SB 10 is voluntary; but for the cities that do choose to use it (or selectively use it), now neighbors can’t sue to stop anything 10 units or less from going up

SB 10 is voluntary; but for the cities that do choose to use it (or selectively use it), now neighbors can’t sue to stop anything 10 units or less from going up based on environmental concerns. It’s big for that reason, where localities would often be sued out the wazoo for environmental concerns for daring to rezone a single family lot as multifamily SB 9 is paradigm shifting: every lot in California that’s single family zoned can a) be split into two lots of equal size AND/OR b) each resulting lot can now have up to 2 units AND c) if the lot is compliant with all other criteria, each lot is still able to have an ADU built in addition to the extra unit, per statewide ADU law passed two years ago. So you can potentially turn a single lot into 6 units. Or 3 without splitting the lot. All of this is by-right, too. Design approval and local councils can’t stop it, and I believe they must be approved within 90 days, too.