Cook County reassesses property on a triennial cycle, with different townships reassessed in different years. Investor-classified properties carry materially higher effective tax burdens than owner-occupied. Successful tax appeals routinely save 15–30% off initial assessments — among the highest-leverage activities for Cook County investors.
Next reassessment: Triennial (next 2026) · ~7.2% rate
Affluent northwest
Next reassessment: Triennial (next 2025) · ~12.5% rate
Inner-ring west, dense
Next reassessment: Triennial (next 2026) · ~13.8% rate
Far south Cook
Next reassessment: Triennial (next 2026) · ~11.2% rate
Southwest suburban
Next reassessment: Triennial (next 2026) · ~14.5% rate
Far south distressed
Next reassessment: Triennial (next 2024 reassess) · ~6.5% rate
City of Chicago
Next reassessment: Triennial (next 2025) · ~11.8% rate
Dense inner-ring west
Next reassessment: Triennial (next 2025) · ~8.5% rate
Northwest mixed
Next reassessment: Triennial (next 2025) · ~10.5% rate
Northshore university
Next reassessment: Triennial (next 2025) · ~8.2% rate
Far northwest
Next reassessment: Triennial (next 2026) · ~7.5% rate
Far southwest
Next reassessment: Triennial (next 2025) · ~9.5% rate
Northwest mixed industrial
Next reassessment: Triennial (next 2025) · ~9.8% rate
Inner-ring west
Next reassessment: Triennial (next 2025) · ~9.5% rate
Far north
Next reassessment: Triennial (next 2025) · ~9.2% rate
Affluent north shore
Next reassessment: Triennial (next 2025) · ~9.5% rate
North inner-ring
Next reassessment: Triennial (next 2025) · ~9% rate
Affluent far north
Next reassessment: Triennial (next 2025) · ~9.2% rate
Far northwest
Next reassessment: Triennial (next 2025) · ~11.5% rate
Inner-ring west historic
Next reassessment: Triennial (next 2026) · ~8.8% rate
Far southwest
Next reassessment: Triennial (next 2025) · ~8.5% rate
Far northwest
Next reassessment: Triennial (next 2026) · ~8.8% rate
Southwest forest preserve adjacent
Next reassessment: Triennial (next 2025) · ~12.8% rate
Inner-ring west distressed
Next reassessment: Triennial (next 2026) · ~13.5% rate
Far south distressed
Next reassessment: Triennial (next 2025) · ~9.8% rate
Inner-ring west historic
Next reassessment: Triennial (next 2025) · ~8.2% rate
Far northwest commercial
Next reassessment: Triennial (next 2025) · ~11.5% rate
Dense inner-west
Next reassessment: Triennial (next 2026) · ~13.2% rate
Far south distressed
Next reassessment: Triennial (next 2025) · ~8.5% rate
North mixed
Next reassessment: Triennial (next 2026) · ~10.8% rate
Southwest mixed
