Adams County, IowaProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Tax bill mailing
- 2026 values are as of January 1, 2026; taxes payable September 2027/March 2028.
- Payment deadline
- September 2027 and March 2028 installments for the 2026 assessment year.
- Assessment appeal
- Informal property review deadline April 25, 2027; Board of Review petition deadline April 30, 2027.
Exemptions & appeals
View exemption application (opens in a new tab)Exemption filing
July 1, 2027, for the 2026 assessment values shown by the county portal.
Valuation limits
Iowa uses state rollback and levy rules; the reviewed official county source did not state a separate local annual valuation cap rule.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.
More exemption & appeal guidance →