Watching the rent recieved number rise is the funnest part of being a landlord.A rent delinquency is high priority.

Your costs go up every year, so use the rate of inflation to do annual increases in the rent.

He wants to profit a total of $350,000 from the home (I had a real estate agent who I trust look into it and the worth of the home is $389,000 and expected to rise much further). 

Take a look at the graph "National Housing Price Index and Inflation Rate."

However, after 4 yrs Multifamily and 200 units, I have $180,000 in cash flow per year and rising.

I know that many people do not agree with obtaining debt on their investments but I'm just thinking of the time value of money and the current inflation rate when I see these sort of deals.

--Todd Braun, the principal at Lee & Associates, ArizonaRead the article here:https://www.globest.com/2019/08/28/phoenix-rising-a-tale-of-secondary-city-strength/?

Always run your own numbers (underwriting) because there are frequently mistakes and sometimes these numbers are inflated to make the investment look better to a casual observer.Not sure what your question is for the next paragraph.A survey is performed by a professional land surveyor which tells you the dimensions of the lot and if there are any encumbrances or issue with the placement of improvements on the lot.

Those websites estimate it at a high end of $8.50/sq ft for 2019 prices.I've reached out to both contractors and subs [using California's contractor license lookup took], but I'm reaching out as an owner/builder and not a contractor or architect, so I'm thinking there may be large price inflation.

Think of it this way the 100K house you buy that you put down 20K for, that 20k is now sitting into an equivalent of a CD savings account in the bank, you can't touch it but it is collecting " Interest" in the form of the principal of your mortgage being paid down by your tenants. and as described above, if the value of the property goes up then that rise above the 100K you may have paid is a bonus and would be available to you.