City of Oak Creek
Home MenuAssessor
2026 Real Estate Assessed Values
2026 Notices of Assessment were mailed April 7, 2026.
For a searchable listing of proposed 2026 assessed values of real estate properties, please view either the assessed value listing sorted by street number, or the assessed value listing sorted by parcel ID number.
For information about your property assessment, including historical data, please visit our Land Records Portal.
Need to change your address?
Email the Assessor at assessor@oakcreekwi.gov to make updates for assessment notices and tax bill mailings.
Questions about your Notice of Assessment? Please visit the Open Book page for more information.
Important 2026 Dates in the Assessment Process
Board of Review| Date | Event |
| January 1 | Assessment Date: All property is assessed as it existed on this date. |
| March 1 | Last day to file exemption request forms, and request for review forms. |
| April 7, 2026 | Assessment notices mailed to property owners and assessment roll available for inspection. |
| April 13 - May 1, 2026 | Open Book Appointment Period |
| June 2026 - TBD | Board of Review |
Learn about the Oak Creek Assessors
Assessor’s Duties & Responsibilities
The City Assessor is a State certified professional who determines the value of all property in the City. Those values are then used to calculate property taxes across all taxing jurisdictions.
The Assessor is not involved in the billing or collection of property taxes. Questions about property tax collection should be addressed to the Treasurer's office.
Main functions of the Assessor's office include:
- Holds annual open book sessions for property owners and presents assessments at the Board of Reviews hearings
- Inspects and reviews all properties that were issued permits for the current year and any partial assessments from the prior year and determine values
- Prepares and submits Assessor's Final Report to the Department of Revenue
- Provides assessment and owner information to citizens, developers, real estate professionals, and other interested parties
- Updates information in the property database
Contact us with questions about a property, assessments, or related topics. You can also use the Property Information Lookup tool.