However, new construction starts have plummeted since 2022/2023, so within the next 1-3 years current projects that were started in 2022 will finish up, but the pipeline of projects that started in 22/23 is way smaller so projects being completed in 2025-2028 will be significantly less so supply and demand should tip back (all else being equal).

When we were done at the notary and finished the purchase, we were able to obtain the license and start the works (it was a big commercial old furniture shop where we created 14 tourist apartments). 

Before you consider building ADUs you will need to have a better understanding of the costs and scope of work associated with construction vs. the rent that you will be able to attain monthly once it is completed.

I currently own two properties in Utah but just finished getting divorced.

In the Midwest, finishing basements or adding outdoor living spaces can be particularly valuable.

What I see is that they in single family zoned areas they often will convert other living space (craft rooms, offices, finished wood shops, etc) to ADUs but do not convert garages.  

I have a flip I just finished together with partners.

Part of the BRRRR tactic does invlove "refinance" so keep that in mind as you finish up the renovations and rates continue to drop.  

Project still not finished as I ran out of money to put into it and it's kind of a messed up deal as I've got a friend of mine well current business partner living in there as he's supposed to be fixing it up but this relationship is coming to an end just because of other personal issuesLessons learned?

Maybe you could have a walk out finished basement?