I am on the Neighborhood Building Owner's Alliance weekly calls, and we had this ADU issue come up.

Since I am entering this field in the latter part of my life (63), I do not want 'long-term' investments as I am not interested in making millions, but having enough for the remainder of my life to 'Vive La Vida Loca'!

I manage almost 400 apartments in Cook County at this point.

Interested learning more about Boise Turnkey.  

The cost of labor , materials , property taxes , inflation , interest rates  etc .

The percentages are going to be up to you There are all kinds of High interest account that require all kinds of hoops to keep them.

@Sean OToole    this is an interesting post Sean.  

I believe United FCU is best. 20% down, usually a 10yr term (they offer a longer term though), and an interest rate that's pretty close to the current average for conventional loans. 

Wish they would build houses with this style of architecture still.

This is our boilerplate language:Insurance: Tenant should obtain a renters’ policy of insurance on their personal property.