Chapter 21.67 GREEN BUILDING INCENTIVE PROGRAM (GBP) This chapter is included in your selections. Sections: 21.67.010 Purpose. 21.67.020 Applicability. 21.67.040 Techniques and Incentives for Development. 21.67.050 Techniques Explained. 21.67.060 Incentives Explained. 21.67.070 Neighborhood and Supplemental Requirements.