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Illinois Mechanics Lien Deadlines

The three deadlines every Illinois subcontractor must track — preliminary notice, lien filing, and enforcement. Values below are reproduced from our verified 50-state reference; confirm with a Illinois construction attorney.

Preliminary Notice

StateIllinois
Preliminary Notice?Yes
Deadline90 days from last furnishing
NotesMust serve owner with copy of lien

Lien Filing

StateIllinois
Lien Filing Deadline4 months

Lien Enforcement

StateIllinois
Lien Enforcement Deadline6 months
Never miss these dates. All three deadlines start from your first or last furnishing date. A contested date can blur your entire timeline. VoiceLogPro timestamps every day of work from a 60-second voice note — so your furnishing dates are documented, not argued. Try the Lien Deadline Calculator →
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See all states in the 50-state lien deadline cheat sheet. Nearby: Alabama · Alaska · Arizona · Arkansas · California · Colorado · Connecticut · Delaware.

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This is general information, not legal advice. Lien laws change and vary by project type. Verify every deadline with a licensed construction attorney in your state before relying on it. Data current as of 2026-07-21. Compiled reference: VoiceLogPro 50-state lien deadline reference · Download data (CC BY 4.0)