Administrative overview · FIPS 55139
Winnebago County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
Municipal Fallback
This profile identifies a handoff outside the county’s ordinary structural permitting lane.
Required jurisdiction check
Confirm the controlling local or state authority before filing.
The record is marked Municipal Fallback. That means the county profile should be treated as a routing brief: incorporated municipalities, a state building department, or a state fire marshal may control plan review, permits, and inspections. Contact the named agency below and verify the parcel’s jurisdiction before paying a fee or scheduling field work.
Responsible agency
City of Oshkosh Inspection Services Division
For a project in or near Winnebago County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
920-236-5050
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Oshkosh City Hall, Inspection Services Division, Room 205, 215 Church Avenue, Oshkosh, WI 54903
Operating hours
Monday-Friday, 7:30 AM-4:30 PM Central; commercial contractors are encouraged to schedule an appointment
Review expectation
Oshkosh's delegated commercial plan-review partner guarantees a 15-day turnaround after a complete submission and fee payment. A general residential permit-review timeline is not published.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
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
Frequently asked questions for Winnebago County
Who handles permitting for this jurisdiction?
This record is marked Municipal Fallback. Confirm whether a city, state agency, or other local authority controls the parcel before filing.
How should I begin an application?
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact 920-236-5050.
How long might review take?
Oshkosh's delegated commercial plan-review partner guarantees a 15-day turnaround after a complete submission and fee payment. A general residential permit-review timeline is not published.
How are inspections scheduled?
Schedule, cancel and review inspections through the Oshkosh Evolve Public portal or call the automated Inspection Request Line at 920-236-5128. Provide the permit number or project address and nature of work, inspection type, building-access instructions, company or homeowner name and phone number. The permit card must be posted before excavation or construction; work may continue if an inspection is not performed within two business days after the project is ready. A $100 reinspection fee applies.
Which codes and exemptions should I review?
Winnebago County issues county zoning, sanitary and erosion-control permits in the towns of Algoma, Neenah, Nekimi and Omro and throughout rural unincorporated shoreland areas, but town and municipal inspectors issue general building permits. As the county-seat fallback, Oshkosh enforces Municipal Code Chapters 7 building, 11 electrical, 16 housing, 20 plumbing and 30 zoning; Wisconsin Uniform Dwelling Code SPS 320-325 for one- and two-family dwellings and accessory buildings; the 2017 NEC with SPS 316 amendments; Wisconsin Plumbing Code SPS 380-387; and the 2015 International Building Codes with Wisconsin SPS 361-366 amendments for commercial and multifamily buildings. Oshkosh does not require a permit for interior painting or wallpapering, flooring, replacing a faucet, a window-mounted air-conditioning unit, window-sash-only replacement, or pouring a concrete sidewalk no more than four feet wide. Most other alterations and replacements are expressly permitted work, including cabinets and drywall, roofing and siding, full windows and doors, detached structures, decks, fences, patios, driveways, pools, light fixtures, plumbing fixtures and HVAC equipment. County zoning likewise does not require a zoning permit for interior remodeling, replacement windows, siding or roofing shingles, though local building permits may apply.