How to Start a Construction Company in Ohio

This is the single most important thing to understand. Ohio's Construction Industry Licensing Board (OCILB), within the Department of Commerce's Division of Industrial Compliance, issues state licenses for five commercial trades: electrical, plumbing, HVAC, hydronics, and refrigeration—for work on commercial buildings. For residential home-improvement work over $25,000, a separate program under ORC Chapter 4722 applies (administered through the Ohio Attorney General's framework). And for general contracting, carpentry, and remodeling there's no state license—instead, you register as a contractor with each city or county where you work, and many require a home-improvement license for residential jobs (overview).

Construction is high-liability—form an Ohio LLC (or corporation) so a job-site injury or defect claim targets the business, not your home. Appoint a statutory agent and get an EIN. Many established contractors elect S-corp taxation once profits justify it—ask your CPA.

If you're a general contractor or remodeler rather than a state-licensed trade, you'll register locally with each municipality you work in—Columbus, Dublin, Westerville, and others each have their own contractor registration, fees, and (for residential work) home-improvement requirements. Check every jurisdiction before you bid. Remember that residential remodeling contracts over $25,000 carry consumer-protection obligations under ORC 4722.

You won't get permits or commercial contracts without coverage. Expect to carry general/contractor liability (the OCILB trades require at least $500,000), commercial auto, and workers' compensation through the Ohio BWC once you have employees. Cities often require a surety/contractor bond for registration, and larger projects may demand performance and payment bonds. Builder's risk insurance protects work in progress.

Construction has special Ohio sales/use-tax treatment—contractors often pay tax on materials they incorporate into real property rather than collecting it, but it depends on whether you're performing a construction contract or selling and installing tangible personal property. Set up the correct tax accounts (and a vendor's license where you make taxable sales). Classify crews carefully: laborers you direct are usually employees (workers' comp, payroll), and misclassifying them as 1099 subcontractors is a costly audit risk.

Formation is quick; the real lead time is licensing (trade exams or local registrations), bonding approval, and lining up insurance. Equipment and working capital to float labor and materials between draws are the bigger financial hurdles. Plan a few weeks to be fully registered and insured before bidding your first permitted job—longer if you're pursuing an OCILB trade license and need to schedule and pass the PSI exams.