This page helps users handle a Property Search in LaSalle County, Illinois, by pointing them to the official tools used for assessor records, property tax inquiry, and parcel map review.
The main starting point is the LaSalle County Assessor online property search. For tax bill and payment-related details, users may also need the Illinois Property Tax Public Inquiry service used for LaSalle County.
LaSalle County Assessor property search
The LaSalle County Assessor provides an online property search for public record research. The search is intended for research use, and information should be verified with the Assessor's Office before relying on it for a dispute or formal decision.
Use the LaSalle County Assessor property search to look up assessment-related property information and view or print property record cards.
The assessor search notes that the information is updated twice per year: once after the Supervisor of Assessments publication and once after Board of Review adjustment.
Verify before relying on results: the online assessor data may contain errors and should be checked with the Assessor's Office when accuracy matters.
LaSalle County property tax inquiry
For property tax bill information, use the Illinois Property Tax Public Inquiry for LaSalle County. This service is provided for user convenience and includes a disclaimer about data accuracy, completeness, and updates.
The Treasurer's online property tax inquiry allows users to complete a parcel inquiry or mobile home inquiry. It is useful when the property search need involves taxes, bill status, or mobile home tax information.
If a record indicates that taxes were sold at tax sale, the tax inquiry notice directs users to call the county clerk for redemption or recovery amounts.
GIS property maps
LaSalle County also provides GIS property maps for locating and identifying parcels. The GIS map is for reference use and is not a legal description.
Use LaSalle County GIS property maps when a parcel location, map view, or spatial reference is needed alongside assessor or tax information.
Assessment records and exemptions
The LaSalle County Assessments office handles property assessment information, assessment publications, GIS property maps, exemptions, and assessment-related questions.
The county explains that Illinois property assessments generally use 33 1/3% of fair market value, excluding farmland. A property's final tax amount depends on assessed value and the funding needs of local taxing districts.
For homeowner relief, LaSalle County lists exemption programs such as the General Homestead Exemption, Senior Homestead Exemption, Low-Income Senior Citizens Assessment Freeze Homestead Exemption, disability-related homestead exemptions, veterans exemptions, returning veterans exemption, and homestead improvement exemption.
Review the LaSalle County exemptions page for eligibility details and application notes. First-time exemption applications must be notarized and accompanied by photo ID, except that the Senior assessment freeze form no longer needs to be notarized.
Recorder records and document searches
Property searches sometimes lead to recorded land documents. LaSalle County Recorder online records are separate from assessor and tax records.
The county lists three online record search options:
- Laredo provides account-based access for regular users and includes document images.
- Tapestry EON is an on-demand option for occasional searches and includes image viewing.
- DirectSearch provides basic recorded document information at no cost but does not provide images.
Use the LaSalle County Records Online page for recorder search options, document image access, and certified copy information.
Property tax payment details
When a property search leads to a tax payment, LaSalle County Treasurer payment options include payment through participating county banks and financial institutions through September 9, 2026, check payment by mail or drop off, online payment, and phone payment.
The Treasurer lists these online and phone payment fees:
| Payment type | Fee |
|---|---|
| Credit card | 2.40% per transaction, with a $2.00 minimum convenience fee |
| eCheck | $1.00 flat convenience fee per parcel |
| Pay by phone | Third-party service fees apply; phone payment is available at (815) 393-2688 |
The Treasurer states that real estate tax due dates are July 15, 2026 and September 9, 2026. Mobile home taxes are due June 19, 2026.
For online payment, users may search by PIN, name, or address through the LaSalle County Treasurer online payment portal.
LaSalle County property search contacts
Use these offices when online records are unclear, when verification is needed, or when the issue involves taxes, assessments, maps, exemptions, or back taxes.
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LaSalle County Assessment Office, 707 E Etna Road, Ottawa, IL 61350
Phone: (815) 434-8233
BOR phone: (815) 617-4200 -
LaSalle County Treasurer, 707 East Etna Road, Room 153, Ottawa, IL 61350
Phone: (815) 434-8219 option 4 - LaSalle County Collector mailing address, James L. Spelich, LaSalle County Treasurer, PO Box 1560 – 707 E. Etna Road, Ottawa, IL 61350
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Back taxes
Phone: (815) 434-8202 -
LaSalle County Recorder's Office
Phone: (815) 434-8226
Common questions
Where do I start a LaSalle County property search?
Start with the LaSalle County Assessor online property search for assessment records and property record cards. Use the tax inquiry service when the question involves tax bill information or mobile home tax inquiry.
Can I rely on the online assessor result by itself?
The assessor search is for research use. If the information will be used for an argument, appeal, or formal decision, verify it with the Assessor's Office first.
How often is the assessor search updated?
The assessor search states that information is updated twice per year: after the Supervisor of Assessments publication and after Board of Review adjustment.
Where can I find a parcel map?
Use the LaSalle County GIS property maps for parcel location and map reference. The map information is not a legal description.
Who handles back taxes in LaSalle County?
Prior year taxes sold at the Annual Tax Sale are handled through the County Clerk. For back taxes, call (815) 434-8202.
Can I search recorded property documents online?
Yes. LaSalle County Recorder online records are available through Laredo, Tapestry EON, and DirectSearch. Laredo and Tapestry provide document images, while DirectSearch provides basic recorded document information without images.