Lemont Township Property Tax Appeal 2026: 32 Properties Flagged, $1M Total Savings

Lemont Township, located in Cook County's southwest corner along the I-355 corridor, has emerged as one of the higher-value appeal opportunities in the 2026 reassessment cycle. TaxRival's analysis has flagged 32 commercial properties with an average estimated savings of $30,709 per year and a total savings opportunity of approximately $1.0 million.

The combination of newer retail development, light industrial properties, and a growing commercial base along major expressway corridors means Lemont Township's commercial assessments carry significant dollar values — and the gap between assessed value and market value can be substantial when it exists.

Municipalities in Lemont Township

Lemont Township covers a relatively less dense, more suburban portion of southwest Cook County:

• Lemont — the primary community, which has seen significant commercial growth over the past two decades, particularly along the I-355 and IL-53 corridors
• Woodridge (partial) — portions of Woodridge that fall within Cook County are included in Lemont Township's boundaries

Unlike the densely built-up townships closer to Chicago, Lemont Township has a more suburban character with larger lot sizes and more modern commercial construction. This affects the types of appeal arguments that are most effective — newer properties are less likely to have condition-based issues, but income and comparable sales arguments remain powerful.

Commercial Property Landscape

Lemont Township's commercial real estate reflects its position as a growing suburban market along major transportation routes:

• Retail along I-355: The Veterans Memorial Tollway (I-355) has driven substantial retail and commercial development in Lemont. Shopping centers, standalone retail buildings, restaurants, and service-oriented commercial properties cluster near interchange areas. These properties tend to be newer construction — built in the 2000s or later — and carry higher assessed values than the older commercial stock found in more established townships.
• Light industrial and flex space: The township has attracted light industrial, flex, and distribution uses that benefit from expressway access. These properties often have modern construction specifications but may still be over-assessed if rental rates or occupancy have softened.
• Village of Lemont commercial district: The historic downtown Lemont area has a small cluster of older commercial buildings along Main Street, distinct from the newer corridor development. These properties face different valuation dynamics than the highway-oriented commercial stock.

What Our Analysis Shows

TaxRival reviewed commercial properties across Lemont Township and identified 32 with strong indicators of over-assessment:

• 32 properties flagged for potential appeal
• $30,709 average estimated annual savings per property
• $1.0 million total estimated savings across all flagged properties

The $30,709 average savings is among the highest of the south and west suburban townships, reflecting the higher property values in Lemont's commercial corridors. For context, a property saving $30,709 per year would save over $92,000 across a three-year reassessment cycle — a significant impact on any commercial property's financial performance.

The flagged properties span both retail and industrial categories. For retail properties near I-355, the appeal case often centers on income data — if actual rents and occupancy have fallen short of what the assessed value implies, the assessment may exceed fair market value. For industrial properties, comparable sales and per-square-foot benchmarks are often the most effective approach.

The 2026 Reassessment Cycle

Lemont Township is part of the 2026 south and west suburbs reassessment, which covers all 17 townships in Cook County's south and west triads. This is the first reassessment since 2023, and the CCAO has introduced updated appeal rules that affect commercial property owners across the board.

For Lemont Township specifically, two changes are worth noting. First, the loaded capitalization rate methodology will affect how the Assessor values the township's income-producing retail and industrial properties. The methodology incorporates property taxes into the cap rate calculation, which can change the implied fair market value for properties with significant tax burdens. Second, the CCAO's updated comparable sales standards may affect which sales the Assessor uses to benchmark Lemont properties — given the mix of newer and older stock in the township, the selection of appropriate comparables is critical.

For more on navigating these changes, see our guide to reducing commercial property taxes in Cook County.

Timeline for Lemont Township Appeals

Reassessment notices for Lemont Township are anticipated in late April through May 2026, with the appeal window opening shortly after.

• Late April–May 2026: Reassessment notices mailed
• May–June 2026: Assessor-level appeal window (typically 30 days)
• Summer 2026: CCAO decisions on Assessor-level appeals
• Fall 2026–Early 2027: Board of Review appeals for second review

Visit our 2026 appeal deadline calendar for exact township dates as they are published.

How to Prepare

For Lemont Township's higher-value commercial properties, appeal preparation should be thorough:

• Photographs: Dated, color photos taken after January 1, 2025. For newer properties, interior and exterior shots that document current condition. For older properties in the village core, emphasize any deferred maintenance or functional issues.
• Income and expense data: Three years of operating statements with detail on rental income, vacancy, collection losses, and operating expenses. For retail properties near I-355, document any softness in rents or occupancy relative to what the assessed value implies.
• Comparable sales: Recent transactions involving similar property types in Lemont, Woodridge, and surrounding areas. Newer construction should be compared to newer construction — do not let the Assessor benchmark your 2005-built retail center against a 1970s-era property with different land values and construction costs.
• Cap rate analysis: Calculate the implied cap rate from your current assessment and compare it to market cap rates for similar property types. If the assessment implies a cap rate well below market, that is a strong indicator of over-assessment.

Check Your Lemont Township Property

With $1.0 million in total estimated savings across 32 flagged properties, Lemont Township offers meaningful appeal opportunities for commercial property owners. Visit taxrival.com to look up your property and see whether it has been identified in our analysis. Our review is free and provides a clear, data-driven assessment of your appeal potential before your reassessment notice arrives.