Full Documentation loans are the most straight forward loans in the mortgage business, they also generally require the most documentation.  All income, assets, and payment histories are verified, and borrowers must fit meet strict criteria. Rarely are any exceptions or flexibility allowed.

If you are obtaining a mortgage through full documentation, be prepared to provide the following information:

• Two full months of year-to-date pay stubs.
• Your last two years W2 forms.
• Your last two years tax returns, and/or a signed 4506 form.
• Your last two months bank statements, and/or statements from other asset accounts (including savings, 401k, IRA, other retirement accounts, cash-value life insurance, stocks, bonds, etc).
• Payment history for your current mortgage, or rental history. If this information is not on your credit report, be prepared to provide canceled checks.
  

Your lender / broker will also have to obtain a Verification of Employment and potentially other verifications depending on the documentation you provided.

And, as with most other loan programs, it will have to be proven that there is clear title to the property, a suitable appraisal will have to be done, Homeowner's insurance will have to be acquired, etc.