Assessor

2026 Citywide Property Revaluation – Beginning November 2025

The City of Middleton has contracted with Associated Appraisal Consultants (AAC) to complete a citywide revaluation for the 2026 assessment cycle. This update will bring assessed values to 100% of current market value and ensure equity among all properties. Last updated: October 29, 2025

Informational Letter Wisconsin Trespassing Law Assessment Appeals Guide Revaluation Overview

Property Inspections

Exterior inspections begin in November 2025 and continue through 2026.
AAC appraisers will take exterior photos and measurements only.
All AAC staff carry a City authorization letter, photo ID, and drive clearly marked fleet vehicles.
If no one is home, a door hanger will be left — no action needed unless interior changes exist.
If you own rental property, please inform tenants of upcoming visits.

Notices & Appeals

Notices of Assessment will be mailed once reviews are complete.
Property owners may discuss values at Open Book meetings.
Formal appeals may be made to the Board of Review.
Open Book and Board of Review dates are included on the Notice.

Why a Revaluation?

State law requires assessments to reflect market value.
Re-establishes fairness and consistency between property classes.
Ensures equitable tax distribution among homeowners and businesses.

Questions about the revaluation?

Contact the City Assessor’s Office or Associated Appraisal Consultants.
More assessment resources available via Wisconsin Department of Revenue.

Assessment Services in Middleton

The City of Middleton contracts with Associated Appraisal Consultants, Inc. to provide annual assessment services for all real estate and personal property. Assessments ensure that property values are fair and consistent for tax purposes.

The assessor may request to view your property to update city records. When a property’s assessed value changes, a notice of assessment is mailed to the owner.

Challenging Your Assessment

Property owners may challenge their assessment each year:

Start with an informal discussion during Open Book.
If unresolved, you may file a formal objection with the Board of Review.

Office Hours

Associated Appraisal Consultants staff are available:

Monday–Friday, 8:00 AM–4:00 PM (excluding holidays)
By appointment at City Hall on select dates:

Thursday, January 22nd
Tuesday, February 3rd
Thursday, February 26th
Tuesday, March 10th
Tuesday, March 24th
Tuesday, April 7th
Tuesday, April 21st