Boone County, Illinois Tax Assessors' Office
Boone County Supervisor of Assessments 1208 Logan Avenue
Belvidere, Illinois 61008
815-544-3365 (Fax) Where is the Boone County Tax Assessor's Office?
What can the Boone County Assessor's Office do for me?
The Boone County Tax Assessor's Office oversees the appraisal and assessment of properties as well as the billing and collection of property taxes for all taxable real estate located in Boone County.
Contact the assessor's office if you need help with paying your property taxes, applying for a homestead exemption or other tax exemption, reporting upgrades to your home, appealing your property tax assessment, or verifying your property records.
Submitting a Boone County property tax appeal
If you believe that your house has been unfairly overappraised (i.e. appraised at a value higher than the true market value of the property), you can attempt to get your home re-appraised at a lower value by contacting the Assessor's Office to submit a property tax appeal.
You will have to submit a form describing your property and sufficient proof that it is overassessed, including valuations of similar homes nearby as evidence. If your appeal is accepted, your home assessment (and property taxes) will be lowered as a result.
If you would like to appeal your property, call the Boone County Assessor's Office at (815) 544 2958 and ask for a property tax appeal form. Keep in mind that property tax appeals are generally only accepted in a 1-3 month window each year.
For more information and example appeals, see how to appeal your property taxes.
Useful Boone County Facts:
The median home value in Boone County is between $169,253.00 and $179,547.00. Property tax rates are based on property values.
How can I contact Boone County?
You can try contacting the Boone County local government directly with any issues the Assessor's Office can't solve. In many counties, certain property records such as deeds are kept in the county courthouse or county archives instead of at the tax assessors' office.
The county seat for Boone County is located in the Courthouse in Belvidere, which is where the Boone County Assessors' Office is also located. You can direct your general inquiries to Boone County with the contact info listed below.
Boone County Phone Number
Boone County Fax Number
Boone County Courthouse Address
Courthouse
1212 Logan Avenue
Belvidere, IL 61008
Useful Boone County Links:
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Boone County Assessors' Office Homepage
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Boone County Government Homepage
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Property Assessments
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Boone County Tax Records
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Property Tax Search Tool