I don’t think the tiny house would get you there.

The biggest things for our energy bills are: how many ac units are on the house and do you have a hot tub.

@Jason Sinclair, having a designer for a wife, I would answer that it really depends heavily on each house, the flow and usability of the spaces as they are, and the overall use of space in the house as a whole.That being said, while there may be a small shift towards more separated spaces, "open concept" is by no means dead, and in many markets, most people seem to still want to have connectivity between their communal spaces.In fact, my wife's current flip is a split level (although technically it is a split-foyer), and she is taking out a structural wall to connect the kitchen, dining and living areas.  

It is a mobile home and I was able to get seller financing for half of the purchase price. 

You can quickly see why looking at this graph - https://www.visualcapitalist.com/buying-vs-renting-house-in-...You can see how in 2015 the average mortgage was cheaper than the average rent, so it was easier to make the math work with light value add and just buying single family homes.

As for valuation, I see no reasons why a Junior ADU would negatively impact additional housing unit.

Usually in the year following your purchase, the property appraiser will reevaluate the house based on the new sales price.  

Dont mean to change topics, but I have been considering investing in east stroudsburg in student housing.

I don't think the future will be kind to the investors who bought cheap houses in a big community of other investors. 

Was there really deals to do seller financing and that were already in good conditions?