Tons of places (including my area) have a shortage of affordable housing - so start there and then, if I were in your situation, I would look at places where the cost to acquire is relatively low.

I imagine that there will be no shortage of tenants in lower income working class neighborhoods that are close to jobs and schools.

@James SwiftInteresting, I didn't realize there was much of a housing shortage in Salem.

However, there may be some good opportunities in spec builds (especially under $300K) given the extreme inventory shortage of SFRs we currently have along with a good supply of vacant land/undeveloped lots in the surrounding areas.Also, check out the CRIEA club if you haven't already.  

I have a lot of other older friends who see real estate as the means to fill in the gaps/shortages as the plan or live their retirement years out.  

Rochester right now is experiencing a shortage in supply because less people want to sell their rentals since they are increasing in value.

Like many small-medium sized towns in Nebraska, there's a housing shortage and properties priced right move quickly.  

Tons of members from San Diego on here, so there should be no shortage of resources for your to tap into.

There sure is a shortage of single family homes in the area.

Good schools, great houses, tons of new jobs and a shortage of houses.