Closed on new new home last month. Initially applied for a VA loan through PNC and USAA. Both offered $50K short of what I wanted to borrow. I wanted approval for $250K.
Realtor recommended a mortgage broker. I didn't have much faith in a person recommended by a realtor, since their incentive is a referral kickback. I figured what the heck. I applied through the broker just to see what I could get. Well, I got all the money I wanted at a better interest rate - 3.5%, 30 year, fixed.
One thing I highly recommend - lock in the rate, and
get it in writing from the broker. This should not cost anything. I have a feeling my broker may have "said" he locked the rate, but did not. By betting rates would continue to fall prior to closing, he could make money on the difference between the "lock" he quoted me and the lower market rate at closing time. Don't know for sure, but I never received any lock rate in writing. If this did happen and rates climbed prior to closing, I could have been out that "locked" rate.
My mortgage broker also told me there would be no funding or origination fee. The initial Good Faith Estimate showed $0 for origination fees. When I received the HUD-1 days before closing, there was a $995 origination fee. When I pointed this out, they changed the origination fee to $623. I didn't push the issue, because I really needed to close. It wasn't something worth holding up the transaction. I'm still debating whether to report it to state mortgage regulators, since there's a good chance he's doing this to all his clients. I researched the issue and found that the GFE for origination fees should not change at all on the HUD-1.
If you use a mortgage broker, ask him how he receives compensation for making a loan. Some receive an origination fee (paid by you). Some receive a fee from the entity that funds the mortgage. I think they can also make a loan at a slightly higher market interest rate, and then sell the loan at the lower market rate, receiving the difference in the form of a payment from the funding entity. I don't believe they should not be compensated by you AND the finding entity.
Bottom line - if a broker or anyone in the process tells you something that sounds too good to be true, get it in writing. It can even be something as simple as you emailing a question and getting a response. That locks (get it?

them into what they said. It can also be used to pursue legal action afterwards.