The population of New Orleans fell from 484,674 before Katrina (April 2000) to an estimated 230,172 after Katrina (July 2006) — a decrease of 254,502 people and a loss of over half of the city’s population.(1) By July of 2015, the population was back up to 386,617 — 80% of what it was in 2000.So apparently once a large disaster hits an area, its safe to assume 2 things: 1, people leave en mass. 2, it takes them a long time to come back.I'm not sure the Houston area will ever be what it once was.

I'll keep a closer eye and perhaps offer them a small decrease to incentivize them to stay if the price is out of line next spring.

Demand from buyers seems to be decreasing even though inventory remains relatively low.  

https://research.realtor.com/housing-shortage-boomers/

So for example if you decided to convert the car wash site to McDonalds would you get a water credit since the water use would decrease significantly?

Locally we just had a large manufacturing employer have their value decreased  by 10mil.

If you are underwriting a property do you consider that the income may actually decrease (if so by how much) or do you think worst case scenario rents are stagnate?

I am laser focused on  educating myself about analyzing opportunities to increase knowledge and decrease hesitation that results in missed opportunities. 

For all that, I will NOT get compensated other than hopefully with a happier tenant whose utility bill will probably decrease a good bit.  

It's never a guarantee with higher-end or lower-end tenants, but your risk of a bad tenant increasing as the quality of property decreases.