If the tenant has not surrendered possession (preferably in writing), and turned in the keys, changing the locks would be imprudent. It would...

Calculating how much to sue my landlord for?

You are correct that your proper remedy would be to sue in small claims court for the damages and (discretionary) statutory/punitive damages...

Is it standard to a commercial sublease to have an amendment clause?

Such a clause would not be unusual. In any event, if your subtenancy is month-to-month, the master tenant could normally make such changes anyhow...

How can I put a stop to harassment by another tenant??

You may wish to seek a restraining order under Code of Civil Procedure Section 527.6. You should also complaint to your landlord, who may well...

Can the landlord cut off the utility after my mother signed termination of lease and was suppose to leave.

It is hard to be definitive without reviewing what your mother signed, and knowing more facts (including whether her tenancy is subject to LA's...

The landlord had no obligation to remind you about the holdover clause and/or the resulting rent increase. If there is any ambiguity about how...

If my lease states that I have to pay the full cost of repainting if I move out in 12 months, is this legal?

You are normally only responsible if you go beyond ordinary wear and tear. Moreover, under Civil Code Section 1953, and lease provisions that...

What is the best move for us in order not to get destroyed/modified my home further and evict tenants asap?

You said you have started the eviction process, but it is unclear what you have done. It would seem appropriate to serve concurrent 3-day notices...

My landlord filed a restraining order against me. Is there any legal action I can take?

You may have the right to seek damages and/or injunctive relief under various laws, including Sections 37.9(f) and 37.10B of the SF rent control...

Landlord threatening during 30 day notice. I have a month to month lease in a house share. I am supposed to vacate 7-18-18.

Independent of whatever the lease says, the landlord can only change the terms by giving proper written notice under Civil Code Section 827, which...