What if they break the lease is the most common one, accounting nightmare was another.

Last think to consider when purchasing a home is utilizing a 401k loan if you have a 401k established.

Even if you own in cash, utilities, insurance, and taxes cost you money every day you hold.

Here is a common one I've seen stocked.

Like they want to file a Quiet deedRE is becoming over run with  OOS  BRRR ROI  COC etc etc.This type of thing is very common though in Aviation there is an abbreviation for nearly everything you do in Aviation. 

Another option to consider is using the space for Airbnb or mid-term rentals.Here in Texas, basements aren't common, but I found a home where the third bedroom had its own entrance right off the driveway.

I won't be charging him any rent, he will just pay for the utilities used for that period. 

I am afraid he's part of illegal gambling ring in bay area from certain regional ethnicities, these gambling casino ring was common few years ago.

Rent assistance is also provided by other factors such as number of bedrooms and if the Landlord is providing any of the utilities.

After talking with planning they mentioned that utilities were 2 miles (10,000+) ft away.