Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 23, 2026 and September 25, 2026.
Ottawa, Illinois, in LaSalle County, has about 19,000 residents (2024 Census Bureau estimate). The title to a parcel in Ottawa is in the deed records of the County Recorder and its taxable value is set by the Supervisor of Assessments; what is built on it is a matter for the city. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, city permits and records, evictions and court cases, records requests and common questions.
Related guides: Ottawa public records, LaSalle County property records, Ottawa arrest records, Ottawa warrants, Ottawa inmate search, Ottawa police reports, Illinois arrest records and Illinois inmate search.
Deeds, Mortgages and Liens in Ottawa
Who owns a parcel in Ottawa and what it sold for are in the deed records of the County Recorder, with every lien or mortgage against the land.
SearchSystems opened and checked the County Recorder's page at lasallecountyil.gov/456/Recorder-of-Deeds (page title: Recorder of Deeds | LaSalle County, IL), phone 815-434-8226, 707 E Etna Road Ottawa, IL 61350, Monday through Friday 8 am to 4:30 pm, which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Ottawa
What a parcel in Ottawa is taxed on is the business of the Supervisor of Assessments, which also keeps the parcel maps. Illinois assesses property at a third of market value; Cook County reassesses one third of the county each year and the rest of the state runs on four-year cycles.
SearchSystems opened and checked the Supervisor of Assessments' page at lasallecountyil.gov/194/Assessments (page title: Assessments | LaSalle County, IL), phone 815-434-8233, which answered when SearchSystems opened it on September 23, 2026.
Permits and City Records in Ottawa
Building permits, zoning and code cases are the city's own. For Ottawa, SearchSystems opened and checked the city hall page at cityofottawa.org (page title: Ottawa, IL), which answered when SearchSystems opened it on September 25, 2026.
Evictions and Court Cases About Land in Ottawa
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Circuit Court of LaSalle County, and the file is public unless sealed.
Asking a County Office for a Record
Under the Illinois Freedom of Information Act a county office must answer a request within 5 business days, with one 5-day extension, and it may charge copying only after the first 50 pages. The county records request page SearchSystems verified is at lasallecounty.com/i-want-to/request/foiapublic-records (page title: FOIA/Public Records).
Frequently Asked Questions
Who records deeds in Ottawa?
The County Recorder, at lasallecountyil.gov/456/Recorder-of-Deeds, phone 815-434-8226. Deeds, mortgages and liens on land in Ottawa are filed there, and the Supervisor of Assessments (lasallecountyil.gov/194/Assessments) has the assessment records.
Who sets the assessed value of a property in Ottawa?
The Supervisor of Assessments, whose page SearchSystems verified is at lasallecountyil.gov/194/Assessments.
Where are evictions from Ottawa filed?
In the Circuit Court of LaSalle County. The file is public unless the court seals it.
How is property assessed in Illinois?
Illinois assesses property at a third of market value; Cook County reassesses one third of the county each year and the rest of the state runs on four-year cycles.
Is this the official Ottawa website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.