Chapter 12.72 FILBERT/WINESAP SUBAREA REGULATIONS This chapter is included in your selections. Sections: 12.72.010 Purpose. 12.72.020 Thunderbird Estates mobile home park overlay – R 9,600 zoning south of Winesap Road at 3rd Drive SE. 12.72.030 R-AC, OP, NB zoning at Filbert and Winesap Roads.