Use one of the boxes below to look up an assessment for any Fresno County property. Data is from 2007-08 annual tax roll and does not include recent updates. Assessments for homes bought since 2005 may be higher than market value and qualify for a reduction. Here are instructions for requesting a reduction in Fresno County. Residents of other counties can use these links: Madera | Merced | Kings | Tulare | Mariposa: Call (209) 966-5719.