Full disclosure, I sell the All In One Loan and i personally use it to multiply real estate. 

There’s nothing to multiply your investment in a flip in these areas — especially at the bottom of the barrel. 

Instead of annualizing the GRM multiplying the rent x 12 & dividing the GRM by 12 to get the value do it monthly because it's easier to understand but yields the same income value. 

.), I've been using the following two methods to quickly triage whether the numbers might work: (1) Use an Effective Rent Multiplier and then compare it to the price to see if it's in the ballpark.

Multiply that x number of months you'd have this guy stay.. 

Just like sellers and listing agents might assume an FHA buyer has a rock bottom FICO, they might also assume they are barely scraping together 3.5% down, since many do in fact multiply target sales price by 3.5% and save up exactly that much money, unaware of closing costs, that things break in homes after you buy them, etc."

Multiply by .8 and you'll know what 80% of market value is.

However the "1% rule" is a form of gross rent  multiplier.

Hi Alan,I convert  two  SFR into duplexes in Barrie. its a great way to improve  cash flow and add value. just like  the rest of the GTA, prices went up dramatically with multiply offer craziness Toronto style, until around March /April 2017. 

Calculate the NOI by multiplying the number of spaces by the lot rent, and then multiply by 12 months, subtract the expenses (can range from 30-50%, that % depending on the variables above).