Illinois municipalities have several ways to annex unincorporated property. One of the most consequential is Section 7-1-13 of the Illinois Municipal Code, which permits a municipality, without a landowner’s consent, to annex certain unincorporated territory containing 60 acres or less if the territory is “wholly bounded” by one of several combinations of municipalities and other specified land. In the provision at issue in Husky Trans, Inc. v. Village of Barrington Hills, the qualifying boundaries are one or more municipalities together with a forest preserve district or park district. 65 ILCS 5/7-1-13(a)(e).
The Illinois Supreme Court is now considering a deceptively simple question: Does “wholly bounded” mean wholly bounded, or may a court disregard a sufficiently small boundary defect under the common law doctrine of de minimis non curat lex, meaning that the law does not concern itself with trifles?
The answer could affect municipal annexation planning throughout Illinois and the rights of businesses and other property owners facing involuntary annexation.
Link to How the Dispute Arose How the Dispute Arose
In February 2024, the Village of Barrington Hills adopted Ordinance No. 24 to involuntarily annex approximately 44.52 acres of unincorporated Cook County territory, including property owned or used by Husky Trans and Husky Truck Repair. A railroad right-of-way runs through the eastern side of the proposed annexation area and continues beyond it. Where the railroad exits the annexation territory, the boundary meets unincorporated Cook County rather than one of the types of property specified in Section 7-1-13.
The First District characterized the resulting defects as two 100-foot gaps that together represented approximately 4.7% of the annexation territory’s perimeter. The remainder was bounded by Barrington Hills, South Barrington, and forest preserve property.
The Village’s annexation notice stated that the Husky property would be rezoned to the Village’s R-1 Single Family Residence District. Husky had already contracted to sell the property to an entity planning a commercial paintball facility, a use that would not be permitted under that zoning classification. Husky objected to the annexation and proposed consenting if a commercially viable use could be preserved. The Village proceeded with the annexation.
Husky sued the next day and obtained a temporary restraining order before the ordinance’s March 8 effective date. It later added an alternative quo warranto claim. On June 12, 2024, the Cook County circuit court granted summary judgment to Husky, concluded that the territory was not “wholly bounded,” declared the ordinance null and void, and permanently enjoined its enforcement. Because the TRO prevented the annexation from becoming effective, the circuit court treated Husky’s quo warranto count as unripe and decided the issue through its declaratory and injunctive claims.
The First District reversed on September 29, 2025. It held that the railroad gaps were de minimis and entered summary judgment for the Village. Husky Trans, Inc. v. Village of Barrington Hills, 2025 IL App (1st) 241346-U. Importantly, that decision was issued under Supreme Court Rule 23 and therefore is not precedential, apart from Rule 23’s limited exceptions. The Illinois Supreme Court nonetheless allowed Husky’s petition for leave to appeal on January 28, 2026.
Link to The Two Competing Views of Section 7-1-13 The Two Competing Views of Section 7-1-13
Husky’s argument begins with the statutory text. Illinois courts have repeatedly stated that municipalities possess no annexation authority except that granted by the General Assembly and that annexations must comply with the governing statutory requirements. See City of East St. Louis v. Touchette, 14 Ill. 2d 243, 249 (1958); In re Petition to Annex Certain Territory to Village of North Barrington, 144 Ill. 2d 353, 361-62 (1991).
Section 7-1-13 is unusually detailed. It specifies the 60-acre ceiling, identifies the combinations of property that can satisfy “wholly bounded,” and contains several express exceptions. It does not contain a de minimis exception. Husky also notes that the General Assembly expressly used the term “de minimis” elsewhere in the Municipal Code, but not in Article 7’s annexation provisions. From Husky’s perspective, allowing courts to supply an unwritten exception converts a condition on municipal power into a flexible guideline.
The Village has substantial precedent of its own. Most significantly, in People ex rel. Chicago Title & Trust Co. v. City of Des Plaines, 76 Ill. App. 2d 243, 249-50 (1st Dist. 1966), the court applied the de minimis doctrine to Section 7-1-13 itself. The territory there was almost entirely surrounded by the municipality except for a 49-foot gap, comprising approximately 0.8% of the relevant boundary. The court treated the gap as trivial and held that the territory was “wholly bounded” within the statute’s meaning.
The Village also relies on People v. Knapp, 28 Ill. 2d 239, 244-45 (1963), where the Illinois Supreme Court declined to invalidate municipal incorporation proceedings because of an inadvertently included strip only six or seven feet wide and approximately 250 feet long. The Court described municipal-boundary statutes as dealing with practical matters requiring a practical, common-sense construction. Husky responds that Knapp involved incorporation rather than involuntary annexation, an inadvertent mistake, and a municipality that expressly disclaimed jurisdiction over the overlapping strip.
The harder precedent is Village of Mundelein v. Village of Long Grove, 219 Ill. App. 3d 853 (2d Dist. 1991). There, the court refused to disregard a 210-foot break as de minimis, even though the gap comprised less than 1.5% of the perimeter. The court emphasized that Long Grove had intentionally omitted approximately four acres of right-of-way and that including the omitted property would have pushed the annexation above the statutory 60-acre ceiling. The court concluded that the “wholly bounded” requirement served a distinct statutory purpose and should receive full effect.
That comparison explains why Husky is potentially more significant than a dispute over two strips of railroad property.
Husky contends that the 44.52-acre territory is part of a much larger contiguous unincorporated area of approximately 129 acres and argues that Village officials discussed annexing the area in phases so that each annexation would remain below 60 acres. The Village disputes that characterization and argues that there is no evidence of a plan to evade the acreage limitation. For Husky, however, the facts demonstrate why an undefined de minimis exception could become a tool for drawing around statutory limitations rather than a doctrine reserved for surveying mistakes. The Village responds that courts are perfectly capable of distinguishing a genuine trifle from a substantive statutory defect on a case-by-case basis.
The Village has another significant argument: legislative acquiescence. Des Plaines has existed since 1966, and the General Assembly has amended Section 7-1-13 numerous times without repudiating its use of the de minimis doctrine. The Village argues that this legislative silence supports retaining the doctrine. Husky responds that legislative acquiescence is a weak interpretive tool where the statutory language is unambiguous and, especially here, where appellate decisions have not spoken with one voice.
Link to What to Watch From the Illinois Supreme Court What to Watch From the Illinois Supreme Court
The most consequential question is not whether 100 feet or 4.7% is objectively “small.” It is whether de minimis is legally available under Section 7-1-13 in the first place.
A decision for Husky on that threshold question would create a relatively bright rule. If unincorporated land forms part of a boundary that the statute requires to be “wholly bounded” by specified property, a municipality would need to use another annexation procedure regardless of how small the gap is.
A broader decision for Barrington Hills could preserve Des Plaines and make future disputes considerably more fact-specific. Courts might then have to determine whether a defect is de minimis by examining its absolute length, its percentage of the perimeter, the type of property creating it, whether the irregularity was unavoidable, whether it was inadvertent or deliberately created, and whether disregarding it would effectively circumvent the 60-acre limitation.
There is also a plausible middle ground. The Supreme Court could recognize that de minimis remains part of Illinois annexation law while limiting it to genuinely incidental boundary defects, such as inadvertent or unavoidable slivers, and refusing to apply it when the municipal boundary design materially affects the acreage limitation or reflects an effort to manufacture statutory eligibility. That kind of holding would make municipal intent, surveys, legal descriptions, meeting records, and the history of adjacent annexations much more important in future cases.
Link to Practical Lessons for Municipalities and Property Owners Practical Lessons for Municipalities and Property Owners
Until the Supreme Court decides Husky, municipalities should not treat the First District’s decision as permission to rely on a small-gap exception. The decision is nonprecedential and is now under review. Before proceeding under Section 7-1-13, a municipality should have a defensible survey and legal description, identify the ownership and municipal status of every right-of-way touching the proposed territory, verify the applicable statutory boundary category, determine whether omitted adjoining unincorporated property affects the “wholly bounded” or 60-acre requirements, and separately confirm compliance with Section 7-1-13’s notice requirements. Where a material question exists, a voluntary or other statutory annexation route may be safer than building the transaction around an assumed de minimis exception.
Municipal boards should also recognize that their record may become evidence. Husky and the 2018 Chicago Title Land Trust Co. v. County of Will decision illustrate that courts may be asked to examine the sequence and structure of annexations, not merely the final map. Chicago Title, for example, invalidated an involuntary annexation after examining a preceding annexation used to create the necessary boundaries.
For businesses and property owners, an annexation notice deserves immediate attention. The first questions should include not only acreage and boundary geometry, but also the municipal zoning classification that would apply, licensing and building-code consequences, municipal taxing jurisdiction, existing and planned uses, and the status of any claimed nonconforming-use rights. Husky’s experience is a useful reminder that “grandfathering” should not simply be assumed to solve the problem. The scope and continued existence of nonconforming-use rights can depend on the existing use and the municipality’s ordinances.
The procedural timing can also be important. Illinois cases recognize quo warranto as the conventional method for challenging an accomplished annexation, while Husky shows that pre-effective-date declaratory and injunctive relief may be used to preserve the status quo before an annexation takes effect. Property owners facing an unwanted annexation therefore should not wait until the municipality begins exercising zoning or taxing authority before evaluating their options.
As of September 2, 2026, Husky Trans is scheduled for oral argument before the Illinois Supreme Court on September 24. Whatever the Court decides, its opinion should provide substantially more useful statewide guidance than the current patchwork of cases concerning when a municipal boundary defect is a harmless technicality and when it means the municipality never had statutory authority to annex the property in the first place.