What are tenant's rights in California regarding forced relocation for repairs - if home is also the major place of business?

Yes you can request to stay in the unit. Whether or not you'll be allowed, pretty much up in the air. Reimbursement for work and lost clients? Not...

NEVER refuse to pay rent. If your landlord were my client and he brought this fact pattern to me I would advise him to evict a tenant who did the...

Elderly tenant in rental room: threatens others and calls police unnecessarily...nuisance. Want to evict. Sort of scared of her.

Sine nothing was mentioned concerning rent, the safest approach is to serve a 30 day notice. Because of the extraneous issues, I'd hire an attorney...

Can a person sue someone in small claims and just leave it on their door?

No, they don't, and when judgment is entered against them, and it will be, they may, MAY be able to get the judgment set aside based upon a he said...

Unlawful Detainer California Case.

Oh, free ride. Yeah, no advice from me on this one.

When giving termination notice to a landlord by certified mail, is it considered effective when it is mailed, or when delivered?

No, it's the date of mailing in unlawful detainers that control, especially in light of the verbal notice as well. Sounds to me like you'll be...

Neil is right. She's an employee, not a tenant. A thirty day notice is fine IF you want her there 30 more days.

Yeah, serve her AND her daughter with a thirty day notice of termination of tenancy. After 30 days, if she is still there, you'll be able to evict...

What acomedetions must a landlord provide during remodeling

The only responsibility your landlord really has is to abate the rent for those days your unable to stay at your unit.

Can landlord keep my security deposit till the end of lease although sold the business and the new tenant paid security deposit?

That would be determined by the language contained within your lease. If you are in fact acting as guarantor of the lease, they well may be within...