I think the risk with those is that your one tenant may go belly up (think about all the big box stores that no longer exist) and leave you holding a purpose built building that has little value.

We remove, de-lime/clean and store away.

I usually only purchase direct from an owner and not a store.

Several years ago, I had an Amazon store and did most of the web work myself, since I had experience as a web developer and content manager -- even for me it was frustrating!

My father owns a Nail Supply store and has not opened a Business line of credit.

Same as yours.When I hit the 5yr mark for the 2nd time on one this spring and they sent me a new full 1003 app to re-qual along with the opportunity to submit again my PFS and last 3yrs tax returns, the  LTV was less than 33%.  

They work so well, that I became an exclusive distributor for many European countries to spread the good news ;-) So feel free to send me a PM if you need to outfit your European dwellings.There are many threads on this topic (AirBnB, WiFi smart locks, and all the brands) all over Bigger Pockets.One of the many reasons I chose Lockstate is that it has redundant solutions: Real physical key (if all fails)Keypad (stand-alone solution)Remote App (not really a good idea - anywhere)Together these provide 100% guarantee that I don't have to drive down to my Tuscan villa in the middle of the night to open the door for guest I can't make happy anymore :-(The real physical key solution allows me to provide guests the keys in a nearby lockbox when all else fails.

It was a 36" door on the back of the home, my local MH supply store said that was an odd size, that they didn't carry 36" doors and it would have to be special ordered for about $400.

AirBnB is one of the faster growing startups and its iPhone app (not sure about android) used to be one of the top and most active apps.

The Bigger Pockets book store if full of great books: https://www.biggerpockets.com/store