Sometimes called "DSCR" loans and a variety of other names. 

Mail the return and payment to:     Internal Revenue Service     P.O.

I'm looking for advice on where to find International lenders.

., I like how @John Karg is tossing the Internal Rate of Return components at you so you can get a true perspective of how that house is performing and can perform. 

@Simon Smith hi Simon, some call sunny isles “The Billionaires Beach” Miami is now home to the MOST millionaires and Centi Millionaires ($100M+) this does wonders for our market.

Also connecting with him on Facebook and his group called "AirBnb Masterminds".

Or do you just have to call the listing agent for each piece of land? 

MLS, Zillow, Cold Calling/lead generating, Realtors, Mail Marketing, SEO/Online marketing...If you are going direct-to-owner (aka sourcing your own deals), you'll have the most and best options. 

Prior to ShowMojo, everyone called into the office and we would answer the same questions over and over again.

@Bryan LaFor us, the first step in screening is the initial phone call and in-person interaction when they tour the property.