I wonder if other mixed-use landlords have clauses in leases that address the mixed nature.

What kind of taxes he will incur depends on the nature of your "partnering." 

They are by that very nature going to have higher risk based just on that fact alone. 

Is there an easy way to track natural appreciation?

I definitely have some insight on what type of large markets to invest in that are metro in nature that attract not only business travel but also have multiple industries as to keep the overall investing strategy strong.

It speaks for the humble nature of locals that they are happy.

Also the nature of the current "access" -- whether it has been hostile or permissive.The good news is the title insurance carrier has allowed the claim and will likely pursue an agreement with the necessary property owners OR fight the legal battle if necessary.

You picked the wrong kind of property to start in as a 3/3.1 townhouse is not ideal for room hacking and is more residential in nature which is why you should sell it and take the proceeds and deposit money and look for a two-family where you and your brother can live in one side and you can full rent the other side - maybe even as a mid-term rental to 2x the rent.

Concrete is naturally pourous.

The Fed's intervention, through increased interest rates, is intended to curb this excessive growth and bring the market back to more realistic levels.It's important to understand that a correction is a natural part of economic cycles and does not necessarily signal a crisis.