There have been so many studies on rent control it's ridiculous.

If purchasing new real estate as part of your reinvestment, a cost segregation study can maximize depreciation deductions, offsetting future taxable income.For effective planning, assess how the sale price is allocated between real estate, tangible assets, and goodwill, as this determines the tax treatment.

This would make a good case study. 

Nope......i heard of it on a podcast though.i actually have studied banking and economics for the last year and a half.

Study the market.

If a cost segregation study was performed, the accelerated depreciation may further reduce the property’s basis, potentially increasing taxable capital gains when sold.Depreciation recapture will occur when you sell the personal residence, so it’s essential to keep detailed records of all depreciation claimed while the property was used as a rental to ensure accurate tax reporting at that time.This post does not create a CPA-Client relationship.

I'm a 2x house hacker in LA and a case study in the Bigger Pockets Book, "The House Hacking Strategy."

I was studying the market and my rent will be just enough to cover the mortgage and HOA fee now I might to pay out of pocket for insurance but don't want to sell it yet because the area is growing and might have good appreciation in the years that follow.

Without a closet is would be referred to as a office or study.

To answer your question: yes, large studies released by the bigger brokerages have shown Phoenix and other sunbelt markets showing overall rent declines.