I hire a property management company to take care of all the management side of our properties. 

I know my main investor friendly title company says 70% of those deals that get turned in to them don't close.

In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.

You can get a loan for $30mm, but you need to come with $10mm equity to buy the company.  

What is generally needed to become HUD certified property management company? 

100% have your tenant go through their renter's insurance as well as I would make sure the insurance company is notified that the repairs are already underway, they have received a rent discount, and you covered a placement for a hotel. 

@Remington Lyman any suggestions on Property Management Company in Cleveland?

if you intend to talk to the company make sure the tenants signed release covers that, you might have to send it to them.

Social Media and Online Marketing: Are there any innovative social media strategies or platforms that have been particularly effective for your lead generation or branding?

That is a lot units to manage on your own though so if you want an all-in-one, you just have to set the expectations, but most property management companies will not live up to it in the Northeast.