Dependent Status

Which status does my child meet if the following is true - dependent (my husband and I would claim him as a dependent) or independent (would file as single, and I would not claim him as a qualifying child)?

 

1) Age 17, attends high school currently

2) Works outside of the home in the summer months (W2 employee for the City)

3) Works as a 1099 employee for us (manages maintenance, repair and upkeep for our Swimply pool and backyard rentals). 

4) Lives at home, but pays rent to us for his room, utilities, food, etc. Through his work, he pays for over half of his living expenses.

 

His goal is to become independent. I think he qualifies, but it appears gray because of #3 and #4. Thoughts?