Some other states allow them many do not.. so again you would be wise to seek council first.. 

To keep up with updates, I follow different Twitter and Facebook posts such as local news reporters and the news channels themselves that update on council meetings and voting.

Plus the economic council of the Greater Phoenix Area has a great resource to determine the makeup of each city.

This will vary property by property and area by area, but in area not only do you have all the city/county level planning: access, traffic counts, density requirements, unit counts for school districts, sewer capacity, etc, but you also have neighborhood councils which will have additional level of say in final design, scale, unit counts, uses, etc.  

Have you reached out to any city or county council people to see where thing stand?

It's free to talk to zoning and planning, it's free to talk to city council, it's free to talk to code enforcement.

The city council has chased many landlords out.I'd like to share with you a SeattleTimes article that just appeared today.

Dan, you might want to check out the Short Term Rental forum here on Bigger Pockets too.Also, in the past week, there is some disturbing news from the city council in OC. 

There are some great properties on the market plus Tempe's city council is looking at expanding the rules for ADUs.

The bill proposal is in its early stages so I won't pretend to have all the answers, and I agree that subsidized housing initiatives need some work. ya good point on infrastructure.. they could raise the funds using double tax free Muni's it was common back in the day when we were developing in CA.. to use bond issues for public improvements that had federal tax bene' they are expensive though to put together usually 200 to 250k and that was in the 80s.. by the time you get apprasials and Bond Council etc etc..