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Illinois Preliminary Notice Guide

A Quick Reference for Contractors, Subcontractors & Material Suppliers

Introduction

Illinois mechanics lien laws include important notice requirements that vary depending on the type of construction project and the party seeking lien rights. While general contractors typically have different notice obligations than subcontractors and suppliers, understanding Illinois’ notice requirements is essential to preserving your right to payment.

Whether you’re working on a residential, commercial, or industrial construction project, complying with Illinois’ Mechanics Lien Act can help protect your legal right to recover unpaid amounts.

Who Must Send a Preliminary Notice? Not Required

A preliminary notice is not required on most projects in Illinois, however, sub-tier parties working on a single-family owner-occupied project must provide notice to the owner within 60 days of starting the project. To retain the right to a mechanics lien Illinois sub-tier parties must serve a Notice of Intent to Lien within 90 days of last furnishing.

Key Deadlines

Requirement

Deadline

Preliminary Notice

Varies by project type

Subcontractor Notice

Generally within 90 days after last furnishing labor or materials

Mechanics Lien Filing

Generally within 4 months after completion of work – private

Lien Enforcement

Generally within 2 years after filing

Frequently Asked Questions

Does Illinois require a preliminary notice?

Illinois has notice requirements that vary depending on the project and claimant.

Can subcontractors file a mechanics lien?

Yes. Qualified subcontractors may preserve lien rights by complying with statutory notice requirements.

Can material suppliers file a mechanics lien?

Yes. Material suppliers may file mechanics liens when they comply with Illinois law.

When must a mechanics lien be filed?

Generally within 4 months after completion of the claimant’s work to preserve full lien rights.

Is a Notice of Intent required?

Yes, in some instances.

Can Caprenos prepare my Illinois notices?

Yes. Caprenos prepares Illinois lien notices and tracks important filing deadlines.

Why should I monitor deadlines?

Illinois has multiple notice and filing requirements that are strictly enforced.

How Caprenos Can Help

Caprenos helps contractors, subcontractors, suppliers, equipment providers, and design professionals prepare Illinois lien notices, monitor filing deadlines, and protect their payment rights throughout Illinois.

Disclaimer: All timelines, deadlines, and legal requirements provided are for informational purposes only, may vary based on applicable law and project-specific circumstances, and should always be confirmed with a qualified attorney.