A mortgage broker is different than dealing with a bank.
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If you walk into @Chase bank, you need to match their criteria in order to get a loan. If you don't, they will reject your loan application.
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On the other hand, a mortgage broker will shop you around to several different banks. If you don't match the criteria for one lender, no problem, they take your application to another lender.
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They keep doing that until they find a lender willing to work with you and that has the lowest rates.
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This tactic is mostly used by people with complicated financials.
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However, regular home buyers can use a mortgage broker as well. I did when I bought my home.. and I feel I got the best deal in town.
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If you are happy with @chase bank, then stick with them.
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If not, working with a mortgage broker might be a good option for you.
