Skip to content
Oakclause

Mechanics Lien Deadlines in Illinois

In Illinois, a contractor must record a lien within 4 months after completion to bind third parties (2 years as against the owner), subcontractors must serve a 90-day notice, and suit must be filed within 2 years after completion.

Last checked . General information, not legal advice.

Illinois at a glance

Deadline to record lien
4 months (against third parties)
As against the owner, a claim may be filed within 2 years after completion of the contract.
Preliminary notice required
Yes in some cases (90-day notice, subcontractors)
No notice at job start is required, but subcontractors must serve written notice within 90 days after completing their work.
Deadline to enforce lien
2 years after completion
Counted from completion of the contract or of extra work.

Sources

Last checked

The rules in Illinois

How long does a contractor have to file a mechanics lien in Illinois?

Deadline to record lien in Illinois: 4 months (against third parties). As against the owner, a claim may be filed within 2 years after completion of the contract.

Is a preliminary notice required before filing a mechanics lien in Illinois?

Yes in some cases (90-day notice, subcontractors). Preliminary notice required in Illinois: yes in some cases (90-day notice, subcontractors). No notice at job start is required, but subcontractors must serve written notice within 90 days after completing their work.

How long do you have to foreclose a mechanics lien in Illinois?

Deadline to enforce lien in Illinois: 2 years after completion. Counted from completion of the contract or of extra work.

Where do the Illinois mechanics lien deadlines come from?

The rules above come from 770 ILCS 60/7, 770 ILCS 60/9 and 770 ILCS 60/24. Each source is linked on this page. We last checked them in October 2026.

Good to know

The 90-day subcontractor notice may be sent by registered or certified mail, by a nationally recognized delivery company with tracking, or by personal service (770 ILCS 60/24).

What this means in practice

Deadlines often differ by role. The period for a general contractor who dealt directly with the owner can be different from the period for a subcontractor or supplier, and residential projects can have their own rules. Check which category fits before relying on a single number.

The event that starts the clock matters as much as the length of the period. Depending on the statute, it can be the last day labor or materials were furnished, completion of the project, or the recording of a notice of completion or commencement by the owner. Keeping dated records of the last work performed helps establish the start date.

Recording a lien is not the end of the process. If the debt is not paid, the claimant generally has to file a lawsuit to foreclose the lien within the enforcement period, or the lien expires. When the debt is paid, the owner will usually want a signed lien release recorded so the title is clear.

General information, not legal advice. Laws change, and cities can add their own rules, so check the current statute before you rely on it.