Can I charge him my late charge which is currently $100 after I get the rent on the 19th? 

Quote from @John Underwood: First thing to do is check with the city or county to make sure the ADU would be permitted to be a STR.The municipality has an application process but initial indication is that it's not overly restrictive in the area I'm looking at. 

Many on bp have shared stories of high desert fixers gone sideways  If you can find a licensed gc — in my experience they will charge 10-18% on top of the subs work.  

Oakland in general has large demand for LTR, especially in the family-friendly neighborhoods, so I wouldn't be surprised if you are already seeing many applicants on day 1.

insurance companies are also charging extra to cover ice machines. 

I took a look at the listings on their website.Most of their inventory is 30+ min from the 'downtown' area.Seems like they charge $400 - $600 a bed in Dallas and Houston + a move-in fee to the guest.It would be interesting to know what their management fees are.You should be able to make money based on those numbers if they have a nice occupancy rate.I personally wouldn't rent from there because I prefer my own space but there are definitely people out there that like to save a couple hundred on rent or even enjoy having roommates(Company) around.Best of luck!

California charges a minimum tax of $800 a year per LLC, and more if you have gross receipts in excess of $250k.

Loans are underwritten by Fannie Mae’s Desktop Underwriter (DU) or Freddie Mac’s Loan Product Advisor (LPA) which based on the loan application will decide on reserves needed. 

I'm currently looking at using a company and they charge $2000 month for managing the campaign plus a ad spend for 4 properties.

This saved me about $10,000 from the cost my local electrical supply company was going to charge.