ADU Permit Fees & Costs in Columbus, Ohio
Everything you need to apply for a adu permit in Columbus, Ohio — documents, fees, steps, and a downloadable submission packet.
Key Facts
- Permit required
- Yes
- Submission method
- Online
- Typical fee range
- $4,500 – $12,375
- Review time
- Varies by jurisdiction
- Inspections
- 6 inspections required
Limited Data Available
Some information on this page has not been fully verified. We're working to improve data quality. Always verify with Columbus directly.
Estimated Total Fees
$4,500 – $12,375
Range based on typical residential solar PV system. Actual fees depend on project valuation and system size.
| Fee Component | Range | Confidence |
|---|---|---|
| ADU Permit Fee[1][2] Permit fees based on construction valuation per Columbus fee schedule. Building permit, plan review, and inspection fees included. Impact fees may apply for utilities and infrastructure. | $3,000 – $7,500 | ✓ |
| Plan Review Fee[3][4] Plan review fee is typically 50-65% of the permit fee. | $1,500 – $4,875 | ✓ |
| Estimated Total | $4,500 – $12,375 |
Fees shown as ranges. Always verify the exact amount with Columbus before submission. Additional fees may apply for expedited review or resubmittals.
Generate your permit packet
Get a personalized ADU permit packet for Columbus, Ohio — tailored to your project details.
- Required forms: Building Permit Application, and more
- Pre-filled templates: Permit Cover Sheet
- Fee breakdown: $1,500–$7,500 estimated total
- Step-by-step City of Columbus Department of Building and Zoning Services portal submission guide
- Inspection prep checklist (6 items)
- Personalized for your specific project details
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Required Documents
Columbus requires the following documents for this permit application.
Building Permit Application
Completed City of Columbus building permit application with complete project description, property owner contact information, and construction cost estimates
Architectural Drawings
Complete architectural plans signed by a licensed Ohio architect, including floor plans, elevations, sections, and construction details with compliance notes
Site Plan
Site plan showing property boundaries, dimensions, building footprint, setbacks, parking layout, access routes, and existing utilities
Zoning Verification Letter
Zoning verification letter from Columbus Planning confirming property zoning district and ADU eligibility under current zoning code
Structural Engineering Plans
Structural engineering plans and calculations by a licensed Ohio professional engineer for foundation, framing, and load-bearing elements
Mechanical and Utility Plans
Plans showing water supply, sewer, electrical, gas connections and separate metering for water, electric, and gas services to ADU
Proof of Property Ownership
Current property deed or title commitment showing applicant ownership of subject property
Permit Process
Follow these steps to submit your permit application through City of Columbus Department of Building and Zoning Services.
- 1
Zoning Eligibility Verification
Obtain zoning verification letter from Columbus Planning confirming ADU is allowed in property zoning district and meets dimensional requirements
You'll need: Zoning Verification Letter, Proof of Property Ownership
- 2
Submit Building Permit Application
Submit complete permit application with architectural, structural, utility plans and all required supporting documentation to Columbus Building and Zoning Services
You'll need: Building Permit Application, Architectural Drawings, Site Plan, Structural Engineering Plans, Mechanical and Utility Plans
- 3
Plan Review and Approval
Columbus Building and Zoning conducts comprehensive plan review for compliance with zoning code, Ohio Building Code, and design standards
- 4
Address Plan Review Comments
Revise and resubmit plans as needed to address any code compliance issues or comments raised during plan review
- 5
Permit Issuance and Payment
Pay all permit fees and receive approved building permit authorizing construction to begin
- 6
Construction Inspections
Schedule and pass required inspections: foundation, framing, electrical, plumbing, mechanical, and final inspection per Ohio Building Code
- 7
Certificate of Occupancy
Receive Certificate of Occupancy from Columbus Building Official upon successful final inspection and code compliance verification
Authority Sources
Data on this page is sourced from official records published by the permitting authority. Always verify requirements directly before submitting.
City of Columbus Department of Building and Zoning Services
Last verified: February 15, 2026
2 sources referenced
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Frequently Asked Questions
- Do I need a adu permit in Columbus?
- Yes. Columbus requires a adu permit for this type of project. Submitting without a permit may result in fines, required removal, or complications when selling your property.
- How long does adu permit approval take in Columbus?
- Processing times in Columbus vary depending on project complexity and current review volume. The process involves 7 steps. Contact Columbus Development Services for current timelines.
- What documents are required for a adu permit in Columbus?
- Columbus requires 7 documents including Building Permit Application, Architectural Drawings, Site Plan, Zoning Verification Letter, and others. See the full list above for details.
- What happens if I build without a adu permit in Columbus?
- Building without a permit in Columbus can result in stop-work orders, fines, required removal of work, difficulty selling your property, and insurance complications. It is strongly recommended to obtain proper permits before starting work.
- Can PermitMagic help prepare my adu permit submission in Columbus?
- Yes. PermitMagic generates a submission-ready packet tailored to Columbus's requirements, including a document checklist, workflow steps, and authority references. Start a permit plan to get your personalized packet.
- How much does a adu permit cost in Columbus?
- ADU permit fees in Columbus typically range from $4,500 to $12,375, depending on project scope. Fees may include building permit, plan review, and technology surcharges. Verify current fees with Columbus.
Related Permits
Other permits in Columbus
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