770 ILCS 60/24
Illinois subcontractors and suppliers must serve a 90-Day Notice under 770 ILCS 60/24 within 90 days of last furnishing to preserve lien rights. Owner-occupied residential work adds a 60-day Notice of Identification under § 60/5 — without it, the sub or supplier has no lien at all.
Subcontractors and material suppliers who did not contract directly with the owner must serve a 90-day notice on the owner and the lender. Direct contractors do not need to serve preliminary notice but must record their lien within 4 months for non-residential and 90 days for residential.
Within 90 days of last furnishing labor or materials. Owner-occupied single-family or duplex residential projects under § 60/5 also require a 60-day Notice of Identification at the start of work.
Personal service or certified mail with return receipt requested. Service must be documented for any later foreclosure of lien.
Required for subcontractors and material suppliers on private Illinois construction. Residential single-family/duplex projects under 770 ILCS 60/5 have additional 60-day notice rules.
Read § 60/24 on the official statute site
Within 90 days of the date of last furnishing labor or materials to the project. The clock runs from last furnishing — not first.
On owner-occupied single-family or duplex residential projects, subcontractors and suppliers must also serve a 60-day Notice of Identification under 770 ILCS 60/5. Failure forfeits all lien rights on residential work.
With the County Recorder in the county where the property is located. Suit to foreclose must be filed within 2 years of last furnishing.
This page is general information about Illinois's Illinois 90-Day Notice (Subcontractor's Notice and Claim for Lien) (770 ILCS 60/24) and is not legal advice. Deadlines and service rules change — verify current requirements with a licensed Illinois construction attorney before relying on them.