Deadline Analysis, Lien Filing, Notice Preparation, and Foreclosure Enforcement
Illinois Mechanic Lien Services
Haven't been paid on an Illinois construction project? Our attorneys handle every step of the mechanic lien process — from the first deadline analysis through lien recording, notice preparation, and foreclosure enforcement. Every deadline is strict and permanent. Contact us now to preserve your rights.
The Mechanic Lien: Why Illinois Law Calls It an Extraordinary Remedy
Under Illinois law, a mechanic lien is considered an extraordinary remedy — and for good reason. Unlike most legal claims, a mechanic lien allows parties who never entered into a direct contract with a property owner to assert a claim against the owner's real property. This is a powerful departure from the general rule that legal rights flow only between the parties to a contract.
Consider a common scenario in construction. A general contractor hires a subcontractor to install plumbing on a residential project. The subcontractor's contract is with the general contractor — not the homeowner. If the general contractor fails to pay, the subcontractor ordinarily would have no claim against the homeowner or the property itself. After all, the homeowner never agreed to pay the subcontractor directly.
Illinois mechanic lien law changes that equation entirely. The Illinois Mechanics Lien Act (770 ILCS 60/) recognizes that subcontractors, material suppliers, and laborers provide real, tangible value to real property — even when their contractual relationship is several steps removed from the property owner. Because their work and materials physically improve the property, the law grants them the right to place a lien directly on the real estate to secure payment for the value they contributed.
This is what makes the mechanic lien extraordinary. It creates a legal interest in property that the claimant never owned, based on a contract to which the property owner was never a party. It effectively shifts a portion of the risk of nonpayment away from the workers and suppliers who built or improved a structure and onto the property where the value of their labor and materials now resides.
For subcontractors and suppliers working on Illinois construction projects, understanding this remedy is essential. A properly perfected mechanic lien can be the difference between absorbing a devastating loss and recovering the full value of your work — regardless of what happened between you and the party that hired you. To learn more about the specific deadlines and requirements for subcontractors, visit our subcontractor lien deadlines page.
Who We Help
We represent every party in the Illinois construction payment chain who has furnished labor, materials, or services to a private construction project and has not been paid. Each role has different notice obligations and procedural requirements under the Illinois Mechanics Lien Act (770 ILCS 60). Our attorneys identify the requirements specific to your role and ensure every deadline is met.
General Contractors
Direct contracts with the property owner. Fewest procedural steps, but strict compliance with the verified claim is still required.
Subcontractors
All tiers — including sub-subcontractors. Must serve Section 24 notice within 90 days and, on residential projects, a 60-day notice from first furnishing.
Material Suppliers
Lien rights attach when materials are furnished for incorporation into the improvement. Same Section 24 notice and 4-month recording deadlines apply.
Architects & Engineers
Design professionals who provide services for the improvement of real property. Last substantive service date starts the deadline clock.
Equipment Lessors
Equipment leased for use on the construction project may qualify for lien rights depending on the lease terms and equipment use.
UCC-Secured Lenders
Lenders with security interests in construction materials or equipment may need to coordinate with mechanic lien claims to protect priority.
Public projects: Government-owned property cannot be liened. If your project is on public property, the appropriate remedies are a lien on public funds or an Illinois payment bond claim. We handle both.
Preserving Your Lien Rights
Illinois mechanic lien rights are not self-executing. The Mechanics Lien Act (770 ILCS 60) imposes a layered series of notice, recording, and enforcement deadlines that vary depending on your role and the type of project. Miss any one of them and your rights are permanently extinguished — Illinois courts apply strict compliance with no equitable exceptions.
The four core deadlines every claimant must track:
- 60-day residential notice — subcontractors on owner-occupied single-family homes must notify the owner within 60 days of first furnishing labor or materials
- 90-day Section 24 notice — subcontractors and suppliers on all private projects must serve the owner and lender within 90 days of last furnishing
- 4-month lien recording — all claimants must record with the County Recorder of Deeds within 4 calendar months of last furnishing
- 2-year foreclosure window — a foreclosure suit must be filed within 2 years of last furnishing; a Section 34 demand by the owner can compress this to just 30 days
For a complete breakdown of every deadline, trigger date, and statutory citation organized by claimant role, see our Illinois Mechanic Lien Deadlines reference page or use our Deadline Calculator to estimate your specific dates.
Our attorneys begin deadline analysis the day you contact us. We identify every applicable deadline, confirm your last furnishing date, and ensure every notice and recording is made with verified delivery.
Serving Required Notices
Most mechanic lien claimants — especially subcontractors and material suppliers — must serve one or more written notices before their lien can be enforced. The two most common are the 60-day residential notice (required on owner-occupied single-family homes) and the Section 24 notice (required on all private projects for subcontractors and suppliers).
Each notice has specific content requirements, service methods (certified mail with restricted delivery or personal delivery), and strict deadlines. General contractors with a direct contract with the owner are generally exempt from preliminary notice requirements — but they must still comply with all recording and verification requirements.
Our attorneys prepare and serve every required notice, confirm proper delivery, and maintain a documented chain of service for use in any subsequent enforcement proceeding. For detailed notice requirements by role, see our subcontractor lien rights guide.
How the Illinois Lien Process Works
Protecting your right to payment on an Illinois construction project requires moving through a specific sequence of steps — each one building on the last. Miss a step or execute it late and the entire claim can collapse, even if the debt is legitimate and undisputed.
Step 1: Identify your role and project type.
Your deadlines and notice obligations depend on whether you are a general contractor, subcontractor, or supplier — and whether the project is a private commercial job, an owner-occupied residence, or a public project. Public projects cannot be liened at all; they require a payment bond claim or lien on public funds instead.
Step 2: Serve required preliminary notices.
Subcontractors and material suppliers must serve written notice on the property owner (and lender, if any) before they can enforce a lien. On owner-occupied residential properties, a separate 60-day notice must be served within 60 days of first furnishing. On all other private projects, a Section 24 notice must be served within 90 days of last furnishing. General contractors with a direct contract with the owner are exempt from the Section 24 notice requirement.
Step 3: Record the lien claim.
Within 4 calendar months of your last date of furnishing labor or materials, you must record a verified claim for lien with the County Recorder of Deeds in the county where the property is located. The claim must include a legally sufficient property description, the correct property index number (PIN), the name of the owner of record, a description of the contract, and the balance due. A single material error can render the lien unenforceable.
Step 4: Serve notice of recording.
After the lien is recorded, you must serve notice of recording on the property owner within 30 days. This step is separate from the preliminary notices and is required to preserve enforceability.
Step 5: Enforce through foreclosure if necessary.
A recorded lien creates a cloud on title and puts pressure on the owner and lender — but it does not, by itself, force payment. If the dispute is not resolved, the lien must be enforced by filing a foreclosure lawsuit in the circuit court of the county where the property is located within 2 years of the last furnishing date. If the owner serves a Section 34 demand, that window collapses to 30 days.
Each of these steps has its own procedural requirements. Our attorneys handle the entire process — from the first deadline analysis through judgment and collection.
What Can Go Wrong: A Tale of Two Subcontractors
The stakes of lien compliance become clearest in contrast. The following is a hypothetical illustration based on the types of situations we regularly handle. It is not based on any specific client matter.
The Project
A general contractor is hired to build a large private commercial warehouse in Cook County, Illinois. Two structural steel subcontractors are awarded contracts — one for the primary steel frame, one for miscellaneous metals and ornamental work. Both begin work in January. By spring, the GC is experiencing serious cash flow problems. Both subcontractors complete their scopes in late May and submit final invoices. Neither is paid. By August, the GC has filed for Chapter 11 bankruptcy. The project owner — who still owes the GC a substantial balance — has refused to pay any subcontractors until the situation is resolved.
Subcontractor A — The One Who Lost Everything
Subcontractor A furnished approximately $480,000 in structural steel labor and materials, completing his scope on May 28. He spent the summer making calls and sending demand letters to the GC, operating on the assumption that payment would eventually flow through once the GC received what it was owed.
He had no attorney. No deadline calendar. No organized file. He did not know that Illinois law imposed hard, non-waivable deadlines to preserve his lien rights — deadlines that were running while he waited.
By the time he retained an attorney in mid-October, it was too late. His four-month deadline to record a claim for lien under 770 ILCS 60/7 had expired on September 28. He had also failed to serve a Section 24 notice on the property owner within 90 days of his last furnishing date — a deadline that had passed on August 26.
Without a recorded lien and without a timely Section 24 notice, Subcontractor A had no lien rights enforceable against the property owner, the construction lender, or any third party. He was reduced to an unsecured creditor in the GC's bankruptcy — one of dozens competing for cents on the dollar. He recovered nothing.
Subcontractor B — The One Who Got Paid
Subcontractor B furnished approximately $195,000 in labor and materials, also completing his scope in late May. His dollar amount was less than half of Subcontractor A's — but that is not why he got paid. He got paid because he was prepared.
From the moment his contract was signed, Subcontractor B's attorney had the project on a structured deadline calendar. His file was organized: executed contract, certified payrolls, delivery tickets, invoices, and correspondence — all maintained in order throughout the project. When payment stopped, he did not wait and hope. His attorney already had a plan.
On June 18 — within 90 days of his last furnishing date — his attorney served a Section 24 notice on both the property owner and the construction lender by certified mail, identifying the claim amount and the nature of the work performed. On September 15 — well within the four-month recording window — his attorney recorded a verified claim for lien with the Cook County Recorder of Deeds and served notice of recording on the owner. Every deadline was met. Every document was in order.
When the GC filed for bankruptcy, Subcontractor B's lien was already recorded and properly perfected. The automatic stay that accompanied the bankruptcy filing prevented him from immediately pursuing a foreclosure action against the GC — but the lien was not a claim against the GC. It was a claim against the property itself. The automatic stay did not bar enforcement of a properly perfected mechanics lien against the property owner, who was a non-debtor third party.
The property owner, now facing a valid recorded lien that clouded title and threatened the project's financing, had no practical choice. He negotiated a full payment of Subcontractor B's claim in exchange for a lien release, allowing the project to be refinanced and closed. Subcontractor B recovered 100 cents on the dollar. Subcontractor A recovered nothing.
The Lesson
The difference between these two outcomes had nothing to do with the merits of either claim. Both subcontractors did the work. Both were owed money. The difference was preparation — and the willingness to treat lien rights not as a last resort, but as a standard part of doing business on every project, from day one.
When the Property Owner Files Bankruptcy
A bankruptcy filing by the property owner or general contractor does not necessarily end your ability to recover — but only if your lien was properly perfected before the filing.
When a debtor files for bankruptcy, the automatic stay under 11 U.S.C. § 362 immediately halts most collection actions, including lien foreclosure suits. However, a mechanic lien that was recorded before the bankruptcy petition is generally treated as a secured interest in the property — not merely an unsecured debt. This distinction is critical.
A secured lien claimant is in a fundamentally different position than an unsecured creditor. Unsecured creditors — those without a recorded lien — are typically paid last in a bankruptcy proceeding, often receiving a fraction of what they are owed or nothing at all. A secured lien claimant, by contrast, has a claim tied to the value of the property itself.
The timing and perfection of your lien also affects whether it can be challenged as a preferential transfer under 11 U.S.C. § 547. Liens perfected well before the 90-day preference window are generally not at risk. This is one more reason why early recording — not waiting until the deadline — is always the better practice.
If you have a recorded lien and the owner or GC files bankruptcy, contact us immediately. The bankruptcy proceeding creates new deadlines of its own, and relief from the automatic stay may be required before you can proceed with foreclosure. The window to act is narrow.
Common Mistakes That Permanently Destroy Lien Rights
These are the errors we see most often — each one capable of wiping out a legitimate claim entirely.
Waiting to see if payment comes through.
The 4-month recording deadline runs whether or not you are still negotiating. Many contractors lose their lien rights while exchanging emails with a GC who has no intention of paying. The deadline is absolute.
Miscalculating the last furnishing date.
Returning to the project for warranty repairs, punch-list inspections, or to retrieve equipment generally does not extend your lien deadline. Only work that adds new value to the improvement counts. Courts scrutinize this closely.
Serving the Section 24 notice late — or not at all.
Subcontractors and suppliers who miss the 90-day Section 24 notice window lose the ability to enforce their lien against the property owner, lender, and third parties — even if the lien itself is timely recorded. Both deadlines must be met.
Forgetting the 60-day residential notice.
On owner-occupied, single-family residential properties, a separate notice must be served within 60 days of first furnishing — before most subcontractors even think about lien rights. Missing this notice on a qualifying project can be fatal to the claim.
Errors in the lien claim itself.
A verified claim for lien that contains a materially incorrect property description, wrong owner name, or miscalculated claim amount may be unenforceable. Illinois courts apply strict compliance to the content of the lien document, not just the timing.
Failing to serve notice of recording.
After recording the lien, notice must be served on the property owner within 30 days. This is a separate, often-overlooked requirement that can affect enforceability.
Waiting for the GC to pay before acting.
A mechanic lien is a claim against the property, not just against the GC. You can record a lien and serve the property owner even if you have no direct contract with them. Waiting for the GC to pay is the single most common reason subcontractors lose their lien rights.
Filing and Recording Your Mechanic Lien
Our attorneys prepare every lien claim from scratch — we do not use generic online templates. Each verified claim is drafted to comply with the strict requirements of 770 ILCS 60/7, including the correct legal property description, property index number (PIN), owner of record, a description of the contract, and the verified claim amount. The claim is notarized and recorded with the County Recorder of Deeds in the county where the property is located.
After recording, we serve notice of recording on the property owner within 30 days as required by statute. We maintain a documented chain of service — certified mail receipts, affidavits of service, and proof of delivery — that can be used in any subsequent enforcement proceeding.
For a detailed step-by-step walkthrough, see our guide on how to file a mechanic lien in Illinois.
Enforcing Your Lien Through Foreclosure
A recorded mechanic lien creates a cloud on the property's title and significant leverage for negotiation. Many claims settle shortly after recording because the lien prevents the owner from selling or refinancing the property. But if the owner refuses to pay, the lien must be enforced through a mechanic lien foreclosure lawsuit.
Foreclosure must be filed within two years of the claimant's last furnishing date — or within 30 days if the owner serves a Section 34 demand. The foreclosure action is filed in the circuit court of the county where the property is located. A successful judgment can result in a court-ordered sale of the property to satisfy the lien.
Our attorneys handle every stage of enforcement — from pre-suit demand negotiations through trial and judgment collection. If you have a recorded lien and the owner is not paying, contact us to discuss enforcement strategy.
When to Hire a Mechanic Lien Attorney
The most important thing to understand about Illinois mechanic lien deadlines is that they start running on the day you finish your work — not the day the payment dispute begins. By the time most contractors realize they will not be paid, a significant portion of the deadline window has already elapsed.
The best time to contact a mechanic lien attorney is before you finish your work, so deadlines can be calendared and notices prepared in advance. The second-best time is the day you realize payment is at risk. The worst time is after the deadlines have expired — because at that point, there is nothing an attorney can do to restore your lien rights.
If you are working on an Illinois construction project and you have any concern about payment — contact us now. Even a brief initial consultation can identify the deadlines you face and the steps needed to preserve your claim. We represent contractors across Illinois, including Chicago and Cook County.
Why Choose Our Firm
Our attorneys have practiced Illinois construction law since 1977. Our managing attorney is the author of the Illinois Construction Law Manual and Forms (McGraw-Hill) — one of the most widely referenced treatises on Illinois construction law. We have filed and enforced mechanic liens in every major county across Illinois.
- We handle the complete lien process — deadline analysis, notice preparation, lien recording, and foreclosure enforcement
- Every lien claim is drafted from scratch to meet the strict compliance standard, never from templates
- We serve contractors, subcontractors, material suppliers, and design professionals across the state
- We respond to urgent deadline situations within 24 hours
- Our attorneys are available for a free initial consultation on every new matter
Illinois Mechanic Lien Resources
Illinois Mechanic Lien Deadlines
Every deadline by role: 60-day, 90-day, 4-month, and 2-year windows
Deadline Calculator
Estimate your specific deadlines based on your last furnishing date
How to File a Mechanic Lien
Step-by-step guide to preparing, recording, and serving a lien
Mechanic Lien Attorney
How our attorneys help at every stage of the lien process
Subcontractor Lien Rights
Section 24 notice, residential rules, and lien amount limits
Section 24 Notice Guide
90-day notice requirements for subcontractors and suppliers
4-Month Recording Deadline
Record within four months or permanently lose priority
Lien Foreclosure
How to enforce your recorded lien through a foreclosure lawsuit
Chicago Mechanic Lien Attorney
Filing and enforcing liens in Chicago and Cook County
Payment Bond Claims
Alternative remedy for public projects under 30 ILCS 550
Frequently Asked Questions — Illinois Mechanic Lien
What is a mechanic lien in Illinois?
A mechanic lien in Illinois is a statutory security interest in real property granted to anyone who furnishes labor, materials, or services to improve that property and is not paid. The lien is governed by the Illinois Mechanics Lien Act, 770 ILCS 60/1 et seq. Once recorded with the County Recorder of Deeds, the lien encumbers the property title, preventing the owner from selling or refinancing until the claim is resolved. If the owner still refuses to pay, the lienholder can file a foreclosure lawsuit and force a judicial sale of the property to satisfy the debt. The lien relates back to the date of the owner's original contract with the contractor, which can give it priority over mortgages recorded after that date.
Who can file a mechanic lien in Illinois?
Under the Illinois Mechanics Lien Act (770 ILCS 60), the following parties may file a mechanic lien: general contractors with a direct contract with the property owner, subcontractors at any tier, material suppliers who furnish materials for incorporation into the improvement, architects, engineers, and surveyors who provide professional services for the project, and equipment lessors in certain circumstances. Each party has different notice requirements and deadlines. General contractors who deal directly with the owner have fewer procedural steps than subcontractors or suppliers, who must comply with additional notice provisions under Section 24 and, in some cases, Section 5 of the Act.
How long do I have to file a mechanic lien in Illinois?
The primary deadline is the four-month recording window: you must record your lien claim with the County Recorder of Deeds within four months of your last date of furnishing labor or materials to the project. For subcontractors and suppliers, you must also serve a Section 24 notice on the property owner within 90 days of your last furnishing date. On owner-occupied residential projects, subcontractors face an additional 60-day notice requirement measured from their first furnishing date. Missing any of these deadlines permanently forfeits your lien rights with no exception.
What does 'strict compliance' mean for Illinois mechanic liens?
Illinois courts have consistently held that the Mechanics Lien Act requires strict compliance — not merely substantial compliance — with every statutory requirement. This means that even a minor error in the property legal description, an incorrect owner name, a late notice, or a defective verification can invalidate the entire lien, even if the underlying debt is legitimate and undisputed. The courts reason that because the lien is a creature of statute (it did not exist at common law), a claimant must satisfy every condition the statute imposes in order to benefit from the remedy it provides. This is why professional preparation of the lien claim is critical.
What happens if I miss the 4-month recording deadline?
If you fail to record your mechanic lien claim within four months of your last furnishing date, your lien rights are permanently lost against third parties — including mortgagees, subsequent purchasers, and other lienholders. There is no extension, no equitable tolling, and no cure provision. A lien recorded after the four-month window is void as to third parties, though it may still be effective against the original owner if filed within two years of the last furnishing date under 770 ILCS 60/7. As a practical matter, losing priority against third parties eliminates most of the lien's value as a collection tool.
Can I file a mechanic lien on a public project in Illinois?
No. Government-owned property is exempt from mechanic liens under Illinois law. However, subcontractors and material suppliers on public construction projects have two alternative remedies: the lien on public funds under 770 ILCS 60/23, which attaches to contract money the public body has not yet disbursed to the prime contractor, and the payment bond claim under the Illinois Public Construction Bond Act (30 ILCS 550). Each remedy has its own notice requirements and deadlines. Many claimants pursue both simultaneously to maximize recovery.
How much does it cost to file a mechanic lien in Illinois?
Filing costs include the County Recorder of Deeds recording fee, which varies by county (typically $40–$80 for the first four pages), attorney fees for preparing the verified lien claim and serving required notices, and any process server or certified mail costs. The total cost is modest relative to the amount a lien typically protects. Attempting to file without an attorney may save on fees initially but risks procedural errors that can permanently forfeit the entire claim. Contact our firm for a specific cost estimate based on your project details.
What is a Section 24 notice in Illinois?
A Section 24 notice is a written notice that subcontractors and material suppliers must serve on the property owner to preserve their mechanic lien rights under 770 ILCS 60/24. The notice must be served within 90 days of the claimant's last date of furnishing labor or materials. It must identify the claimant, describe the nature of the work or materials furnished, state the amount due, and identify the party who hired the claimant. Service must be by certified mail (restricted delivery) or personal delivery. Failure to serve a timely Section 24 notice permanently destroys the subcontractor's or supplier's lien rights, even if the underlying claim is otherwise valid.
Do I need an attorney to file a mechanic lien in Illinois?
While there is no legal requirement to hire an attorney, the Illinois Mechanics Lien Act demands strict compliance with every procedural requirement. A single error — in the property description, the owner's name, the verification, the notice timing, or the service method — can permanently invalidate the lien. Online template forms do not account for the specific facts of each project or the statutory nuances that vary by claimant role. Given that a mechanic lien typically protects tens or hundreds of thousands of dollars in unpaid work, the cost of professional legal preparation is a small fraction of what is at stake.
What is a Section 34 demand and why is it dangerous?
A Section 34 demand is a written notice that the property owner can serve on a mechanic lien claimant under 770 ILCS 60/34, demanding that the claimant file a foreclosure lawsuit within 30 days. If the claimant does not file suit within that 30-day window, the lien is automatically released and the claimant permanently loses the right to enforce it. This compresses the standard two-year enforcement window down to just 30 days. If you receive a Section 34 demand, contact an attorney immediately — you may have very limited time to act before your lien is extinguished.
Protect Your Illinois Mechanic Lien Rights — Contact Us Today
Every Illinois mechanic lien deadline is strict and permanent. The four-month recording window, the 90-day Section 24 notice, the 60-day residential notice — miss any one of them and your rights are gone forever. The sooner you engage an attorney, the more options remain available to protect your claim.
Our attorneys have practiced Illinois construction law since 1977. Our managing attorney is the author of the Illinois Construction Law Manual and Forms (McGraw-Hill) — one of the most widely referenced treatises on Illinois construction law. We have filed and enforced mechanic liens in every major county across Illinois, and we handle every step of the process from deadline analysis through foreclosure.
If you are owed money on an Illinois construction project — whether $15,000 or $1.5 million — contact us for a free consultation to discuss your mechanic lien rights. We will tell you where you stand and what steps need to be taken to preserve your claim.