Very important please read: all first-time applications must be notarized and accompanied by a photo ID. Originals must be submitted. We will not accept photocopies, faxes, or email copies. Senior assessment freeze (PTAX-340) no longer needs to be notarized.
Notice to LaSalle County Residential Property Owners
The LaSalle County Assessment Office is going to digital Property Record Cards. You may receive a knock on your door from your local township assessor and or their field workers to update pictures and property information of all LaSalle County properties. This does not necessarily mean that your assessment will be increased. Per Statute (35 ILCS 200/9-155) every property should be looked at every four years. If you have any questions please feel free to contact the LaSalle County Assessment Office at 815-434-8233.
How is Property Assessed
- Residential Property
- Farm Property
- Forestry Management Plan Properties
- Conservation Stewardship Properties
- Commercial & Industrial Property
- Developers Property
- Model Homes
Assessment Complaint Rules & Procedures
Any person or corporation desiring to complain to the Board for the reason they feel their property is incorrectly assessed, shall file a complaint, in writing and attested to by an Affidavit of Affirmation of the complaint, or by their lawful agent within 30 days from the date of publication of the assessment for the township wherein the property lies.