LaGuerta has a diploma from South Miami University. There is no such University. Miami has around 59 universities, colleges and other vocational schools.
Deb moved into a bungalow on the beach where Dexter solved a murder suicide. She bartered a lower rent (3/4) but these types of places usually sit vacant for a long time due to the situation. The second stipulation was that Deb clean the blood herself. This would be costly because it must be done by professionals by very strict guidelines due to the biohazards. There is no indication of that when you see her setup