About Us



A tradition of Teamwork, Experience and Innovation has propelled Kornhaas Construction to a high level of success. Since it was founded in 1973, Kornhaas has grown steadily. Our company specializes in the construction of quality commercial and industrial buildings.

  • Manufacturing
  • Industrial Service
  • Medical Centers
  • Research Laboratories
  • Educational Facilities
  • Restaurants
  • Industrial Facilities



  • Construction Management
  • Design / Build
  • Negotiated Contract Services
  • Butler Manufacturing, Pre-Engineered Building Systems.

Our winning team of skilled professionals demonstrates a total commitment to excellence in all phases of the construction process. The team is backed up by the strong financial position and bonding capacity of Kornhaas Construction. Kornhaas Construction, Inc. is located in Ardmore, Oklahoma and currently serves a geographical area of South Central Oklahoma and North Texas.


Our Team

Our team of experienced construction professionals consistently demonstrates a commitment to excellence in all we do. We will guide you through every step of the building process, from design to pre-construction, construction and the close-out phase of the project. 

We will bring together the best team for your project that will see your project go from idea to realization. We will do this by a providing safe, efficient work-site, remaining ever conscious of your budget, and maintaining a schedule that keeps the project on track. 

Kornhaas Construction cares about you and your organization. Kornhaas Construction looks forward to being your trusted building partner. 

Our Administrative Team

kim kornhaas

M. Kim Kornhaas


Poised to graduate from the University of Oklahoma with a degree in Architecture, Kim worked weekends and summers with his father at M.J. Kornhaas Construction. Inevitably Kim fell in love with construction and changed focus. After taking construction science courses Kim encouraged his father to delve into commercial construction. After 10 years working in all aspects of the company, Kim took the helm in 1987 and Kornhaas Construction has been delivering projects successfully year after year. Kim brings his wealth of knowledge, expertise in estimating, understanding of architecture, and years of construction experience to his leadership role. He works closely with owners and architects on each project, reviews estimates and keeps his hand on the pulse of company operations to insure each owner has the personal attention they deserve, and each project goes as smoothly as possible. 


Bachelor of Science in Environmental Design, University of Oklahoma 1977

Undergraduate Degree in Architecture, University of Oklahoma 1977

Korri M. Kornhaas - Safety Director, Contract Administrator

Korri M. Kornhaas

Safety Director/Contract Administrator

Korri began her career with Kornhaas Construction in 1991 with the task of implementing and maintaining a comprehensive safety program. This program is to ensure Kornhaas Construction compliance with all OSHA regulations and ensure the safety of all employees working on Kornhaas Construction job sites.  Korri is also responsible for the administration of all contracts and insurance.  Korri attended Oklahoma State University and is certified through the State of Oklahoma Safety Council. 



Camie Hastings


With a Business Administration Degree from the University of Florida, Camie brings 20+ years of Accounting experience in various aspects of the Corporate and Private business world. Her accounting experience includes retail service, transportation, financial services technology and construction. In addition to accounting, Camie is an active Real Estate Broker in both Texas and Florida with 6+ years of residential real estate experience. From the smallest of details to the overall financial process, she brings a coupling of education and hands on experience that is very unique. 




     Bachelor of Science in Business Administration, University of Florida 2011

     National Association of Realtors, 2013


Our Project Managers

Greg E TwitchellGreg E. Twitchell

Vice President/General Superintendent

Greg has been with Kornhaas since 1987 and has managed field operations for every project. He will be a familiar face on each job site as he ensures the Site Superintendents and Construction Managers have the equipment, tools, and manpower they need to get the job done. Greg meets weekly with Construction Managers and Site Superintendents to review job site needs for long-term and short-term equipment and manpower, and confirms operational and safety guidelines are being adhered to. All Kornhaas projects run smoothly in part due to Greg's professional over-site and guidance. 



    Non Commissioned Officer Engineering School, U.S. Army-M.O.S.-12B40 Combat Engineer, College of Marin, Kentfield, CA,  1972



Thomas Fred Pruitt


With more than 40 years of hands on construction experience, Fred has worked on every size of project and is skilled at seeing the big picture and moving a project along towards successful completion. He has excellent work ethic and loves to share his knowledge and skills on the job-site. Fred has the skill to visualize the project from concept to closeout, and understands the importance of staying on budget, completing the work on time, and making sure the client has a building that will stand the test of time. He is an accomplished Project Manager and is exceptional at creating rapport with all team members as they work through the complexities of a project toward a common goal. Fred's easy going nature and love for what he does brings a positive atmosphere to each project he manages. 


    AGC Master Craftsman


Greg Travis

Project Manager/Estimator

Greg grew up in the construction industry, with more than 20 years in Construction Management, and brings a wealth of knowledge to each project. His leadership skills and ability to develop lasting relationships with clients, consultants and vendors, makes him a valuable member of our management team. Greg has a proven track record of guiding projects from conception through the pre-construction and construction phases to a successful completion, consistently meeting or exceeding clients’ needs. Because of his leadership and extensive construction knowledge, he easily earns the trust of the entire team, which allows the project team to navigate the challenges and opportunities that each project affords.



    Construction Management, Oklahoma State University