Chapter 16.17 AIRSPACE AND COMMON INTEREST SUBDIVISIONS, FLEXIBLE LOT DESIGN SUBDIVISIONS, AND CONDOMINIUM CONVERSIONS This chapter is included in your selections. Sections: 16.17.010 Purpose. 16.17.020 Airspace subdivisions, common interest subdivisions, and flexible lot design subdivisions. 16.17.030 Flexible lot design subdivisions in the R-1 zone. 16.17.040 Condominium conversions. 16.17.050 Exceptions to condominium conversion requirements.