1004 FM 646 is located in Thamans 1st Sub subdivision in Galveston County Appraisal District. The market value per appraisal district is $68,710 for this 1 Bath(s), 1Story, 784 building square feet and was built in 1980. View 1004 FM 646 property features, tax value, calculate mortgage value, nearby schools and similar homes for sale. The current tax rate for the property is 2.67%. The market land value for 1004 FM 646 is $26,420.