A San Francisco man is fighting to stay in his apartment, after his landlord suddenly hiked his rent from $1,800 a month to $8,000. The tenant has appealed this incredible rent hike to the city, but it may be too late. He may find himself out of his apartment before the city's rent board decides if it's legal or not. One thing is certain -- it's one of the highest rent increases in recent history in San Francisco. The apartment building sits in the heart of North Beach, on the corner of Columbus and Scotland streets.