Get your interest rate and closing costs in writing as soon as you decide on a lender to work with. Get your lender to give you a commitment in advance of all of the costs that will be involved with your loan. Find out if the refinance loan you are getting has a pre-payment penalty as well. Sometimes lenders will leave out important information like this, if they think it might scare you away from refinancing with them.
For both new buyers and refinancers, it's important to understand what a no-cost mortgage loan or a no-cost refinance loan really means. "No cost" does not mean that closing costs (also known as settlement costs) have been erased. It means that the closing costs will be factored into the interest rate associated with the loan. Of course, this also means that, all other things being equal, the interest rate associated with a no-cost mortgage will always be higher than one where the borrower pays the closing costs up front.
If you plan on moving out of your existing home within the next few years, it may not be beneficial for you to refinance. Make sure you let your mortgage specialist know your future plans.
Be Prepared. You'll probably be asked for more information and documentation after you submit your application, but before your loan is approved be prepared to document your income and assets. Answer any questions and fax documentation to your loan representative as soon as possible.