@Scott TrenchI like your post and your style.

They work at night, plus they push notification to my phone whenever an event is detected. https://www.amazon.com/Wyze-Indoor-Wireless-Detection-Assistant/dp/B076H3SRXG

Simply using an outdoor grade wire in place of the indoor romex does not remedy the issue. 

Depending on the size and desire you may be able to rent it fairly successfully since it is a full home with no shared indoor space.

Bought a mobile home and wrote a 5-year note to a buyer (Scruggs style) about 16 years ago.

@John Morgan Not to knock your style at all, but have you thought about having twice as many rentals instead of having rentals paid off?

But again, this is a business, so I need to keep my love of the stuff in check.Tile is great if you live in the south because it keeps the floor cool, but otherwise the damn grout lines are a nightmare, you had better keep replacements on hand, and finally selecting a style that is timeless is very hard to do, and usually expensive if you can find one.

I have to give them this shout out because they reached out to me as a user, and took my advice and created a killer schedule E style report. 1.

@Rich Hupper, I have seen a number of the types of building you are describing used for smaller subs in the Midwest. the type of construction they have utilized is a steel pole barn style of building, which have come a long way aesthetically and can look pretty contemporary if that's the desired appearance.

Be careful not to make your personal style, influence this decision.