Our rentals are in a similarly cold climate in Maine, and our residents don't mind that bedrooms are not carpeted. 

Makes so much sense in today's technical climate.

It could be because there was a lot of opportunity working with distressed owners in that timeframe.It could also be that Phoenix is a large metro with a big population and generally business friendly climate.

After that, it's a guess, but I think things will swing back around to this part of the country at some point.This part of the country suffers from high taxes and over-regulation, and demographically people (especially older people) and companies have been moving to other parts of the country, as you noted.I think it will take a lot of time, and a change in political leadership (probably several changes) for there to be a will to make our part of the country competitive again, for the tax burden to businesses and individuals, but I think it will eventually happen.There could also be some change that we can't even foresee yet, for example maybe in 15-20 years climate change makes the southern part of the U.S. a lot less desirable than it is currently, making the Northeast look better in relative terms, right around the same time (hopefully) we get new political leadership which tries to lure individuals and businesses back from other parts of the country.It's hard to predict that far out into the future, but again, things tend to happen in cycles, so while I would never recommend anyone move to the Northeast right now, if you have to be here for some other reason (e.g., family), I think the trend will eventually swing back in the Northeast's favor.

The amount you need to wash off the panels depends a lot on the location, if you live somewhere dry and dusty, they'll need to be washed off pretty regularly, but if it rains and snows where you are that will get off the dirt, except in those really dry and dusty climates, it's not generally that big of an issue.

Stay tuned as we dive deeper into how landscaping can transform your property.Florida's unique climate offers property owners a great advantage when it comes to landscaping projects.

True that this is can be a no-no especially in cold weather climates. 

Generally true, weather and climate impact your investing.

Each area of Texas is vastly different in what varieties are grown and rootstock they grow on though, like comparing Fresno with Lake Tahoe, climate differences-wise.

That can get pretty expensive and you would need to have a lease clause that the pool is professionally maintained throughout the lease period and shut down for winter months if your climate requires that.