Now you will be able to use this money to invest in real estate or any other investment vehicle you want for that matter.

Summed up with using real estate as that vehicle. 

The ability to do that is what sets real estate above other investment vehicles IMO.

These are both options that may allow you to avoid the 20% capital gains tax and get out of being a landlord.A Delaware Statutory Investment Trust is a type of investment vehicle that allows you to defer capital gains tax by exchanging your property for shares in the trust.

The SDIRA is a great retirement vehicle that can allow you to keep those in an account that's growing, all while getting the tax benefits as it grows.

On my property is a garage, access to which I gave him to store his vehicle.

I would definitely consider self storage if it's along a road with at least 10,000 vehicles per day traffic count. 21 acres would certainly be excessive for that purpose, however, so I would consider ways to use the rest in a way that would be beneficial to the whole, with a sort of "master plan" development.

In other words, you can’t ‘transfer’ a personal vehicle into your business vehicle and get this tax deduction.

They also alert me of suspicious people/vehicles or if the power went out.In some cases, I offer to do minor repairs to their house, or at a minimum have my maintenance guy clean their yard or cut their grass for free.

As you may know from living in FoCo, if it snows, busy streets may be plowed and require people to move their vehicles or they will get a ticket.