Take out agent fees as well.He’s not starving, but keep in mind he’ll be taxed heavily. At that income, it looks like take home after federal, state, and local taxes is $487K.
$5K/month should be doable. $10K/month is a little steep for his income, but still very much doable for the average Joe. It looks like the average rent in SF is ~$3K/month which isn’t as bad as I expected. He’s not going to be driving any lambos with that take home though.