I am just starting to look at houses in the hopes that I will find one that I like that I will be able to afford. My real estate agent has said that I should get preapproved for a mortgage. What exactly is involved in this? I know that without finding out more about the types of mortgages Hamilton brokers are willing to give me I won’t know which types of homes I can afford, so I am hoping that this is an easy process. How do I know which broker to go to for preapproval? Do I have to use that broker for the mortgage?