Background
Thirteen homeowners on the shores of Lake Springfield owned lakefront residential properties leased from the City of Springfield. In 2016, they filed property tax objection complaints, alleging that Sangamon County assessed their homes using different valuation formulas than those applied to nearby recreational club properties (yacht clubs and boat clubs) also on the lake. The county used a “residential” formula that considered location, frontage, and lot size, while applying a “commercial” formula based solely on square footage to the club properties.
The plaintiffs contended that this dual approach violated the Illinois Constitution’s uniformity clause, which requires taxes to be levied uniformly on real property. They calculated that had their land been valued under the same formula as the club properties, their taxes would have been $2,463 to $4,725 lower annually. The trial court agreed, finding the properties were “like kind” and similarly situated, and awarded the homeowners partial tax refunds.
The Sangamon County Collector appealed, arguing that the plaintiffs failed to establish a uniformity clause violation.
The Court’s Holding
The appellate court reversed the trial court’s judgment. Although the court assumed for purposes of review that the residential and commercial properties were comparable, it held that the plaintiffs failed to prove a violation of the uniformity clause because they presented no evidence of the fair cash values (FCV) of either their properties or the club properties. Under Illinois law, the uniformity clause requires that properties be taxed at an equal proportion of their true fair cash value. The court explained that tax officials may not value similar properties at different proportions of their true value.
The court distinguished the case from Walsh v. Property Tax Appeal Board, the leading Illinois Supreme Court decision on uniformity. In Walsh, the court found a uniformity violation where evidence showed that different valuation methods resulted in properties being taxed at vastly different percentages of their true fair cash value (ranging from 7% to 68%). Here, the plaintiffs presented calculations showing that different formulas would yield lower taxes for them, but they did not prove that the different formulas actually resulted in them paying taxes on a different percentage of their properties’ true fair cash value. Without evidence of FCV for both properties, the court concluded it was impossible to determine whether a true uniformity violation existed.
The court also rejected the plaintiffs’ alternative argument that they were overassessed because their leasehold interests were valued as fee interests, finding this claim was forfeited because it was not raised in their amended complaint and they had explicitly stated their case involved only the uniformity issue.
Key Takeaways
- The mere use of different valuation formulas for different types of properties does not by itself constitute a uniformity clause violation without evidence that the formulas result in unequal proportional taxation of true fair cash value.
- Plaintiffs challenging property tax assessments on uniformity grounds bear the burden of proving by clear and convincing evidence that different assessment methods resulted in different proportional tax burdens relative to the properties’ true fair cash values.
- Evidence that different formulas would produce different tax amounts is insufficient; a challenger must present evidence of the fair cash values of the properties being compared.
Why It Matters
This decision significantly clarifies the evidentiary burden required to challenge property tax assessments under the Illinois Constitution’s uniformity clause. Taxing authorities may employ different assessment methodologies for different categories of property without violating uniformity merely by their existence. Property owners cannot prevail by showing only that different formulas exist and would yield different tax results; they must affirmatively prove the fair cash values of the properties in question and demonstrate that the different formulas result in genuinely unequal proportional taxation of those true values. This is a substantial evidentiary hurdle.
The decision has practical implications for challenges to specialized property assessments, particularly lakefront and recreational properties that may be assessed differently from standard residential parcels. It signals that challenges must be data-driven and focused on fair cash value disparities, not merely on methodological differences. Plaintiffs must come to court prepared with comprehensive valuation evidence if they hope to prevail on uniformity claims.