Columbus ADU Permit Fees & Cost Calculator
Columbus appears to allow ADUs and uses its general development fee schedule for permits, but the exact ADU-specific fee total depends on project valuation, scope, and whether separate utility connections are needed. The most reliable fee evidence found is the city’s 2026 combined development-related fee schedule, which shows permit fee categories for new construction, additions, and accessory structures, but it does not provide a single ADU-only fee.
Free ADU fee calculator
Estimate local ADU fees
Step 1 of 5: Location
The calculator uses staged city data from the ADUFee database with visible confidence levels and dated source tracking.
Fee overview
The official fee schedule excerpt is partially truncated in the provided search result, so exact dollar amounts for the relevant permit line items could not be verified here.
Non-official sources mention ADU permit ranges and utility fees, but those figures should not be treated as authoritative without city confirmation.
ADU zoning rules and permit classification can affect which permit line item applies, so the city may categorize an ADU differently depending on whether it is detached, attached, or internal.
The project is a standard residential ADU in Columbus and would be processed under the city’s normal building permit framework rather than a special ADU-only fee program.
Any utility charges, if applicable, are separate from building permit fees and depend on the specific service connection work required.
Because the official fee schedule excerpt did not expose a clearly readable ADU-specific price, numeric fee fields are left null unless directly supported by the source.
FAQs
Are Columbus ADU fee estimates official?
No. ADUFee.com provides planning estimates only. Final fees are set by the city, utility providers, school district, and other agencies.
What sources are used for Columbus?
The database stores city, state, utility, school, county, and other source links where available. Each estimate should still be verified locally.
Can ADU fees vary within Ohio?
Yes. Permit, utility, school, inspection, and impact fees can vary by jurisdiction, parcel, project size, utility provider, and local interpretation.