Landlord Tenant

I am a tenant in a residential lease in California. I notified my landlord verbally that I would like to terminate my lease 30 days early due to family difficulties requiring me to relocate (I also gave my notice in writing 30 days before I wished to terminate the lease). My lease specifies that I may not sublet without consent and that I may not use the security deposit to pay the last months rent. My understanding is that if I provide a ready, willing and able party (with no legal reason for the landlord to deny leasing to the party) to rent the apartment starting when I move out, that the landlord may not charge me for the last month of rent. The building manager is refusing to allow me to do this. I would like to mitigate my financial damage as much as possible. The building manager is also refusing to allow me to speak to the owner of the building (who is responsible for making these decisions).

I gave notice on my apartment and I requested a walk through. The landlord did a walk through a week before my lease expired but did not give me a list of damages. Under California tenant law, he is required to give a list immediately. I called and asked, but he just stalled and never sent the list. Three weeks later (and after new tenants moved in) he sent me a list of damages and estimates all done after new tenants had moved in. What is the law about this and what happens if the landlord does not give a written list of damages before new tenants move in?

Can a landlord raise your rent when lease becomes due if no structural changes or improvements have been made to the outside? We have leased the property for 7 years?

Is an unsigned lease for apartment rental enforceable by the landlord? More specific, if the lease is for 2 parties and 1 did not sign, how does the landlord enforce, breaking of the lease or abandonment for the lessee that did not sign?

How long can a tenant allow a guest to stay in his/her apartment?