About Us

CES Group P.A. was formed in the Fall of 2009. Its proceeding companies, dating back to the 1960’s, include Grove & Company, Cohorst & Associates (1982-2001), and Cohorst Engineering & Surveying (2001-2009). Like our predecessors, CES Group will continue to provide innovative engineering & surveying services to our clients. Our service area includes Northeast Kansas and Southeast Nebraska with a focus on the counties of Washington, Marshall, & Nemaha in Kansas. Providing cost effective services with a personal touch is our goal and we expand on that goal by keeping up with new technologies and building relationships with our clients.

Civil Engineering

  • Tony Duever, PE

Land Surveying, GPS/GIS, MTI & Flood Elevation Mapping & Drafting

  • Robert Peschel, LLS, LPA
  • Clint Friedrichs, AAS, LPA
  • Nick Rengstorf, AAS, LPA

Support Staff

  • Steven Cohorst, PE, RLS
  • W. Charles Weickert, LPA
  • Joseph Peschel, LPA

Office Manager & Secretary

  • Sandra L. Burton

When it comes to construction jobs, it is key to make sure all codes are met and the building is sound and built on good foundation. Hiring a professional surveying company that employees very experienced and professional engineers to make sure all of the above standards are followed. Here at CES Group, this is exactly what you’ll get with our services, guaranteed.

CES Group caters to Marshall County Kansas with premier construction inspections and surveying services. We consist of a group of talented Kansas engineers. Our engineers have made it their life’s goal to make sure that all new construction jobs are on the designated piece of property and that the building is situated on a sound foundation. We survey all jobs; including building construction to road work to make sure that all safety and building codes are being met.

Another one of our Marshall County Kansas services is surveying. This service caters to designating property lines to make sure yours and the neighbor’s paths don’t cross where they shouldn’t. Specifically, our surveying services cater to property surveys, mortgage title inspections, topographic mapping and so much more. We cover every square inch of property line to ensure that there are no errors before building begins.

Thank you for visiting our website. We hope that you find CES Group to have everything you need. We are located in Marshall County Kansas and we provide premier land surveying, construction inspection and so much more. Our dedicated and talented engineers are happy to assist you with whatever your needs are. Our prices are competitive, but our services can’t be beat. Please feel free to contact us to learn more about what it is we do. We look forward to hearing from you.