But no. Via e-mail, fax, phone ...Ever since the real estate market boiled over, melting down the mortgage industry and its cheap-money feeding frenzy, I've been waiting for one happy outcome: an end to the roar of mortgage brokers at my various doors. For instance, your credit history is not that great. Banks generally reject mortgage applications if the credit score is below 670. With a mortgage broker, you can shop around for a lending company that offers bad credit mortgage loans.