Chapter 19.49 NONCONFORMING USES AND STRUCTURES Revised This chapter is included in your selections. Sections: 19.49.010 Purpose. 19.49.020 General rule. 19.49.030 Enlargement, alteration, expansion or change of nonconforming uses. 19.49.040 Enlargement, alteration, reconstruction of nonconforming buildings and structures. Revised 19.49.050 Abandonment.