Passive income How much can be made 10% maybe 100%

Many years ago I went to a seminar by Guy Kawasaki, he was talking about investing in real estate. The lessons I did learn did benefit me many times.
The key is to buy a run-down property, with livable conditions in an excellent neighborhood. I have a few different properties now on my list of buys, and within 12 months will double or even triple the oo investment. 
At this time when the world is running crazy about coronavirus, the best and safest investment is in property with excellent potential.  
The property is allocated in the best locations in Warsaw, just diamonds in the ash. The key problem for potential buyers is to find a crew since there is a huge shortage of construction workers, we have the advantage since we have our own crew and can do the work fast and at a low price.
You will need little money to join me at the same time the property will secure your investment and a quick buck will be made. 
Of course, we have a business plan and we plan to expand our operations.