Experience has taught me it can be costly when roommates squabble - - Unlawful Detainer + damages > $8kNever again!

But, you can also batch and rank applications and process them in order of rank, as long as your ranking criteria is not unlawfully discriminatory and you are clear with all applicants that you will be accepting applications during a defined time frame and using that method.

The police will likely tell you it is a civil matter and that the owner of the property will have to file an unlawful detainer action in court.  

Until which time it's determined if any of the interlopers (squatters) have any ownership interest, you won't be able to know what form of legal possession tactics to take, whether unlawful detainer eviction, partition and QTA, forceable detainer or ejectment.

Engaging in acts of violence or threats of violence, including but not limited to the unlawful discharge of firearms, prostitution, criminal street gang activity, intimidation, or any other breach of the Lease that otherwise jeopardizes the health, safety or welfare of the Landlord, his Agents or Tenants.

We had a tenant that took us to court for unlawful entry she was awarded damages like 3 times the rent, we knocked,announced maintenance when we went in,  we had a water leak under her kitchen sink, she was a day sleeper, and a cop.

After submitting an offer, finding partners and using other people money you don't have acquire is very risky, not to mention wasting everyone else time and money, and maybe unlawful.   

The current CA law is that unlawful detainer actions are publicly searchable unless they are resolved within 60 days of the first filing.  

So I'd leave my lease to no unlawful activity.

I know it's unlawful to deduct the deposit for days she has off the market although other do.