Chapter 16.20 RS – SINGLE-FAMILY RESIDENTIAL Revised This chapter is included in your selections. Sections: 16.20.000 Purposes. 16.20.010 Uses. Revised 16.20.020 Subdistricts. 16.20.030 Table of site development standards. 16.20.040 Site development exceptions. 16.20.045 Site development standards – Single-family master plan. 16.20.050 Site development standards – Accessory buildings.