Location: San Francisco, CA
Terms of my sublease: 3 months followed by month-to-month which may be terminated by either party after giving 30 days written notice.
I entered the month-to-month period of my lease and gave written notice on the 8th of last month, indicating my last day would be the 8th of this month. I fully plan on paying the pro-rated amount for this month ($monthly_rent * (8 days / 30 days) = $pro-rated amount). My roommate hasn't found anyone to replace me yet and is saying I'm on the hook for each day of November that the room I moved out of is vacant. When I explained that this goes against the terms of the sublease, he claimed that "it's an issue of equitability that judges freely allow." He claims he is entitled to pro-rated rent for each day of vacancy all the way to the end of November since I didn't tell him I was looking for a new place and that he needed more time to get the place cleaned up to show to prospective tenants. It is worth noting that I chipped in $60 to help him pay for a cleaning service.
Is he right? Is there ever a case where I'm liable for pro-rated rent beyond the 30 day notice period? Do I owe him rent for each day in November that the room is vacant beyond the 8th? Would a judge make an exception in his favor since I didn't tell him I was looking for a new place to live?