Review Of Washington County Assessor Office 2025. The assessor's office determines the fair market value of all property in washington county and maintains the county's parcel records. The tax assessment office of the washington county tax revenue department maintains the ad valorem (at value) real property tax assessment system for washington county.

The assessor's office determines the fair market value of all property in washington county and maintains the county's parcel records. The tax assessment office of the washington county tax revenue department maintains the ad valorem (at value) real property tax assessment system for washington county.