Public Project Payment Recovery
Illinois Public Construction Project Payment Remedies
Government-owned property cannot be liened. Illinois law provides two alternative payment remedies for contractors, subcontractors, and suppliers on public construction projects: payment bond claims and liens on public funds.
Why Public Projects Require Different Remedies
On private construction projects, an unpaid contractor can file a mechanic lien against the property where work was performed. That lien encumbers the title and can ultimately force a judicial sale. This remedy is unavailable on public projects because government-owned property is constitutionally exempt from lien claims.
To fill this gap, the Illinois legislature created two alternative payment remedies specifically designed for public construction work. The Public Construction Bond Act (30 ILCS 550) requires payment bonds on most public projects, allowing unpaid claimants to recover from the surety company. Separately, the lien on public funds provision (770 ILCS 60/23) allows claimants to trap contract payments before the public body disburses them to the general contractor.
Understanding which remedy applies — and acting before statutory deadlines expire — is essential to recovering payment on any public construction project in Illinois. Not sure whether your project is public or private? Read our public vs private comparison.
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View all construction law servicesPayment Bond Claims Under 30 ILCS 550
The Public Construction Bond Act requires general contractors on most public projects to furnish a payment bond issued by a surety company. This bond guarantees that the general contractor will pay its subcontractors and suppliers. If payment is not made, the unpaid party can file a claim directly against the surety — bypassing the general contractor entirely.
Payment bond claims have their own notice requirements and suit deadlines that differ from mechanic lien procedures. The timing and content of required notices depend on whether the claimant has a direct contract with the general contractor or is a lower-tier subcontractor or supplier. First-tier subcontractors who contract directly with the GC may have different notice obligations than second-tier parties.
A successful bond claim recovers the full amount owed for labor and materials furnished on the project, plus potentially attorney fees and interest depending on the bond terms and applicable law. Because the surety is a financially solvent insurance company, bond claims often produce faster and more reliable recoveries than pursuing the general contractor directly.
For a complete walkthrough of notice requirements, timing, and strategy, see our dedicated payment bond claim guide.
Payment Bond Claim Key Points
- Targets the surety company, not the general contractor or public body
- Available to subcontractors, sub-subcontractors, and material suppliers
- Notice requirements vary by tier — first-tier vs. lower-tier claimants
- Must file suit within the statutory deadline to preserve the claim
- The surety's financial solvency generally ensures recovery if the claim is valid
- Federal projects use the Miller Act instead of Illinois state bond statutes
Lien on Public Funds Under 770 ILCS 60/23
The lien on public funds is a statutory mechanism that allows an unpaid claimant to "trap" contract payments that the public body holds for the general contractor. By serving a verified notice of claim on the public body, the claimant obligates the government entity to withhold sufficient funds from future payments to the general contractor to cover the claim.
This remedy is powerful but time-sensitive. The trapping mechanism only reaches funds still in the public body's possession when the notice is served. If the public body has already disbursed all contract payments to the general contractor, there may be nothing left to trap. That is why serving notice as early as possible — ideally as soon as you suspect a payment problem — is critical.
After serving notice, the claimant must file suit for an accounting within 90 days. If the claimant fails to file suit within this window, the lien on funds expires by operation of law and the public body may release the held funds to the general contractor.
For detailed procedures, notice requirements, and common pitfalls, see our lien on public funds guide.
Lien on Public Funds Key Points
- Traps contract funds held by the public body before they are disbursed
- Must serve verified written notice on the public body responsible for the project
- File suit for accounting within 90 days of serving notice
- Only effective if funds remain undisbursed — act early
- If the public body ignores the notice and releases funds, it may become liable
- Can be pursued simultaneously with a payment bond claim
Choosing the Right Public Project Remedy
The strongest recovery strategy on most public projects is to pursue both available remedies simultaneously. However, the specific facts of your case may favor one remedy over the other:
Payment bond exists and the project is still active
Pursue both the bond claim (for surety recovery) and the lien on funds (to trap remaining contract payments). This dual approach provides two independent sources of recovery.
No payment bond on the project
The lien on public funds is your primary remedy. Serve notice immediately to trap funds before they are disbursed. You may also have a breach of contract claim against the general contractor.
All contract funds already disbursed
The lien on funds may be ineffective if nothing remains to trap. Focus on the payment bond claim. If no bond exists, you may need to pursue direct litigation against the general contractor.
Deadlines Are Running
Both payment bond claims and liens on public funds have strict notice and suit deadlines. The lien on funds is especially time-sensitive because it only reaches funds that have not yet been disbursed. If you suspect nonpayment on a public project, contact an attorney immediately.
Related Public Project Resources
Illinois Construction Law
Comprehensive guide to all construction payment remedies
Payment Bond Claim Guide
Notice requirements, deadlines, and surety recovery
Lien on Public Funds Guide
Fund-trapping mechanism and 90-day suit deadline
Public vs Private Comparison
Determine which remedies apply to your project
Mechanic Lien Law (Private)
Payment remedies for private construction projects
Unpaid Contractor Guide
All payment remedies compared side-by-side
Deadline Calculator
Estimate your key filing dates