I recently did a search on Google for "mortgage audit" and came up with 369,000 entries.  I am amazed at how many "forensic loan auditors" there now are.  I know of companies charging anywhere from a couple hundred bucks to ten thousand.  I am a practicing attorney and my focus is on mortgage litigation and i think the mortgage audit is a joke.  Most results are wrong.  Even when there are technical violations, the borrower likely does not have a viable claim due to other reasons. 

If you really want to know if you have a legal case, talk to a laywer.  Do not pay anyone any money for an audit that is supposed to somehow give you leverage with the bank.  It doesn't.  Sorry if this offends anyone, but i get several calls a week from people who are excited due to the false hope they were given and have spent money they did not have for some auditor to tell them they have a great case.  Please save your money.