G.T.
Read your lease carefully. My tenants sign a one year lease but are allowed out of it as long as they give a 30 day notice because I have a waiting list to draw from and it's easy to re-rent the unit as long as they leave it clean enough to be rent ready. Best thing to do is talk to your landlord and if you can strike a deal with him/her make sure they put it in writing. In CA you arent allowed to collect double rent, so if someone moved out and I moved someone in right away, I couldnt charge the exiting tenant for rent that I'm now collecting from the new tenant.