Winnebago County Property Appraiser & Tax Assessor
Real property appraisal records, parcel search lookup, property tax rates, and assessment protest deadlines for Winnebago County, Wisconsin.
Winnebago County Assessor's Office Information
Winnebago County Appraisal & Assessment Office, Oshkosh, WI 55001
Get Driving Directions ↗Monday - Friday: 8:00 AM - 4:30 PM (Local Time)
Closed on state & federal holidays.
(608) 263-1509
AccessDane / Milwaukee Assessor / Ascent Land Records
Winnebago County Property Tax Calculator
Estimated using Winnebago County's effective tax rate of 1.64% (Assessment ratio: 100%)
Appealing Your Winnebago County Assessment
Must attend Open Book first; file written objection with Board of Review at least 48 hours prior to first meeting.
Under Wisconsin property tax law, property owners in Winnebago County have the legal right to challenge an assessed valuation that exceeds fair market value, is unequally appraised compared to neighboring properties, or contains clerical errors.
Contact the Winnebago County Assessor's Office to review your property record card, verify square footage, and present recent comparable sales (comps).
If informal review does not resolve the valuation, file a written notice of appeal with the Municipal Board of Review (BOR) before the statutory deadline.
Was Your Winnebago County Home Over-Assessed This Year?
Studies show up to 30% to 60% of US residential properties are overvalued by automated municipal algorithms. Protesting your assessment before the statutory deadline can lower your tax bill by an average of $1,100/year.
Winnebago County Homestead Exemptions & Tax Relief
Homeowners in Winnebago County who occupy their home as their permanent primary residence may qualify for property tax reductions under state and local homestead programs:
School Levy Tax Credit and First Dollar Credit automatically applied to tax bills for improved real property.
Wisconsin Homestead Credit provides up to $1,168 for low-to-moderate income residents. Disabled Veterans Property Tax Credit refunds 100% of property taxes for eligible veterans.
Need Deed, Lien, or Title Records for Winnebago County?
While the Property Appraiser values real estate for taxation, official legal property transfers, warranty deeds, mortgages, and marriage records in Winnebago County are maintained by the County Clerk & Recorder.
Frequently Asked Questions
Where is the Winnebago County Property Appraiser office located?
The official Winnebago County property appraisal and tax assessment office is located at Winnebago County Appraisal & Assessment Office, Oshkosh, WI 55001. Operating hours are typically Monday - Friday: 8:00 AM - 4:30 PM (Local Time). You can reach the customer service staff by phone at (608) 263-1509.
What is the property tax rate in Winnebago County, WI?
The average effective property tax rate in Winnebago County is approximately 1.64%. For a home with the median county market value of $270.000, the estimated annual property tax is about $4428 per year.
How do I search for a property or parcel in Winnebago County?
You can look up property record cards, assessed valuations, ownership history, and parcel boundary maps online through the official Winnebago County parcel search portal: https://winnebagocountywi.gov/assessor/parcel-search.
When is the deadline to appeal my property assessment in Winnebago County?
Property valuation protests and appeals in Winnebago County must be submitted by: Must attend Open Book first; file written objection with Board of Review at least 48 hours prior to first meeting. Appeals are formally reviewed and heard by the Municipal Board of Review (BOR).
How does the Homestead Exemption work in Winnebago County?
School Levy Tax Credit and First Dollar Credit automatically applied to tax bills for improved real property. Additional exemptions are available for senior citizens (65+) and disabled military veterans (Wisconsin Homestead Credit provides up to $1,168 for low-to-moderate income residents. Disabled Veterans Property Tax Credit refunds 100% of property taxes for eligible veterans.).
Adjacent & Neighboring County Appraisers
County Overview
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