in the 27 years i have owned properties the only thing i hired someone else to do was a new 300 amp service for my apartment bldg( only because i was not allowed to do it) and a company to make and install the granite countertops in the house i'm in now.
besides the hvac knowledge helping out with many repairs and projects i worked with my father who went to school as a kid for cabinetmaking and kept with it as a hobby his whole life.
other things like tile flooring and rebuilding my inground pool i just figured it out myself.
probably could not afford half the stuff i have done around the houses if i had to pay someone else.
just put a bid in yesterday on a house down the shore, if i get that the projects will begin again..........