As an example, when I was buying my first home, my lender called me three days before closing to let me know that my credit score had fallen to one point below the threshold for my interest rate, so I would either have to take an action that would improve my credit score immediately or accept a significantly higher interest rate. The solution required me to pay off one of my credit cards and fax proof of it to the lender -- not an impossible situation, but certainly a hassle when I was told it had to be done right away and I was at work.
This is the full price you will pay for the home. Some of that price will come from your down payment and the balance will come from the mortgage. To make sure you are paying the right price for the home you want, consult real estate websites and talk with your real estate agent to compare the price you are considering to similar properties in the neighborhood where it is located.
The programs vary in what they can offer. In some cases direct financial assistance may be provided to help you pay your mortgage for a short period of time. Payment plans or reduced monthly payments may be offered. However most of the government programs and non-profit organizations will help facilitate some form of loan modification to qualified homeowners. This will provide families time to get back on track by ideally lowering their monthly payment, reducing interest rates or waiving fees.