So very simplistically, a Starbucks with a 20 year triple net lease will trade at a 5 cap, for example, but the same exact real estate with a Mom and Pop coffee shop with a 3 year nnn lease might trade at an 8 cap.

You can usually at least double if not triple your investment over a 5 year period.

You need Yardi Appfolio or something with triple net CAM reconciliation, etc.

On the other hand, a mentor with a seven-figure+ net worth, a huge portfolio of residential, multifam, triple net, etc., and decades of experience in every area of RE can bring a ton of value to you, but that means you'll have to bring a ton of value to them, too--because their time and experience is so much more valuable.I'm constantly approached by beginning investors with no real estate experience who want to "partner" with me, or want me to "mentor" them, but who have zero idea how to make it worthwhile for me.

Butler A few thoughts:First, I find it useful to track successes--even if the success is very small.When an investor is first starting out, a success might be as simple as having their first meeting with an agent, or accurately analyzing their first property (and having a pro confirm that their analysis is accurate)....for a more experienced investor, a success might be closing on a $15 million triple net asset.The size of the success isn't really the point... 

You’ll probably find a 30 year loan at today’s rates will have payments just as high as you’re going to make for 14 more years but triple the interest expense. 

The property is in a good area and has tripled in value over the years (current value 650K eur).I’m looking to take out a second home loan to purchase an apartment and di short let’s with in the capital city.

I was told I was crazy to set up shop in the Cleveland markets 10 years ago, well how wrong they all were. 20 -30% net caps on top of the double, triple or more in value.

If that were the case then I should be able to triple that since there are three units, but that seems WAYYYY too high. 

Personally I would contract it and double/triple check during your due diligence period.