All firms, including sole proprietorships, partnerships, associations, limited liability companies or corporations, providing, or offering to provide, engineering or surveying services in the state of Ohio needs a Certificate of Authorization (COA) from the State Board of Registration for Professional Engineers and Surveyors. You can find the legal requirements in Ohio R.C. section 4733.16 and Ohio A.C. section 4733-39.
Prior to registering with the State Board of Registration for Professional Engineers and Surveyors, all firms must register their firm name with the Ohio Secretary of State (unless you are a sole proprietor providing services under your personal name). Please click here for more details.