If you plan to obtain a mortgage, please be advised that the loan officer will typically require 2 years of tax returns, 2 months of bank statements, and your most recent paystubs.
If you are self employed, you must have two years of Schedue C tax forms (profit and loss).
They will also run your credit. Every lender has different requirements for credit score and some will be able to accept lower scores than others. However, the minimum score is 580.