Roommate lease agreement for an illegal in-law. Can I break the lease?

You should prevail on the issue no matter what the document says. If you can prove that it is an illegal unit, then the contract is illegal and no...

Someone who pays consideration for the right to occupy (rent) real property.

Does that mean, if the tenants live in SF and they dont want to move out, the landlord is stuck with that tenant forever?

If the particular unit is covered, typically anything pre-1979, owner needs one of the 16 "just causes" in order to terminate a tenancy.

What would happen if a landlord doesn't want to keep the tenants after the lease is up?

Depends: in regulated city, need a very good reason. Other places, not.

Can a landlord file a fully notice motion for breach of contract a month after the tenant has surrendered possession?

Probably either of you could file such a motion. The court would seem to still have jurisdiction. You should file written opposition to their...

It depends on how bad the noise is. Sorry, each case will vary. Up to a judge or jury.

What has to occur in order for tenancy to be established in San Francisco?

A rental agreement need not be in writing. It can be verbal, or implied. Easier to prove if in writing. The elements are consideration (some...

What is the law about verbal agreement rental in a rent control property? How does it work if landlord past away?

No new law. Old law. Verbal agreements are still agreements. Is it a single family house? Anyway, we can still get him out.

San Francisco tenant's right to protect credit, due to constructive eviction and landlord threatens to report to credit agencies

It depends on whether you can prove that you were constructively evicted. Best defense might be offense. You can sue in Small Claims Court for...

Must I notify the tenant in writing of his right to pre-move-out inspection 2 weeks before if it is stated on the lease?

i believe the CAR lease mirrors the statute. Yes. Two weeks sounds good.