Choosing areas with good infrastructure to significantly increase housing via zoning changes can make a much bigger impact on the housing shortage.  2 units per 1000’ foot of lot size allows larger unit counts that can be built much cheaper than building one small unit at a time.

This tells me that there's a critical supply shortage in these "certain places" and the fix is going to have to be more permanent and not just superficial.apparehently, they are seeing rents go up in "certain places 20, 30, 40, 50% and even higher in some places"

The labor and materials shortage has also made the process much harder and profit margins are very slim.

If you do a search for cheap Class C properties (for example $50,000 to $150,000/$200,000) in the Midwest (pick a random city), ask yourself why there are so many of them with a housing shortage?

3) There's a significant shortage of housing in the USA currently.

This area has a pretty significant housing shortage, so I bet an approach like that would be well received. 

I have a 15k sf warehouse new build that just got finished. I have it 75% leased. I am missing out on 18k NOI per month because I cant get U&O’s. There is a major backorder of meter stacks going on Nationwide. My ...

It is more volatile, but it has higher appreciation rates because property prices are so much lower compared to the surrounding cities.Did you hear of the water shortage/water rights issue in EPA? 

My understanding is the the cities are allowing ADU to specifically address housing shortages and homelessness. 

Usually at my local RE meetups there are no shortage of mortgage brokers, hard money lenders and private money lenders there.Before you go out and look for deals, schedule meetings with these people and talk to them.