Certain things like airbnb can for sure increase your return on a rental, although the cashflow is going to be less consistent than a long term rentalIt sounds like you either have a smoking deal (which is possible since you essentially have two investment properties on one note), or you could be leaving out some expenses, like captital expenditures, vacancy, maintenance, or property management, in your numbers. 

A lot of QIs like us  who have been around a while saw this in the ramp up to 2008 (before the "dark time") so they'll have taken the steps to prepare systems that give you both the advantage of experience  and the all so important "human touch".You just gotta vet and go with your instincts. 

(6) How many people living with you smoke?

Many of those deals came from connections from me performing on flips that an otherwise newbie wholesaler would not have had access to.It also helped having that experience to nail the numbers instead of the typical shot in the dark guess on rehab numbers and exit values (or straight out lies in many cases).Lastly, wholesaling is NOT RE investing, it is a marketing business. 

I also don't have much experience with basements, so I'm a bit in the dark there.Here's my advice: don't worry about missing the inspection contingency deadline.

The Dark Art of Seller Financing Explained

do they smoke inside?).

Just make sure when they moved in that all the light bulbs worked, fresh batteries in smoke detectors and new filters.

Only real expense is water but she can be annoying as she smokes and goes inside and out often. 

It has also been reported she, along with other adults are smoking weed on the premises; she assures us she is not.