Martin County Assessor Office

Find Martin County Minnesota assessor, assessment, auditor's, and appraiser's offices, revenue commissions, GIS, and tax equalization departments. Assessors provide information on property and land tax assessment, property listings, values, valuations, property search, and records.


Martin County Assessor's Office 201 Lake Avenue Fairmont MN 56031 507-238-3210


About the Martin County Assessor Office

Assessor Offices in Martin County, MN are responsible for assessing the values of all taxable property within their jurisdictions. Assessors appraise values of all land and commercial property (real property), and business' fixed asset (personal property). The office determines property tax values, tax rates, maintains and updates the local tax assessment rolls.

Property owners may contact the Department of Assessment for questions about:
  • Martin County property tax appeals and challenges
  • Property tax assessments and reassessments
  • Martin County GIS maps, plat maps, and property boundaries
  • Delinquent property taxes
  • Martin County, MN property tax payments and due dates
  • Assessment rolls and property tax rates
Martin County Property Records

Martin County Assessors keep property records for all real property within their jurisdictions. The Office maintains records which include geographic area, land size, building size and type as well as GIS maps, plat maps, and property boundaries. The Office also maintains public records available for search, including historical assessments of real and personal property, property deeds and bills of sale.

Property Assessments

Tax assessors adjust Martin County, Minnesota real property valuations and real estate tax rates by tracking comparable real estate sales and market valuations. Assessors track zoning requirements, construction permits, renovations, demolitions, working with Building Departments and Inspectors to reflect accurate changes to the property list.

Property Re-Assessments

Real property assessments are reassessed at intervals set by the local government. During reassessments Martin County Assessors update real property values based on changes in market conditions, additions and removals to the property list.

Martin County, Minnesota Personal Property Assessments

Businesses in Martin County are responsible for self-reporting personal property to the office of the Tax Assessor.