ABOUT US
Sponseller Group, Inc. offers services as an architectural, structural, mechanical, and electrical engineering firm with established offices in Holland and Sidney, Ohio. Our company responsibility extends beyond projects by fostering a collaborative environment that enables our members to grow, expand their expertise, accumulate valuable experiences, and progress in leadership.
Within the structure of Sponseller Group, Inc., our diverse personnel encompasses professional engineers, graduate engineers, senior designers, and mechanical designers. Our corporate culture actively supports and encourages every staff member in their professional pursuits, personal accomplishments, and community involvement.
Sponseller Group’s main office is located in Holland, Ohio. The 10,000 sq. ft. office houses about forty of our sixty four people from the various disciplines of civil, structural, architectural, electrical, and mechanical system design.

The majority of our projects are completed in our two offices situated in Holland, Ohio and Sidney, Ohio. In addition, we work with general contractors and fabricators to deliver comprehensive engineering and design services. We are grateful that over eighty-five percent of our projects come from repeat business with existing clients.
Our objective is to offer quality engineering services at reasonable and fair compensation, while being able to offer competitive salaries and wages to our employees. At Sponseller, we acknowledge the central role of great personnel coupled with advanced analysis and design software in coming up with effective solutions to your diverse needs. We value and seek out new hires based on their education and experience. Often times we can supplement and expand our staff with new employees from the University of Toledo’s co-op program and then offer them full-time employment once they graduate.
A short history of Sponseller Group
In 1973, Harold Sponseller, a mechanical P.E. departed from his role at Owens-Illinois in research and development to pursue new opportunities. Balancing looking for work during the day with drafting projects in his basement at night or the following day.
The company later located to a second floor office at Byrne and Hill. Clients often requested on-site assistance, leading to the employment of twenty individuals on-site at various manufacturers in the Toledo area. Over time, Harold diversified services to include structural engineering, structural design and detailing.
The company moved to 1446 S. Reynolds Road, Maumee, OH and then to our current location at 1600 Timberwolf Drive in Holland, OH in 1998. A second office is located at 1516 Target Drive in Sidney, Ohio. By focusing on clients within a one to two hour drive of Toledo, we strive to create a family friendly environment for our employees allowing them to be home at night.
Mission Statement
We aim to offer manufacturers, fabricators, and contractors top-tier engineering and design services. Our commitment extends beyond delivering competent engineering work. We prioritize providing meaningful employment projects and competitive benefits to our dedicated staff and their families. We try to offer competitive compensation that matches or exceeds salaries at other area engineering firms, thus fostering a rewarding and sustainable professional environment.
Quality Objective
To meet client expectations on accuracy, content, and delivery, we take responsibility to resolve any complications that may arise.
Safety
Our people are trained with all the required safety training including first aid, lockout/tagout, fall protection, lift training, confined space, AED, CPR, and mine safety.
Values
- Integrity & Honesty – We stand by our commitments and take responsibility for any mistakes or oversights.
- Safety First – We prioritize the well-being of our team members and yours, whether in our office or on-site.
- Respect – We respect everyone from clients and employees to subcontractors.
- Attention to Detail – We ensure precision and timeliness in delivering accurate drawings.
- Leadership – Strive to be a leader at work, home, and in our community.
- Commitment – Dedicated to the success of our clients and employees.
- Competency – Our team comprises of qualified professionals with extensive experience.
- Teamwork & Flexibility – Collaboration is key, and we always strive to find solutions to challenges by being flexible and adaptable.
- Financial Strength – With five decades of operation, our company has a solid foundation for sustained success.
- Professionalism – Maintaining a professional demeanor with clients, employees, and subcontractors.
Community Involvement
Sponseller Group supports the community through WISE – Women in Science and Engineering, WGTE public television, Cast Metal Association, Boy Scouts of America, University of Toledo car competitions, Whiteford High School Robotics Team, United Way, MS Foundation, and other organizations.