Your local office does not know the formula for choosing CDR' s nor do they have any authority to decide one is not needed. One employee who works the CDR list might have a guess, but even that is doubtful since this is centrally controlled.

I don't think you will ever find out why you were selected so soon. Could be a programming error. I am certain however that it has nothing to do with your decision to buy a house. SSDI does not have any access to that. And it has zero to do with a decision about whether or not you are disabled.

Fill out the form, make a copy, send it in and go about living your life the same way you did before. You need to also figure out how to not obsess over something you have no control over. May not be easy.