Based on 12 Baltimore SFR VS.  2 LA homes, Baltimore model generates 800k more in CF = 800 k more of taxable income. 

To get the value of the property in a case of taxable event you would have to order an appraisal. 

With an IRA, you can take money out and as long as you put it ALL back in within 60 days it is considered a non-taxable event.  

—The amendments made by this section shall apply to taxable years beginning after December 31, 2017.Effective date.

You will roll those profits into the next deal and your taxable amount could be reduced IF the money is working for you.  

When my financial adviser at a major Wall Street brokerage firm advised me to maximize my contributions to my retirement and invest an additional 10% of my income in taxable accounts (1990s), I discovered it worked and tried to spread the gospel to others.

I continue to max out my tax advantaged accounts every year, and rather than putting the rest in taxable accounts, I put that into real estate. 

I understand why areas, especially in cash strapped CA don't want parks that don't generate the same taxes as stick built homes, but why not allow developments with smaller lots, where people can buy lots and have manufactured or modular units, thus becoming taxable such as stick built?

Distributions from corporations however, may be taxable to the person receiving the distribution if the corporation has positive earnings for the year.You should confirm that your LLC is disregarded for tax purposes."

When you sell a sfr you will be able to adjust against your taxable income IMHO you need to strategize how much income u need at retirement and work on that goal whether using real estate or mutual funds or a combination of both Caleb Heimsoth I agree with your strategy.