Property Assessment Notices 2026

Mark your Calendar!

May 1st

The 2026 property assessment notices will be mailed on May 1 and live on Assessors' webpage after 5 p.m. 

Open Book & Appeals

The open book period will be from May 4 – 8 with an additional week offered to file appeals from May 11 – 15. To correct an assessment record, please contact us at:

• Email: openbook@cityofmadison.com
• Call: 608-266-4531

If your property details are correct but you disagree with the assessed value of your property, you will need to file an objection with the Board of Assessors by 4:30pm on May 15, 2026.

May 18th

Our first Board of Review will be on May 18th. Please find additional information about that process here: https://www.cityofmadison.com/assessor/annual-process/open-book-appeals