So if I have a home that is worth $300,000, then I'm going to multiply that value by 75%.  

So, if using their biweekly paycheck multiply by 26 and divide by 12.

16 Units, Fully occupied, Long term tenants/renters, All the units are in solid condition, could use added value, with minor upgrades, I want to know how to determine the Cash on Cash, and NOI, Capitalization Rate, Gross Rent Multiplier the income annually is just over $125K about $10.400 a month a Door, what else is needed to determine the current market value?

Convince my dads generation to allow me to inherit a few acres right now and I can maybe try to multiply that into more capital and create my own foundation?

@Ethan Kohler you can get an idea of what the taxes will change to after you purchase by looking at the current SEV, looking up the applicable millage rates and multiplying them.The only unknown is if the assessor will just use 50% of your purchase price as the new SEV/Taxable Value. 

By having more houses, you also get a multiplier effect from appreciation. 

Separate Utilities.Price Per Unit $45,833Gross Multiplier 5.05Cap Rate 13.42%Number of Units: 6Construction: BrickIncomeGross Income Rent $54,420Expenses Taxes 2015 $7,531American Water 1,332Elec. 0Maintenance 5% + Vacancy 5% 5,442Gas (heat & hot water or Oil- apts)0Insurance 3,210Est.

I just checked my communities website and it gave me a rate of 2.08 which I multiply times the assessed value which is different than market value.

Those are considered residential real estate and trade based upon comparable sales, not a multiplier of NOI (CAP rate).Don't use the 50% rule ... it is garbage.

You can figure out your CoC return by multiplying your monthly cash flow by 12 months and then dividing that number by the total amount you invested (i.e.