https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202120220SB9
https://www.hcd.ca.gov/docs/planning-and-community-development/sb9factsheet.pdf
"Single (one) - Family Residential Zones Only"
R2 (Two-Family Dwellings) 는 Sb9 에 부적격 Ineligible 하다고 하네요.