Illinois mechanics lien deadlines

4 deadlines NoticeGuard models for Illinois: what each one counts from, the statute it was read from, and the statute text.

Information, not legal advice. This app reports what the statute says and cites the section it read. It is not legal advice, it does not file anything for you, and it does not tell you what to do.
Verify with the statute or an attorney. Statutes change, and courts reinterpret them. Every deadline in this app comes from a statute read on the date shown next to its citation - that snapshot can go out of date. Missing a mechanics lien deadline can extinguish your claim permanently, so confirm any deadline you are relying on with an attorney licensed in that state before you act on it.
Data verified: statute text retrieved 2026-09-21 to 2026-10-02 (each citation below carries its own date). Rule data from the NoticeGuard app, source commit 22f9300.

Deadlines at a glance

DeadlineCounted fromApplies toStatute
File the claim for lien or bring suit (to preserve priority against third parties)120 days after final completion of the original contractOriginal contractor, Subcontractor, Supplier, Preconstruction service770 ILCS 60 § 7 (a)
File the claim for lien as to the owner, and commence any foreclosure action730 days after final completion of the original contractOriginal contractor, Subcontractor, Supplier, Preconstruction service770 ILCS 60 §§ 7 and 9 7(a); 9 (final sentence)
Subcontractor's written notice to owner90 days after final completion of your own workSubcontractor, Supplier, Preconstruction service770 ILCS 60 § 24 (a)
Notify the owner that you recorded the lien (owner-occupied single-family home)10 days after notice of construction lien recordedOriginal contractor
only when you tick "This is a single-family residence that the owner lives in"
770 ILCS 60 § 7 (d)

Work out a date for Illinois with the calculator

Each deadline, with the statute

File the claim for lien or bring suit (to preserve priority against third parties)

Filed with the county recorder, or an action brought, counted from completion of the contract (or of any extra work/final delivery). Missing this date does not void the lien - it only loses priority against other creditors, encumbrancers, or purchasers who acquire an interest in the meantime.

What it counts from. 120 days after final completion of the original contract.

Applies to. Original contractor, Subcontractor, Supplier, Preconstruction service.

770 ILCS 60 § 7 (a)
Official source · statute text retrieved 2026-09-21

“No contractor shall be allowed to enforce such lien against or to the prejudice of any other creditor or incumbrancer or purchaser, unless within 4 months after completion, or if extra or additional work is done or labor, services, material, fixtures, apparatus or machinery, forms or form work is delivered therefor within 4 months after the completion of such extra or additional work or the final delivery of such extra or additional labor, services, material, fixtures, apparatus or machinery, forms or form work, he or she shall either bring an action to enforce his or her lien therefor or shall file in the office of the recorder of the county in which the building, erection or other improvement to be charged with the lien is situated, a claim for lien...”

If the date is missed (the statute's own terms). The statute states the lien may not be enforced "against or to the prejudice of any other creditor or incumbrancer or purchaser" past this date - a real cost (loss of priority against intervening third parties), distinct from and shorter than the outer deadline against the owner directly (see the sibling rule below).

Also stated next to this deadline.

File the claim for lien as to the owner, and commence any foreclosure action

The outer deadline to record the claim so it remains good against the owner personally, and - confirmed to share the identical anchor and offset - the deadline to commence a foreclosure suit. Both run from completion of the contract (or of extra work/final delivery).

What it counts from. 730 days after final completion of the original contract.

Applies to. Original contractor, Subcontractor, Supplier, Preconstruction service.

770 ILCS 60 §§ 7 and 9 7(a); 9 (final sentence)
Official source · statute text retrieved 2026-09-21

“[§ 7(a)] ...as to the owner may be filed at any time after the contract is made and within 2 years after the completion of the contract, or the completion of any extra work or the furnishing of any extra labor, services, material, fixtures, apparatus or machinery, forms or form work thereunder, and as to such owner may be amended at any time before the final judgment. [§ 9] Such suit shall be commenced or counterclaim filed within two years after the completion of the contract, or completion of the extra or additional work, or furnishing of extra or additional material thereunder.”

If the date is missed (the statute's own terms). Past this date, a claim for lien can no longer be filed even as to the owner (§ 7), and a foreclosure suit can no longer be commenced (§ 9) - this is the true outer bound on the lien, not merely a priority question.

Also stated next to this deadline.

Subcontractor's written notice to owner

Sent to the owner of record (and the lending agency, if known), counted from completion of this subcontractor's own contract with the contractor - not the whole project's completion.

What it counts from. 90 days after final completion of your own work.

Applies to. Subcontractor, Supplier, Preconstruction service.

770 ILCS 60 § 24 (a)
Official source · statute text retrieved 2026-09-21

“Subcontractors, or parties furnishing labor, materials, fixtures, apparatus, machinery, or services, may at any time after making his or her contract with the contractor, and shall within 90 days after the completion thereof, or, if extra or additional work or material is delivered thereafter, within 90 days after the date of completion of such extra or additional work or final delivery of such extra or additional material, cause a written notice of his or her claim and the amount due or to become due thereunder, to be provided to the owner of record or the owner of record's agent or architect, or the superintendent having charge of the building or improvement and to the lending agency, if known...”

If the date is missed (the statute's own terms). Mandatory ("shall") for every subcontractor - protects the subcontractor's right to be paid out of what the owner still owes the contractor. This does not itself record or perfect the lien (that is § 7); it is a separate, real deadline for payment priority.

Also stated next to this deadline.

Notify the owner that you recorded the lien (owner-occupied single-family home)

A contractor improving an owner-occupied single-family residence must give the owner written notice within 10 days after recording the lien. Counted from the recording date, not from completion.

What it counts from. 10 days after notice of construction lien recorded.

Applies to. Original contractor (when you tick "This is a single-family residence that the owner lives in").

770 ILCS 60 § 7 (d)
Official source · statute text retrieved 2026-10-02

“A contractor for improvements of an owner-occupied single-family residence must give the owner written notice within 10 days after recording a lien against any property of the owner. The notice is served when it is sent or personally delivered. If timely notice is not given and, as a result, the owner has suffered damages before notice is given, the lien is extinguished to the extent of the damages. The mere recording of the lien claim is not considered damages. This subsection does not apply to subcontractors, and it applies only to contracts entered into after the effective date of this amendatory Act of the 96th General Assembly.”

If the date is missed (the statute's own terms). In the statute's own words: "If timely notice is not given and, as a result, the owner has suffered damages before notice is given, the lien is extinguished to the extent of the damages." Partial, not total - and the statute adds that "the mere recording of the lien claim is not considered damages," so a late notice that caused no actual loss costs nothing.

Also stated next to this deadline.

Weekend and holiday rollover

NoticeGuard does not model a weekend or holiday extension for Illinois. The dates above are the plain count from the date you enter. Check whether a Saturday, Sunday or holiday changes your date.

What this rule set does not cover

Keep track of the dates

About the NoticeGuard app

NoticeGuard is an app that turns a job's dates into a countdown for each statutory step, shows the statute text each date was read from, exports a calendar file (.ics) and sends reminders 14, 7 and 1 day before each deadline. It tracks and reminds; it does not file anything for you.

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