Electronic or paper plan review and approvals for new building construction, alterations, additions, and change of occupancy. Once plan review is complete, the necessary permits may be obtained and construction may begin.Plan submission must meet the requirements for construction documents, as detailed in the Residential Code of Ohio, regardless of the plan preparer. The construction documents shall be accompanied with the application form and attached worksheets. The construction of any new addition, alteration and accessory structure to a commercial or mixed-use building requires a building permit. How to obtain a building permit. Apply for permits online at the Franklin County Online Permit Center. For all permits: Fill out the appropriate application and pay the calculated fee.