Grundy availability

Dated product journey evidence

Evidence below is separate from county capability and your property’s offer. Local source-to-PDF fixtures are not hosted purchases. Shared commerce proof does not establish every address or township; only the normal property check determines the appropriate $5 or $50 product.

• $5 property evidence review: unproven

  Not separately exercised. not exercised. No dated product-specific journey proof has been admitted here. Existing county source/PDF evidence remains separately scoped; this does not establish a new failure, a countywide impossibility, or that both products must apply to one property.

• $50 appeal preparation packet: unproven

  Not separately exercised. not exercised. No dated product-specific journey proof has been admitted here. Existing county source/PDF evidence remains separately scoped; this does not establish a new failure, a countywide impossibility, or that both products must apply to one property.

Official dates, forms and filing instructions

Last checked 2026-10-27T13:02:02.825Z. Use the official source to confirm your assessment year, township and filing requirements.

Last verified filing facts: 2026-10-26T13:08:11.503Z. Assessment year is distinct from tax payable year.

• deadline — 2026 assessment; Countywide

  Published filing deadline: 2026-10-26. Opening date unknown. Confirm this is your township or scope with the official authority.

  Full official source quote for Countywide — 2026 assessment

  Other townships or scopes in the quote are source context, not deadlines for this scope.

  The deadline to submit the Assessment Appeals is Monday, October 26, 2026, at 4:30 pm.

  Official source
• deadline — 2026 assessment; Grundy County

  Published filing deadline: 2026-10-26. Opening date unknown. Confirm this is your township or scope with the official authority.

  Full official source quote for Grundy County — 2026 assessment

  Other townships or scopes in the quote are source context, not deadlines for this scope.

  ASSESSMENT COMPLAINT DEADLINE: OCTOBER 26, 2026 @ 4:30PM

  Official source
• filing method — 2026 assessment; Countywide

  1. In-person: Complaints MUST be received at the office no later than 4:30pm on or before the end of business on October 26, 2026. 2. By email: Send complete / signed complaint form and all evidence to bor@grundycountyil.gov , on or before 11:59pm on October 26, 2026. 3. By mail: Postmark date / time on or before 11:59pm on October 26, 2026.

  Official source
• filing method — 2026 assessment; Grundy County

  1. In-person: Complaints MUST be received at the office no later than 4:30pm on or before the end of business on October 26, 2026. 2. By email: Send complete / signed complaint form and all evidence to bor@grundycountyil.gov , on or before 11:59pm on October 26, 2026. 3. By mail: Postmark date / time on or before 11:59pm on October 26, 2026.

  Official source
• form — 2026 assessment; Countywide

  2026 REAL ESTATE ASSESSMENT COMPLAINT FORM

  Official source
• form — 2026 assessment; Grundy County

  2026 REAL ESTATE ASSESSMENT COMPLAINT FORM

  Official source
• instructions — 2026 assessment; Countywide

  This form must be completed and filed no later than 30 days after the date of publication of the assessment list for the township in which the property is located.

  Official source

You file your own appeal. This information does not change county capability, verify a property’s filing eligibility, or unlock paid preparation. No legal/tax advice or county affiliation.

What the property check looks for