One bedrooms in Santa Barbara can be pretty expensive, especially in Isla Vista. I haven't heard of a one-bedroom in IV for less than $900 a month, and most places rent would be over $1,000/mo. It is much cheaper to share a place with others. I lived in IV for 2 years, both years in different 3 bedroom tiny apartments with 5 other girls. There are some places that are cheaper, but the more people you live with, the lower rent you'll pay. If you really want to live alone, I would recommend renting a room in Goleta, which is a short busride or bike ride from UCSB. Then you could be paying as low as $600/month. Carpinteria is cheaper and a really, really nice little town, but it's a good 20, 30 mins from UCSB, and even longer in traffic. The lower rent might not be worth the extra you'll be paying for gas?