Primary Residence 1031 Exchange

[Jared Asch]

Do you know of anyone who converted their primary residence to a rental property (in San Francisco area so selling for more than $2 million) before selling it later under a 1031 exchange? Obviously, only makes sense to defer gains under 1031 if someone has more than the $500k capital gains that a married couple could already exclude. How long would they need to rent it for? Term on sale?