How do I compensate a tenant for loss of a parking space as a reduction of service?

I agree with Jethro. And, it will be at the current market rate rent. I suggest that you negotiate with her. SAM

How to evict ex-boyfriend from my apartment before landlord evicts both of us?

We can help. I provide a free consultation. Please email me: [email protected]. Best, SAM

What is the move-out date if the tenant's 30-day notice is sent on 02/18/18? Must I pro-rate the March rent. Rent is due on 1st.

3/20 is last day. Should vacate by end of that day. Can pro-rate then rent. If you accept rent for a period beyond 3/20 you void your notice.

If my apartment is inhabitable per CA state law, can I break my lease and receive my deposit?

Yes. But, getting landlord to agree to that may be difficult. May need to sue.

You cannot notarize a signature after it has been done when the notary was not present. However, you can re-sign it in the presence of a notary now.

Can I get out of my contract since the landlord in breaching the contract?

Need to know what the neighbors' lease says. If it prohibits smoking, too, than you can pressure landlord to commence eviction.

I was late paying rent my landlord filed nlawful detainer now counter request non jury trial so does that mean for sure trial?

I think you should settle, at least from this short summary. You can get a volunteer lawyer at the settlement conference. Get rent waiver, some...

What do I do with my landlord for returned check?

I agree with Jethro Busch. What city are you in? Without heat you should be entitled to some recovery.

How can I get out of a commercial lease?

Landlord does typically have a strict duty to mitigate. Seems like you will be on the hook for something.

Do I refund a Rent Deposit 2 weeks after Sublet agreement was signed and keys given?

You need to "mitigate your damages". That means, find another subtenant willing to pay what he did, or less. Then determine your loss. Rebate...