Likewise, a rate lock is the bank's risk, not the consumers. I too do not like it, but our market is not a shopping market. They jump and lock a rate when they see it, and then worry about the details and then worry about the details.
That said, we do treat the lock date as the application date since the information required for a rate lock is the same information required under RESPA to be considered an application (and actually the lock requires even more information than an application under RESPA does), thus, in our shop GFE and early docs must be issued within three days of the rate lock.
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I don't repeat gossip, so listen closely...