Legal Question in Real Estate Law in California

No. If your lease limits who lives there, you can give a three-day notice to remove unapproved tenants. If your lease does not limit the residents, you are out of luck until there is some other violation of the lease. Unfortunately it appears you also may be subject to LA rent control laws, which further restrict your ability to evict. Since you may wind up with liability if anything happens on your property, I strongly suggest you invest in some time with a real estate attorney who is familiar with LA landlord/tenant law to help guide you through this situation.

The law allows summary eviction proceedings for illegal drug activity, but not mere membership in an organization, including a gang.