Codes, exemptions & field inspections
This guide translates the available agency record into a preconstruction checklist for structural scope, minor work, and inspection release. The adopted code and the issuing official control when a field condition is disputed.
Regulatory framework
2024 Ohio Building Code, Ohio Mechanical Code, Ohio Plumbing Code, and Ohio Existing Building Code based on 2021 International model codes effective March 1, 2024, plus the Residential Code of Ohio and applicable Delaware County building regulations.
Inspection lane
Request inspections through the Delaware County public portal or by email to building@co.delaware.oh.us. Requests received by 3:00 PM are generally scheduled for the following business day; include permit number, project address, inspection type, requested time where applicable, and contact information. Fees must be paid before scheduling.
Minor-work playbook
The county publishes an 'Exempt from Approval' residential section and accessory-building guidance, but the specific exemption list is delivered through its current forms and project-requirements pages; confirm whether a project qualifies before work begins. Zoning, floodplain, and agricultural-exemption documents are handled through the county's Building Safety site.
Field rule
A permit exemption generally addresses one narrow construction trigger. It does not automatically waive zoning, land-use, floodplain, shoreline, fire, energy, electrical, utility, septic, or right-of-way requirements. Obtain written confirmation when the project involves a new structure, structural alteration, change in occupancy, or concealed work.
Inspection pipeline
Request with lead time
Request inspections through the Delaware County public portal or by email to building@co.delaware.oh.us. Requests received by 3:00 PM are generally scheduled for the following business day; include permit number, project address, inspection type, requested time where applicable, and contact information. Fees must be paid before scheduling.
Preserve access
Do not cover framing, reinforcement, wiring, piping, damp-proofing, or life-safety work until the required inspection has been completed and documented.
Close the record
Retain the approved plans, inspection approvals, correction responses, and final certificate or occupancy release with the property file.
Contractor verification
Use the state licensing system to verify active registration, trade credentials, bond status, and liability coverage where available. Match the legal business name to the proposal and permit application.
Planning reference
A building permit is only one part of statutory compliance. Check the local zoning, ordinance, map, or land-use reference before finalizing setbacks, height, lot coverage, access, drainage, or accessory structure placement.
Open planning reference ↗Source trail
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
This record is marked Municipal Fallback. Confirm whether a city, state agency, or other local authority controls the parcel before filing.
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact 740-833-2200; inspection scheduling 740-833-2222.
The county advises that permit status is searchable about 72 hours after all required documents are submitted; inspection requests received before 3:00 PM are generally scheduled for the next business day.
Request inspections through the Delaware County public portal or by email to building@co.delaware.oh.us. Requests received by 3:00 PM are generally scheduled for the following business day; include permit number, project address, inspection type, requested time where applicable, and contact information. Fees must be paid before scheduling.
2024 Ohio Building Code, Ohio Mechanical Code, Ohio Plumbing Code, and Ohio Existing Building Code based on 2021 International model codes effective March 1, 2024, plus the Residential Code of Ohio and applicable Delaware County building regulations. The county publishes an 'Exempt from Approval' residential section and accessory-building guidance, but the specific exemption list is delivered through its current forms and project-requirements pages; confirm whether a project qualifies before work begins. Zoning, floodplain, and agricultural-exemption documents are handled through the county's Building Safety site.
Field sequencing matters
Code compliance is not only a plan-review exercise. Footings, reinforcement, framing, fireblocking, wiring, piping, insulation, weather protection, and life-safety systems each have points where the work must remain accessible. Build the inspection calendar into the trade schedule instead of treating it as a final administrative step.
When a project qualifies for a narrow minor-work exemption, keep a written explanation of why it qualifies and confirm that related zoning, utility, fire, energy, or environmental rules do not create a separate approval requirement.
Closeout file
Keep the approved plan set, inspection approvals, correction responses, contractor license verification, final certificate, and any occupancy release together. A clean record protects the owner, builder, lender, insurer, and future buyer.