Will be doing the same thing myself with land on the team I joined at Keller Williams. 

Rentals was not a thought to me in those days I was a land flipper.. had absolutely no interest in being a landlord.. and basically still dont to this day :) yes I have some rentals for tax purposes but not really for wealth building purposes.

Make sure you know the impact that adding an ADU will have on any rent control. 12) investors seldom include the land value in the overall ADU costs.

Start meeting with sellers in the areas you are wanting to work in whether they be mobile homes in parks, lots and/or out on land.

Our huge brick church was sold for about land value.).

Bonus if you land a corner lot.- multiple indoor common areas (think 2 separate tv setups). - exterior "usable square footage" (think covered patio, pergolas).- extra storage space so tenants don't feel the need to squeeze their entire lives into one room (extra garage space, attic, detached shed)- room for 2 full refrigerators!

Quote from @Bear Geiger: At Little Bear CreekProperties, we specialize in developing large tracts of land into individuallots for home builders in the Raleigh, NC area.

Should I have my local friends stay in the Airbnb and give me reviews so that I can get the ball rolling? 

It's called land of 10,000 lakes but MN has closer to 11,500 and that just lakes of 10acres+.

Mostly a single ADU added in a single family zone area will add less value than the cost of the hands on addition.Depending on the financing my underwriting with a high LTV (80% LTV) for $200k would be cash neutral at a rent point at about $2200 when allocating for all expenses without including any land value.