Some say it’s possible to implement this strategy in Germany, while others claim you can't, due to regulations preventing the sale of mortgaged property before 10 years.There's a lot of confusion and misinformation, and no one seems to have solid information.This strategy is well-documented in the USA, with numerous videos on YouTube.

How can you prevent them from DIY?

What prevents someone which this type of experience creating a Youtube channel or writing a book to share their wealth of knowledge?  

I think screening will be your best friend if you go this route to prevent the most headaches. 2) I'd say the biggest problem renting by room is potentially laws about unrelated persons living in same household.

It's possible that this increase can prevent a lot of people from buying and might even force others to sell.Do not wait for your taxes to increase.

This will allow me to have better deals and can profit on the work as a contractor.Are their any clause which prevent this?

The village the current deal is located in has several zoning ordinances which they claim prevent the park owner from replacing current trailers with newer, or from adding MH's to the two open concrete pads.

Thank you for sharing your story here to help prevent other new investors from falling into the same trap.

There is little to prevent them from banning rentals.    

I have heard that sometimes they don’t and that’s what prevents an assumption from working out.