Click to Home

Go To Search
What is a Revaluation?
Revaluations are performed periodically to assure that the burden of tax is distributed equitably and uniformly among property owners. State law requires municipalities to adjust assessments if a majority of market sale prices are more than 10% above or below the assessment. The Wisconsin Department of Revenue-Equalization Bureau monitors sales activity statewide and notifies each community if their assessments should be adjusted.
A Revaluation is a thorough review of assessed values throughout the City, when it is clear that open-market, arms-length real estate prices have increased or decreased enough to require that the assessments be adjusted to keep in step. During the Revaluation process, all assessed values are examined and adjustments are made where necessary to "catch-up" with market trends.

In Wisconsin, assessments are simply “snapshot” estimates of value whose chief purpose is to divide the burden of tax evenly and fairly between all properties in a community. Because they are only snapshots and may not be updated for several years, they ARE NOT good estimates of a property’s value TODAY.

As described by Chapter 70 of the Wisconsin statutes and the Wisconsin Property Assessment Manual, property assessments are calculated “en masse” or “as-a-group” in a process called Mass Appraisal. This mass appraisal process is based on analysis of Sale Prices, Construction Costs and Rents over a period of time.

Over time, there are high sales and low sales, but the assessor looks for the range of sale prices which is most common for each type of property to derive assessed values. It is important to remember that the assessor may only react to what happens in the market.

By design, Mass Appraisal does not address day-to-day fluctuations, but rather attempts to “smooth out” short-term variability by looking at the market over a period of years to understand how markets change overall.

This approach is very different from that used by private appraisers, who must rely on a few up-to-the-minute sales to satisfy risk-averse lenders, and may yield widely different results.

Frequently Asked Assessor Questions

Show All Answers

1. What does an Assessor do?
2. How does the assessor value property?
3. What if I think my assessment might not be correct?
4. How do I know if my assessment is fair?
5. If after discussing my assessment with the Assessor's office staff I still think the assessment is not correct, what should I do?
6. What is the Board of Review
7. What happens after the Board of Review makes its decision?
8. What is a "Valid" or Market Sale?
9. Do the market values of all properties change at the same rate and over the same time frame?
10. Why do assessors avoid considering foreclosure or estate sales when calculating assessments.
11. What is a Revaluation?
12. Will I be notifieed if there is a change in my assessment?
13. How can my assessment change when I havn't done anything to my property.
14. Can my assessment change in the years between citywide revaluations?
15. What will happen to my assessment if I improve my property?
16. I have recently built a new home. Will cost to build my property be considered when my assessment is calculated?
17. I have a refinance appraisal- Will you change my assessment to the appraiser's value?