successfully plan, design, engineer, and build some of the best communities and cities in the country. 

As we celebrate our 50-year milestone, we want to thank all our customers, employees, friends, family, vendors, and partners for supporting us. We are truly grateful and appreciate everything you do each day. 

Many thanks. It’s been an incredible 50 years! 

Eastern Engineering would like to thank each employee for their exceptional contributions over the years. We could not do it without their dedication. Our success and ability to make it through tough times is a reflection of their commitment and hard work. 

Be sure to read the article in APDSP Today. The article tells the story of the defining moments in our history that gave Eastern Engineering our unique success.



Detroit Service Center

By Appointment Only

25179 Dequindre Road

Madison Heights, MI 48071

Office: (248)-707-1890

Cincinnati, OH

6920 Plainfield Rd,
Cincinnati, OH 45236
Phone - (513) 793-1030

Covington, KY

434 Scott St,
Covington, KY 41011
Phone: (859) 261-1851