If they're within a few dollars of one another, I'd multiply the lower $/ft times the square footage of my investment property and use that as my ARV.If the two $/ft numbers are significantly different, I'd carefully compare the comps to the investment property.

Now multiply those hours by a reasonable rate. 

Many respected experts will typically advise using a multiplier somewhere around 0.45 and 0.50.

Why multiply by 0.7? 

Multiply that by OPM and you have yourself a winning formula. 

There’s a multiplying effect when you rehab a property.

I've also heard that mortgage company will look at what market rents are and take a view on that, rather than literally multiplying rent x cap rate to arrive at a valuation.

I am familiar with the EBITDA multiplier and will also Google how to value landscape design businesses.

Now multiply by 3-5 to see the value of $300-500/ cash flow on just one property.

Multiply this by 2400 to compare to a more traditional interest rate so 0.14% on the Sienna.