Illinois Mechanics Lien — Deadlines, Laws, and Filing Guide
Illinois mechanics lien law is governed by the Illinois Mechanics Lien Act (770 ILCS 60). Illinois does not require preliminary notices in most cases, but has strict 4-month filing deadlines. This guide covers all Illinois lien rights for contractors, subcontractors, and suppliers.
Illinois Mechanics Lien Filing Deadline
In Illinois, the deadline to file a mechanics lien is 4 months from the last date of furnishing labor or materials. This applies to contractors, subcontractors, and material suppliers. This is a strict, hard cutoff under the Illinois Mechanics Lien Act.
No Preliminary Notice Required in Illinois
Unlike California, Texas, and Florida, Illinois does not require subcontractors or suppliers to send a preliminary notice before filing a mechanics lien. Subcontractors can file a lien without any prior notice to the owner, subject to the 4-month filing deadline.
Where to File an Illinois Mechanics Lien
Illinois mechanics liens must be filed with the Circuit Court Clerk in the county where the property is located — not with the County Recorder. In Cook County (Chicago), liens are filed with the Cook County Circuit Court Clerk.
Illinois Lien Enforcement Deadline
After filing a mechanics lien in Illinois, the lienor must enforce the lien by commencing a lawsuit within 2 years of the date the lien was filed. Illinois gives lienors 2 years to enforce — much longer than California's 90 days.
Frequently Asked Questions
What is the deadline to file a mechanics lien in Illinois?
In Illinois, the deadline to file a mechanics lien is 4 months from the last date of furnishing labor or materials for most claimants. This is a hard cutoff — missing it permanently eliminates your lien rights.
Do I need to send a preliminary notice before filing a lien in Illinois?
Illinois does not require a preliminary notice to the owner before filing a mechanics lien. However, subcontractors must serve a copy of the filed lien on the property owner within 5 days of filing.
Where do I file a mechanics lien in Illinois?
Illinois mechanics liens are filed with the Circuit Court Clerk in the county where the property is located — not with the County Recorder. In Cook County, file with the Cook County Circuit Court Clerk.