Can a subcontractor file a lien without a written contract in Illinois?
Last reviewed July 5, 2026
Yes, a subcontractor can file a lien in Illinois without a written contract, but they must provide evidence of the work performed and the value of that work. Oral contracts or implied agreements can support the lien claim.
Key points
- Subcontractors can lien without a written contract in Illinois.
- Evidence of work done is needed for the lien.
- Oral contracts can be valid for lien claims.
In Illinois, the Mechanics Lien Act allows subcontractors to file liens even if there is no written agreement. However, they must clearly show they completed the work and its value. This can include invoices, correspondence, or other proof that indicates an agreement was made, even if it was not in writing.
How Alloovium helps
Alloovium can help track and manage lien documentation and compliance with state regulations.
See how it worksRelated questions
- 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?
- What is the difference between a conditional and unconditional lien waiver 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.