And, if you wouldn't feel comfortable with someone treating your parents like this, why is it cool to do this to someone else's parents? 

FYI: after strapping the pipe leak, the water is not flowing fast affecting other people in the lower floor.Thanks

It also wants a mini split with at least two interior units to heat and cool. property is a tiny home with a full walk-in the basement (no access to the first floor) the first floor has kitchen living room and half bath upstairs has a full bath and bedroom (1/1.5).I've just started a conversation with owner mentioning id like to make an option offered with above-listed work as consideration, he said that he was open to renting to own and would definitely do a lease with labor cost for partial rent.

And invited me to his Christmas party talk about a duck out of water..

Doing very well, expenses very low, paying property taxes, water and sewer.

What I see is them bolt through the asphalt shingles and typically do not even apply anything (caulk) to water seal. 

I can bring a Horse to Water but I can't force him to drink!

The experienced ones on here have probably experienced some of these; such as fire, mold, water leaks, moving beams around, furnaces, etc. 

This house actually didn't flood during Harvey, the water only got up to the sidewalk.

Decent condition both inside and out, on boiler, no central air, and planning for no property management services. 12-month leases, $29,700 per year (including a garage that is rented out to another entity) subtracted by annual expenses (including taxes, insurance, mortgage @ 4.5%, waste/sewer/water) should amount to around $17,782.