844 Prospect Ave, Winnetka, IL 60093

Compare this assessment

Start with the county value and property facts, then review appraisal comps, recent sales, and prior-year changes to decide whether the assessment is worth challenging. The comps on this page are free to review; email sign-in is only used to save a printable report.

For nearby context, browse ZIP 60093 and New Trier assessment pages.

Local guide: New Trier Township 2026 Property Tax Appeal Guide.

Appeal deadlines

The 2026 appeal windows for New Trier have closed (Assessor June 22, 2026, Board of Review September 1, 2026). 2027 notices usually start in March.

Deadline rule: Set by township: file with the Assessor by your township's last file date, and with the Board of Review while your township is open there. Evidence is reviewed by the Cook County Assessor's Office or, in a separate appeal, by the Cook County Board of Review. Dates checked September 27, 2026 against the official source.

Assessment snapshot

These public CCAO records highlight what may be worth checking before you file.

• Assessor market value per square footThe current public record shows about $725 per square foot before any comparable-property adjustments.
• Nearby comparison areaThis page starts the equity review with public records for the New Trier neighborhood and ZIP 60093.
• Neighborhood value signalAmong 1,469 residential records in the same neighborhood, the average assessor market value is about $518 per square foot.
• Area year-over-year signalNearby residential records with prior-year values moved about -3.0% on average.

Public appraisal comparison for 2026. Prepared October 8, 2026. Appraisal source: Cook County Assessor's Office. Sales data checked in this snapshot: October 5, 2026. Showing the last prepared sales evidence while recent sales are refreshed. Matches consider available size, age, location and property characteristics. How comparisons work.

Value history

Up 160.0% in 2026 from 2024.