Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 23, 2026 and October 9, 2026.
Jefferson County, Wisconsin, has about 86,000 residents (2024 Census Bureau estimate). The title to a parcel in Jefferson County is in the deed records of the Register of Deeds and its taxable value is set by the town assessor; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, city permits, evictions and court cases, records requests and common questions.
Related guides: Jefferson County public records, Jefferson County arrest records, Jefferson County warrants, Jefferson County inmate search, Jefferson County criminal records, Wisconsin arrest records and Wisconsin inmate search.
Deeds, Mortgages and Liens in Jefferson County
Who owns a parcel in Jefferson County and what it sold for are in the deed records of the Register of Deeds, with every lien or mortgage against the land.
SearchSystems opened and checked the Register of Deeds' page at jeffersoncountywi.gov/register_of_deeds/property___real_estate_reco... (page title: Jefferson County, WI), phone 920-674-7236, which answered when SearchSystems opened it on September 24, 2026.
Assessed Values and the Tax Roll in Jefferson County
The value each parcel in Jefferson County is taxed on is set locally, by the assessor of each city, town and village, not by the county. Wisconsin property is assessed by each city, town and village, and the state equalizes the values across municipalities.
The county property tax office's page SearchSystems verified is at jeffersoncountywi.gov/planning_and_development/land_records_online/... (page title: Land Records Online), phone 920-674-7254, 311 S. Center Avenue, Room C1040 Jefferson, WI 53549, Monday - Friday 8:00 am - 4:30 pm, which answered when SearchSystems opened it on September 23, 2026.
Permits and City Records in the Cities of Jefferson County
Building permits, zoning and code cases inside a city are the city's own records. The cities in Jefferson County with a SearchSystems guide to their offices, with the city page SearchSystems verified:
- Fort Atkinson: the city hall page SearchSystems verified is at fortatkinsonwi.gov/_T3_R88.php, phone 920-397-9901 (verified September 25, 2026).
- Lake Mills: the city hall page SearchSystems verified is at cityoflakemillswi.gov/contactus, phone (920)648-2344 (verified September 26, 2026).
Evictions and Court Cases About Land in Jefferson County
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Jefferson County Circuit Court, and the file is public unless sealed.
The court records page SearchSystems verified for the county is at jeffersoncountywi.gov/courts___legal_services/criminal_court/index.php, phone 920-674-7153.
Asking a County Office for a Record
Under the Wisconsin Public Records Law a county office must answer a request as soon as practicable and without delay; the law sets no number of days, and it may charge the actual cost of copying and locating, with no charge for the first $50 of locating. The county records request page SearchSystems verified is at jeffersoncountywi.gov/sheriff_br_law_enforcement___public_safety/op... (page title: Jefferson County Open Records).
Frequently Asked Questions
Who records deeds in Jefferson County?
The Register of Deeds, at jeffersoncountywi.gov, phone 920-674-7236. Deeds, mortgages and liens on land in Jefferson County are filed there.
Who sets the assessed value of a property in Jefferson County?
The assessor of each city, town and village.
Where are evictions from Jefferson County filed?
In the Jefferson County Circuit Court. The file is public unless the court seals it.
How is property assessed in Wisconsin?
Wisconsin property is assessed by each city, town and village, and the state equalizes the values across municipalities.
Is this the official Jefferson County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.