Well, the house needs a decent HVAC tech to fix/replace whatever is going on with the furnace, or possibly a plumber to fix/replace the gas water heater. Or both, who knows.
Carpenter to build a new deck.
Dehumidifier in the basement, after you clean up all the existing mold. Possibly more is needed, depends what's going on.
Electrician, or you learn what you're doing well enough to clean up a bunch of it.
Foundation contractor to inspect and repair foundation.
Real estate lawyer to advise on the zoning.
I would pass. If the place is currently occupied, please report it to the fire marshal as that's a serious safety risk and the current owners deserve to be raked over the coals. If its vacant, then no need.
Edit:
I completely missed the inspection report you attached. Have looked at it now. RUN. Between the foundation and the crazy bad DIY electric, that tells me the house has been neglected and abused, which means who knows what other problems you'll find.