The Hidden Legal Risks of Change Order Disputes on Illinois Commercial Construction Projects

Commercial construction contracts allocate change-order risk with unusual precision. Written authorization clauses, notice deadlines, delegated authority provisions, claim waivers, time-extension procedures, and Illinois mechanics lien requirements can each operate independently, meaning a contractor may prove that additional work was performed and still fail to prove a legal right to payment.

Illinois law makes that distinction consequential because an extras claim requires more than evidence of added labor or material. In Doornbos Heating & Air Conditioning, Inc. v. Schlenker, the court required clear and convincing proof of entitlement to extra compensation. An highly rated Illinois construction attorney should therefore evaluate the legal risks that can defeat or limit a change-order claim.

Risk of Losing Payment for Unsigned Extra Work

Commercial contracts commonly require written and signed authorization before extra work becomes compensable. If the clause operates as a condition precedent to additional compensation, failure to satisfy it can give the owner or general contractor a contractual defense to payment.

Illinois also recognizes waiver. In Joray Mason Contractors Inc. v. Four J’s Construction Corp., the appellate court held that a written-extra requirement could be waived by conduct where extras had been authorized without written agreements. That does not make oral directives safe; it creates a separate factual dispute over whether the parties’ conduct actually waived the written-change procedure.

Risk of Nonpayment When the Wrong Person Authorizes the Change

A field instruction does not necessarily bind the party responsible for payment. An architect, superintendent, construction manager, or owner’s representative may have authority to direct performance without contractual authority to increase price or extend contract time.

Miller v. DeWitt illustrates the distinction. The contract permitted the architect to make minor changes not involving extra cost but required specified authorization for changes affecting compensation. Contractors should therefore identify who may approve scope, price, and schedule changes and exactly what form that approval must take.

Risk of Failing to Prove the Work Was Outside the Original Scope

A contractor cannot recover an “extra” merely by proving additional labor or material was furnished. The claimant must establish that the disputed work was outside the original contractual scope.

The five-part test applied in Doornbos makes the project record critical. Drawings, specifications, RFIs, field directives, daily reports, work tickets, invoices, and communications should establish why the disputed work was not already required. If the additional work became necessary because of the contractor’s own defective performance, the extras claim may fail even though additional costs were incurred.

Risk of Waiving Compensation or Time Extensions Through Defective Notice

Commercial construction agreements frequently impose separate notice requirements for changed conditions, additional cost, delay, acceleration, and extensions of time. Missing a contractual deadline can jeopardize rights that otherwise may exist.

In Paschen Contractors, Inc. v. City of Kankakee, the project contract required that a claim for an increase in the contract price be based on written notice delivered to the owner and project engineer within 10 days after the event giving rise to the claim. The court noted that Paschen submitted written letters seeking additional compensation for each disputed item, but it did not resolve the legal consequences of defective or late notice, whether actual project knowledge could excuse noncompliance, or whether continuing notice was required. In evaluating a notice-based claim, counsel should establish when the claimed event occurred, the content and timing of each notice, the relief requested, and any contractual requirement for updated or continuing notice.Risk of Releasing Delay and Impact Claims in a Signed Change Order

Signing the change order can create a different legal risk. Language stating that the change price constitutes full compensation, includes direct and indirect costs, or leaves contract time unchanged may restrict later claims for extended general conditions, acceleration, disruption, inefficiency, or cumulative impact.

In Air Safety Inc. v. Teachers Realty Corp., the Illinois Supreme Court treated executed change orders as contractual writings and held the parties to the stated prices. A contractor intending to preserve unresolved cost or schedule impacts should expressly address those reservations before executing the change order.

Risk of Damaging Prompt Payment and Mechanics Lien Rights Through Poor Change Order Accounting

Change-order accounting can affect statutory remedies as well as contract damages. The Illinois Contractor Prompt Payment Act defines a payment application to include a request for payment of a change order. For covered private commercial construction contracts, an approved payment application generally must be paid within 15 calendar days, and an application is deemed approved after 25 days unless the owner timely provides a written statement identifying the amount withheld and the reason.

Change orders can also affect mechanics lien rights. Section 7 of the Illinois Mechanics Lien Act addresses extra or additional work when calculating a contractor’s recording period and requires the lien claim to state the balance due after credits. Section 24 separately addresses extra or additional work when calculating a subcontractor’s 90-day notice period. Unsupported extras, omitted credits, waivers, or an incorrect completion date can therefore weaken the lien claim.

Control Change Order Risk With an Illinois Construction Lawyer

A change-order claim can be lost before litigation through defective authorization, notice, proof, release language, or lien accounting. Speak with an Illinois construction lawyer before disputed extra work becomes an unrecoverable project cost and contact us today.