They’re not stagnant, but after home prices rose quickly in 2013 and 2014 they did not sustain the pace."

 $1950 a month won't sustain a $225k condo.  

I only see clients putting in PV panels for electricity on projects because they want to send a message they are part of the "green sustainable" movement and have the money to spend.  

Make sure you focus on brand quality and sustainability over how cheap it is.For example 2 different brands dent and ding and one is 70 bucks cheaper initially but is very inefficient and breaks down quickly and is a no name brand.

I would eventually like to have the properties cash flow to sustain a passive income.  

As one BP member already said above, the FHA has a self-sustainability level they look for in smaller multifamily properties. 

But if you are doing it only to keep your units occupied, that doesn't sound sustainable.

Minneapolis does have some of the stricter laws, so take some time to find opportunities that make it quicker to abide by code and that can sustain you without bleeding too financially for things you need to fix.Leverage the people around you on the forums, the MNREIA, and also in your own industry.Best of luck mate, lets connect!

I want to learn to be the best owner/property manager I can be and able to sustain my living off of our investments!

We just had a talk about it last week as we are doubling our properties with him and it is just not sustainable.