USC Budget Appeal

Is it difficult to get an increase in the cost of attendance? I was told I would need to submit a budget appeal and they will either approve or deny. I would request an increase because of the cost of housing and dining (a more expensive housing option or meal plan). Assuming I have documentation for the increase in cost, is it guaranteed that my cost of attendance will increase? I need to know for a scholarship.

What kind of documentation is required? Once I am assigned housing, how will I show how much it will cost? Will they send me some kind of document showing how much it will cost?

Any help is appreciated! Thanks!

This kid is trying to choose between USC and UWashington. Can anyone please weigh in? Thanks.