<prompt> Human: One of my very close friends and I are planning to purchase a property together. One of us is going to use the property as a primary residence for the following reasons...- Cheaper rates- Less money down- Guaranteed tenant to startThe only piece of the arrangement that needs deciding is the rent. What is a fair method of charging rent to the person who will live in the apartment. Should we ask a real estate broker for the market price on the property? Does it make sense to allow the person to live in the place at a discounted rate?Just curious to hear if anyone has ever done thishas advice. Thanks!  <response>: Horrible, Horrible, Horrible idea. This is doable, but it costs thousands in addition to a usual lawyer needed for buying a property to draw up a special agreement to have your interest stakes noted and for you two to be on the deed. One person buys, other rents. 