For example, I purchased a property because of good economics and turns out in 5 years it was surrounded by major tech and business centers followed by a lot of residential development which tripled in value and doubled rents.

Regarding a master lease or triple net lease.

Depending on how desperate people get, sometimes triple. 

I own land that has almost tripled in value last 5 years but do not have funds to build vacation home on it.

In MD you can be liable for triple damages if you do not follow the law.

One thing we can be pretty certain about though is that the Federal Reserve is going to double and triple down on driving up inflation numbers over the next several years in an attempt to stimulate the economy and drive the recovery as quickly as possible.

I think most investors look to double or triple their investment when doing value add improvements.  

One I like is using it to buy properties in a STR market where the gross income is usually double or triple the P&I payments.Hope this gives you some insights Best wishes and good luck!

However, this'll double or triple each friend's capital in the form of equity.

A duplex, triple or fourplex are other options with 3.5% or 5% down.