Chapter 20.630 DOWNTOWN DISTRICT This chapter is included in your selections. Sections: 20.630.010 General Purpose. 20.630.020 Building Lines. 20.630.030 Rain Protection. 20.630.040 Blank Walls. 20.630.050 Maximum Building Heights. 20.630.060 Parking Control. 20.630.070 City Center West Employment Overlay. 20.630.080 City Center Waterfront.