Here are some ways to unintentionally part ways from your favorite agent, in some cases, with no option to turn back the time when you don't get the opportunity to make another choice.
See a home without your favorite agent arranging it.
Intentionally or unintentionally reach out to a business (lead source) the agent or their firm is associated to & inadvertently tack on a referral fee to your agent (or a 2nd).
Getting fired by your agent & agents refusing to work with you
Shifting parameters outside the agent's coverage area or expertise
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