Who prevents sellers from doing it?

Lien Waivers: Require the contractor to provide lien waivers from themselves and all subcontractors to prevent any future claims against the property.

The longer we prevent that the better for all life on earth.  

You'll also want to have plenty of your own capital in reserve to deal with vacancies and repairs.I imagine a lot of the tenant-landlord problems can be prevented by providing good customer service and having clear standards, both in who you rent to and how you maintain your property. 

Will put the preventative clauses on the lease in the future.

This is why Congress set them up to prevent people from pulling the money out until they need it at retirement age and not sooner.The second question is what type of "cookie" you should put into the jar, which means what you should invest in, And if you need the money in three years I would not invest in stocks or corporate bonds or municipal bond funds which could lose significant amounts, but would likely all recover a few years later.

Just know that the association at some point in the future could prevent it at which point you'd sell.

I am becomming more and more concerned with fraud.  The last rental I posted, I had a woman apply and found out she had stolen someone’s identity when I was working through the background.  I found out when I decided ...

Get a better lay of the land before planting the roots. 

The primary reason I am looking into this option now, is to prepare for future scaling as well as prevent items from falling through the cracks.