Real Estate Law
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I don't know of any advantages of doing this. First, you'll have to pay extra insurance for a rental, your taxes will be about 30% higher because you're not filing a homestead exemption on the property, and the bank will likely require more to approve the loan.
If you're going to live there, my suggestion is to by it as if it were a traditional residence.
Maybe your realtor has a grand reason that buying it as a rental makes more sense, but I am not aware of it.