Who can file a mechanics lien in Illinois?
Last reviewed July 5, 2026
In Illinois, any contractor, subcontractor, laborer, or material supplier who has provided work or materials for a property can file a mechanics lien. The lien must be filed within four months of the last date of work or materials provided.
Key points
- Contractors, subs, laborers, and suppliers can file liens.
- Liens must be filed within four months of last work or materials.
- Notice requirements apply before filing a lien.
Before filing a mechanics lien in Illinois, the claimant must send a notice to the property owner within 60 days of the last day of work or materials provided. Tracking these timelines is important to keep lien rights intact.
How Alloovium helps
Alloovium helps track deadlines and obligations related to mechanics liens and other compliance requirements.
See how it worksRelated questions
- Can a subcontractor file a lien without a written contract in Illinois?
- Do I need to send a preliminary notice before filing a lien in Illinois?
- How long does a mechanics lien last in Illinois?
- How much retainage can be withheld on a construction project in Illinois?
- What are the prompt payment rules for construction in Illinois?
- What is the deadline to file a mechanics lien in Illinois?
General information for US construction professionals — not legal advice. Lien deadlines, retainage caps and notice rules vary by state; verify with the state statute or a construction attorney.