For example:Purchase price: $200,000Down Payment: $20,000Amount Financed: $180,000 @ 5%Monthly Principal and Interest Payment: $1,187.92 x 240 monthsMost sellers will multiply the monthly payment by the number of payments and smile with they come up with a big number ;)

As the demand from investors has increased and the supply of vacation rental properties has multiplied, jurisdictions have increasingly restricted the issuance of short term permits. 

There really isn't a huge difference between windows, doors, HVAC, mechanics, electrical, or plumbing from homes ranging from 900-1400 square feet, these don't really multiply until the home gets big enough that you need 2 electric boxes or 2 condensers/furnaces, etc.

Some quick math, if your home was worth $500,000 then we multiply that by 80% = $400,000.  

My goal is to add 1 property to our protfolio each year, until we are in a position to multiply this; so I think this is doable :)

., current entitlement charged), and multiplying the result by 4.Back to the reno loan matter, one unsavory factor is that all the moneys and work need to flow through a GC.

I know the basics... like multiplying the lot dimensions by 0.75 to calculate buildable square footage.

The rule multiplies the ARV by 70% to calculate the value of the property before repairs.

There are other metrics you can use, gross rent multipliers and price per sf come to mind!

To ballpark a property bought in the last couple years you could divide yoru price by the last buyers price and then multiply that number by their taxes.