Property Tax Appeals · Wisconsin
Appeal your property taxes
in Wisconsin.
Wisconsin assessment is municipal — your city, town, or village assessor sets the value, and notices go out in years your assessment changes. The informal step is Open Book, a published period when the assessment roll is open and you can talk the value through with the assessor; changes are easiest to get here. The formal step is the Board of Review, which works like a small court: you file a written objection (state law generally requires notice at least 48 hours before the board’s first meeting), testify under oath, and the assessor’s value is presumed correct until you present credible evidence otherwise. That presumption is precisely why homeowners bring a licensed appraisal — sworn, documented comparable sales as of January 1 are what overcome it.
Set municipality-by-municipality: Boards of Review convene as early as the fourth Monday of April, and you must file a written objection before yours meets — your Notice of Assessment lists the dates.
Skipping the Board of Review usually forfeits further review, since court challenges require having objected there first. Many municipalities go years between revaluations, so an off-market assessment can quietly persist — Open Book in a revaluation year is the moment to act.
The evidence
Boards act on value,
not frustration.
However Wisconsin labels the process, the case underneath is identical: show what your home was actually worth on the assessment date. A licensed, USPAP-compliant appraisal — comparable sales, documented adjustments, a signed opinion of value — is that showing. Start with the $5 check to see if the numbers are on your side before you spend real money.
- Valued as of your assessment date — not today
- Comparable sales with adjustments and citations
- Signed by a state-licensed WI appraiser
- Phone walkthrough — no stranger in your home
- Delivered in 48–72 hours, rush available
Wisconsin counties
Wisconsin questions
The informal window when the completed assessment roll is open for review and the assessor will discuss your value one-on-one. Assessors can change values at Open Book without a hearing — it’s the cheapest win available.
More formal than most states: it’s a quasi-judicial proceeding — testimony is under oath and the assessment is presumed correct until you put credible market evidence against it. An appraisal, with the appraiser’s testimony if needed, is the standard way to meet that burden.
Yes — notice of intent to object, generally at least 48 hours before the board’s first meeting, plus the objection form itself. Your municipal clerk and your assessment notice have the exact dates.
We’re not an AVM, a computer model, or a real-estate agent estimate. Every report is prepared under the Uniform Standards of Professional Appraisal Practice (USPAP) and signed by a licensed appraiser in your state — the same qualification required for mortgage appraisals.