Ext. 411: How to Bulletproof Your Mortgage. Ext. 422: The Credit Report – 5 Things You Must Know to Get Approved. Ext. 433: Find Out How Much Home You Can Afford and Qualify For. Ext. 444: Can I Buy or Refi a Home With Less Than Perfect Credit? Ext. 455: The 5 Deadly Mistakes When Applying for a Mortgage.