Illinois Mechanic Lien: The Two Deadlines Subcontractors Race

Most Illinois subcontractors know the calendar. Serve the 90-day notice, record the lien within four months of the last day of work, and file suit within two years. Those dates are real, and missing them is fatal. But for a subcontractor who did not contract directly with the owner, the calendar is only half the race.

There is a second deadline, and it is not printed on any statute or calendar. It is the day the owner pays the general contractor. Under the Illinois Mechanics Lien Act, a subcontractor's lien reaches only the money the owner still owes the contractor at the time the owner learns of the subcontractor's claim. Once the owner has paid the contractor in full, the fund the subcontractor was racing toward can be empty, even though every calendar deadline is still weeks or months away.

This article explains both clocks, why they run at the same time, and why serving the Section 24 notice early is often the single most valuable thing a subcontractor can do.

The First Deadline: The Calendar

The visible deadlines come straight from the statute. A subcontractor or supplier without a direct contract with the owner has to clear three of them.

• 90-day notice. Under 770 ILCS 60/24, the subcontractor must serve written notice on the owner of record, the owner's agent or lender if known, within 90 days after the last day it furnished labor or materials.
• 4-month recording. Under 770 ILCS 60/7, the claim for lien must be recorded with the county recorder within four months of that last day to be enforceable against third parties such as buyers and lenders.
• 2-year foreclosure. Under 770 ILCS 60/9, a foreclosure complaint must be filed within two years of the last day of work, or the lien expires.

These are hard dates. A subcontractor who reads the subcontractor lien deadlines and serves and records on time has done what the statute asks. The problem is that doing everything the calendar requires does not guarantee there is any money left to collect.

The Second Deadline: The Money

The hidden deadline lives in 770 ILCS 60/27. That section limits what the owner owes a subcontractor to the unpaid balance due the general contractor at the time the owner is notified of the subcontractor's claim. In plain terms, the subcontractor's lien does not attach to the property in the abstract. It attaches to whatever the owner still owes the contractor when the owner gets the notice.

That single rule changes everything about timing. The four-month recording window measures time. Section 27 measures money, and the money runs out on its own schedule, controlled by the owner and the contractor, not by the subcontractor. Every draw the owner pays to the general contractor shrinks the fund. By the time the subcontractor is worried enough to record a lien, the owner may have already paid the contractor in full.

A subcontractor can be perfectly on time and still collect nothing, because the deadline that mattered was the day the owner paid the contractor, not the day the lien was due.

Why Illinois Is an Unpaid-Balance State for Subcontractors

It helps to separate two kinds of lien claimants. A direct contractor, the party that signed the contract with the owner, can claim a lien for the full contract price under 770 ILCS 60/1. Its lien is measured by what the owner agreed to pay for the work.

A subcontractor's lien is different. It is derivative. The subcontractor never dealt with the owner, so the law does not give it a claim for the full value of its own work against the property without limit. Instead, Section 27 ties the subcontractor's recovery to the unpaid balance the owner still owes up the chain. That is the defining feature of an unpaid-balance system: the size of the subcontractor's invoice does not set the ceiling. The unpaid contract fund does.

This is why two subcontractors owed the exact same amount can have completely different outcomes. The one who served notice while the owner still held back $150,000 has a fund to lien against. The one who waited until the owner paid the contractor out has a valid, timely, and worthless lien.

How the Two Clocks Interact

Three Illinois decisions show how the calendar and the money run side by side, and how often the money clock wins.

Weather-Tite, Inc. v. University of St. Francis

In Weather-Tite, Inc. v. University of St. Francis, 233 Ill. 2d 385 (2009), the subcontractor's claim was brought home to the owner, and the unpaid balance was still there to be reached. The notice did its job: it fixed the owner's exposure while money remained in the fund. The case stands for the point that the notice is the event that protects the subcontractor against the owner, which is exactly why the timing of that notice matters so much.

Doors Acquisition, LLC v. Rockford Structures Construction Co.

In another line of cases, the contractor's sworn statement did not show the subcontractor as unpaid, the subcontractor served no independent Section 24 notice, and the owner paid the contractor in full. When the subcontractor later tried to enforce a lien, there was no unpaid balance left, and the owner was entitled to rely on what it had been told. The subcontractor's silence, not a missed calendar date, sank the claim.

Knickerbocker Ice Co. v. Halsey Bros. Co.

In a third pattern, the contractor's sworn statement understated the subcontractor's balance. The owner withheld the smaller listed amount and paid the contractor the rest. When the subcontractor filed for the full amount it was actually owed, the lien was limited to the smaller figure the owner had been given. Without an independent notice correcting the record, the subcontractor was bound by the contractor's understatement.

The thread through all three is the same. The subcontractors who put the owner on direct notice while money remained had something to collect. The ones who relied on the contractor, or waited, were measured against a fund that was already gone.

The Sworn Statement Is the Owner's Brake

The reason the fund disappears so cleanly is that Illinois gives the owner a way to pay safely. Under 770 ILCS 60/5, before paying the general contractor the owner is to require a sworn statement listing every subcontractor and supplier and the amount owed to each. An owner who demands that statement and pays in reliance on it is generally protected to the extent of the listed amounts.

That protection is what makes early notice so important to the subcontractor. The sworn statement is written by the general contractor, which means a subcontractor that has been omitted or understated is invisible to the owner. We cover that dynamic in depth in our guide to sworn statements and double payment. The Section 24 notice is the subcontractor's independent channel to the owner. It does not depend on the contractor telling the truth. It puts the claim in front of the owner directly, and it fixes the unpaid balance the owner must hold back.

Serve Early: The One Move That Protects the Fund

If a subcontractor takes one thing from Section 27, it is this: serve the notice early, not at the last legal moment. The 90-day window in 770 ILCS 60/24 sets the outside limit, but waiting until day 89 means waiting while the owner pays draw after draw to the contractor. Each draw lowers the ceiling on the lien.

Serving the notice at the start of the job, or as soon as payment slows, puts the owner on notice while the fund is full. It is legal, it is common, and on a troubled project it is the difference between a lien backed by real money and a lien backed by an empty fund. Because how the notice is served can decide whether it counts at all, follow the statutory methods in our guide on how to serve a Section 24 notice, and keep the proof of service in your file.

The practical sequence for a subcontractor who senses trouble is straightforward. Serve the Section 24 notice now, by certified mail or a tracked carrier, to lock in the balance. Track the recording and foreclosure deadlines so the calendar clock never runs out either. And do not assume the general contractor's sworn statement is protecting you, because it usually is not.

What This Means If You Are the Owner

The same rules read very differently from the owner's chair. An owner who demands a sworn statement before every draw, withholds the amounts it shows, and pays carefully can pay the general contractor and still be protected against most subcontractor claims. An owner who pays the contractor on a handshake, without sworn statements, can lose that protection and face liens for balances it thought were covered.

For owners, the lesson is the mirror image of the subcontractor's: the sworn statement is not paperwork. It is the document that decides whether paying the contractor also pays off the subcontractors, or whether the property stays exposed to liens for work the owner believed was already paid for.

Bottom Line

An Illinois subcontractor is always racing two clocks. The calendar clock, 90 days to notice, four months to record, two years to foreclose, is the one everyone watches. The money clock, the unpaid balance the owner still owes the contractor under 770 ILCS 60/27, is the one that quietly decides whether the lien is worth anything. The owner controls when that second clock runs out, and it usually runs out the day the owner pays the contractor in full.

The subcontractor's best defense is to make the two clocks line up by serving the Section 24 notice early, while the fund is still full. If you are a subcontractor watching payment slow on an Illinois project, or an owner trying to pay safely, contact Emalfarb Law LLC. We handle Illinois construction payment disputes from both sides of the chain.

Frequently Asked Questions

What are the two deadlines a subcontractor faces on an Illinois mechanic lien?

The first is the calendar deadline. Under 770 ILCS 60/24, a subcontractor with no direct contract with the owner must serve a written notice within 90 days of its last day of furnishing labor or materials, and under 770 ILCS 60/7 the lien must be recorded within four months of that last day to be enforceable against later purchasers and lenders. The second deadline is not on any calendar. Under 770 ILCS 60/27, a subcontractor's lien reaches only the amount the owner still owes the general contractor when the subcontractor's claim is brought home to the owner. The moment the owner pays the contractor in full, that fund can drop to zero. A subcontractor can sit comfortably inside the four-month window and still collect nothing because the money it was racing for is already gone.

Is Illinois an unpaid-balance lien state for subcontractors?

For subcontractors, in practical effect, yes. A direct contractor who deals with the owner can claim a lien for the full contract price under 770 ILCS 60/1. A subcontractor's lien is derivative and is measured by what the owner still owes up the chain. Under 770 ILCS 60/27, the owner is liable to the subcontractor only to the extent of the unpaid balance due the general contractor at the time the owner is notified of the subcontractor's claim. Illinois protects an owner who pays correctly against sworn statements, so a subcontractor who waits until the owner has paid the contractor out may find the available fund exhausted. The unpaid balance, not the size of the subcontractor's invoice, sets the ceiling on what the lien can recover.

Does serving the Section 24 notice early increase the lien amount?

It can, and that is the main reason to serve it early. Under 770 ILCS 60/27, the owner's exposure to a subcontractor is fixed by the unpaid balance owed to the general contractor when the owner receives notice of the subcontractor's claim. Serving the Section 24 notice at the start of the job, rather than waiting until day 89, puts the owner on notice while more of the contract fund is still unpaid and unspent. In Weather-Tite, Inc. v. University of St. Francis, 233 Ill. 2d 385 (2009), the Illinois Supreme Court treated the notice as the event that protects the subcontractor against the owner. Early notice locks in a larger balance the owner must hold back. Late notice risks arriving after the owner has already paid the contractor, leaving little or nothing to lien.

What happens to a subcontractor's lien if the owner already paid the general contractor?

The lien may be worth nothing, even if the general contractor still owes the subcontractor in full. Under 770 ILCS 60/27, the owner is liable to a subcontractor only for the unpaid balance due the contractor when the owner learns of the claim. If the owner paid the contractor in full before receiving the subcontractor's Section 24 notice, and the owner followed the sworn-statement procedure in 770 ILCS 60/5, there may be no unpaid balance left for the lien to attach to. The subcontractor still has a contract claim against the general contractor, but the security of a lien on the property is gone. This is why the date the owner pays the contractor, not the four-month recording deadline, is often the deadline that actually decides whether a subcontractor gets paid.

How does the owner's sworn statement affect the subcontractor's lien?

The sworn statement is the owner's tool for paying safely, and it works against a silent subcontractor. Under 770 ILCS 60/5, before paying the general contractor the owner is to require a written statement under oath listing every subcontractor and supplier and the amounts owed to each. An owner who pays in reliance on that statement is generally protected to the extent of the listed amounts. If the contractor omits a subcontractor or understates the balance, and that subcontractor never served its own Section 24 notice, the owner can pay the contractor in full and defeat the later lien. The independent notice under 770 ILCS 60/24 is the subcontractor's way to correct the record directly with the owner, regardless of what the contractor's sworn statement says or fails to say.