3 separate recent studies show it is currently cheaper to rent than own in virtually every large market and that it has never been more so than currently.  

I say Keller Williams because I used to be an agent there and I know they are a large brokerage world wide. 100% of $1,000 commission is still better than 100% of $0 commission. 

They already cancelled many large complex deals or doubled their price for the past few years.

Thus, I'd expect something like the following for the next three years for US rents: 1) 2025 will not see much national rent growth as we continue to deliver so much supply that prices remain largely flat.

A friend of mine picked up a duplex there last year for under $150K, added some sweat equity, and turned it into a cash cow.Chattanooga, TN: This market has been quietly making waves.

@Jimmy Lieu makes a good point to invest where large companies are investing. 

No one is going to allow that and construction-wise, it is usually not cost-feasible for the output rent on such a large property.

Although the percentage of the increase is large, the determinative factors are whether the resulting rent is so great as to shock the conscience of a reasonable person and was effected for the purpose of compelling the tenant to vacate."

I realize I added no context.

For property selection, choosing a duplex or triplex in a good neighborhood can provide steady cash flow, while adding an ADU to a single-family home works well in areas with high rental demand like Portland.