On June 2, 2025, the Cook County Assessor mailed 2025 reassessment notices for Lyons Township residential properties. Owners must file their appeal by July 16, 2025, to contest any inflated valuations and protect against over-taxation.

Residential Assessment Shifts in Lyons Township

A breakdown of the percentage change data reveals where your biggest opportunities lie:
    
       •	Greater-than-One-Story Dwelling (<63 SFLA): up 3.66%, the largest increase among single-family homes.
       •	Special Residential Improvements: up 2.39%, affecting upgrades like pools, patios, and finished basements.
       •	Minor Improvements: up 2.14%, reflecting the impact of smaller renovations such as new siding or kitchen facelifts.
       •	Old-Style Row House: up 1.05%, indicating modest revaluations for historic-style homes.
       •	Cooperative Units: no change (0.00%), suggesting stable valuations across shared-ownership buildings.

Beyond these class-level shifts, two noteworthy patterns emerge:
   
       •	Neighborhood hotspots along Ogden Avenue and around Proviso High School saw a 0.5–1.0 percentage-point increase over the township mean. New infill developments and utility upgrades drove those increases.

       •	Ranch-style homes west of Harlem Avenue: values dipped about 0.25% on average, likely reflecting slower sales in late 2024

Even a 1 percent swing can translate to hundreds of dollars in annual property tax savings or liabilities. Understanding which micro-markets are “overheated” helps target your reassessment appeal where it counts most.

Why Act on a Reassessment Challenge Now

Unchecked over-assessments translate directly into higher property tax bills. Filing before July 16, 2025, preserves your right under the reassessment process to contest any inflated valuations. By filing early, your appeal is fast-tracked. You could see lower 2025 tax bills right away instead of waiting until next year.

Why Trust Cook County Appeals

   •	Deep Local Insight: We analyze granular sales comps, neighborhood trends, and class-specific shifts to craft targeted appeal strategies. 
   •	Zero Upfront Costs: Begin your reassessment appeal with no out-of-pocket expense.
   •	Contingency-Based Fees: We only earn when you save, ensuring our incentives align with yours.

Case Study: South Stickney Resident

In 2025, Mrs. Alvarez’s bungalow in South Stickney experienced a 3.4% increase in value. This increase was much higher than the average for the township. By focusing on comparable sales data in her block, we secured a 7 percent reduction in her reassessment appeal. That change cut her 2025 tax bill by more than $450.

How to Prepare Your Appeal

  1.	Gather Documentation: Your reassessment notice, last year’s tax bill, and any improvement receipts.
  2.	Review Comps: Look for recent sales within a one-mile radius, ideally closing within six months of the June 2 notice date.
  3.	Identify Errors: Check for incorrect square footage, misclassified property class, or missing exemption credits.
  4.	File Timely: Submit your appeal by the Last File Date: July 16, 2025. Late submissions are generally not accepted.
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Palos Township Trends: Click here to Compare residential shifts in neighboring jurisdictions.

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