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Ottawa County, OH

Ottawa County property tax appeal 2027: deadline, forms and how to file

Scan from recent salesFacts not yet verified by a person — confirm on your notice

To appeal an Ottawa County assessment, file with the Ottawa County Board of Revision; in Ohio the deadline is March 31 of the year after the tax year. Confirm the exact date on your notice or with the assessor; we add each county's 2027 date here when it is published.

Data as of 20 Oct 2026 · the Ottawa County assessor
Your home

Check your own assessment

Free. We compare the value on your notice with recent sales of similar homes nearby and tell you whether an appeal is worth filing. Have your assessment notice and tax bill handy.

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How to file

How to file in Ottawa County

  1. Step 1

    File the appeal

    Use the method your notice lists, by the deadline on the notice.

  2. Step 2 · before the hearing

    Prepare and submit your evidence

    Comparable assessed values, photographs of condition issues and recent sales where they are public. Ask the appraisal office for the evidence it will use.

  3. Step 3

    Meet, then hear

    An informal review usually comes before a formal hearing; most reductions happen at the informal stage.

Before you file: how to read your notice · evidence that works · informal vs formal hearing · when not to appeal

Questions

Ottawa County questions

Data as of 20 Oct 2026 · Ohio statutes
When is the property tax appeal deadline in Ottawa County?

Ohio law sets it: File DTE 1 by March 31 of the year after the tax year, or the last day to pay first-half taxes without penalty if later (ORC 5715.19(A)). Confirm the exact date on your notice or with the assessor.

Who hears a appeal in Ottawa County?

The Ottawa County Board of Revision hears the first appeal. Filing rules: ORC 5715.19.

What value should I compare on my Ohio notice?

The figure labeled “Appraised Value”. Ohio appeals are argued against market value as of January 1 of the tax year, the tax lien date (ORC 323.11; OAC 5703-25-05(A)).

Your home

Check whether yours is over-assessed

Nearby

Nearby counties

Sandusky County · Erie County · Lucas County · Seneca County · Wood County · Huron County · Lorain County

Sources
  1. ORC 5715.01 (taxable value not over 35%)
  2. OAC 5703-25-05 (35% of true value)
  3. ORC 5715.19 (complaints to the Board of Revision)
  4. ORC 5713.03 (true value; recent sale)
  5. U.S. Census Bureau, county population estimates (2024) and county gazetteer (2024).