Chapter 20.912 FENCES AND WALLS This chapter is included in your selections. Sections: 20.912.010 Purpose. 20.912.020 Applicability. 20.912.030 Permits required. 20.912.040 Exemptions. 20.912.050 Location and Height of Fences and Walls. 20.912.060 Prohibited Fences and Fencing Material. 20.912.070 Fences and Walls in Planned Developments. 20.912.080 Sound Walls.