Local Government Code of 1991
Section 198. Fundamental Principles. - The appraisal, assessment, levy and collection of real property tax shall be guided by the following fundamental principles:
(a) Real property shall be appraised at its current and fair market value;
(b) Real property shall be classified for assessment purposes on the basis of its actual use;
(c) Real property shall be assessed on the basis of a uniform classification within each local government unit;
(d) The appraisal, assessment, levy and collection of real property tax shall not be let to any private person; and
(e) The appraisal and assessment of real property shall be equitable.