in the business world, i doubt a company will "park" they cash in the bank earning nothing while paying their debt with interest. there has to be a smart way to pay down debt.

Quote from @James Harryton: I recently bought a home in Avon park Fl.

You'll actually learn useful stuff and won't be set back 5 years with an upsell.There's a Summit in Oakland CA at the end of August where there's a ton of speakers that post on BP, but it's not an official BP event.

You want to look around certain north side neighborhoods such as Irving park, Humboldt park, west loop, etc because these areas are appreciating at a high annual rate.

Doing everything for little 2-6 unit townhouses all the way to 300+ unit apartment complexes and 5-over-1 mixed used buildings with 200 units over 20k sf of commercial and structured parking.

Portage Park has been a hot growth area!

It is be difficult to answer in details on a post but I will give you some general info here as a guide:- The legal limit will depend on your location, layout of your house, and parking availability.

If you buy units and park them with a PM you will likely have a much harder time reaching this goal than if you self manage.

We currently use Rent Manager for our property management software for our mobile home parks and other rentals, etc, but use QBO as our main accounting books.  

You can always house hack, buy a multi family, do a trailer park and live in a trailer etc.