If you are close to a hospital, Oil / Chemical Refinery, Armed Forces base, etc....then you can cater to those people (i.e. nurses, refinery workers, military, etc.). 

I am flirting with the idea of installing a whole-house water filter to reduce chlorine and other chemicals. 

I am flirting with the idea of buying a whole-house water filter to reduce chlorine and other chemicals. 

We tore out the old kitchen, installed Lifeproof LVP throughout, replaced all the cabinets with Choice Cabinets (which we are distributors for so we get good prices), added an island, Calacatta Glacier Quartz countertops, new vanities, new fixtures, reframed a wall for the storage shed which had termite damage, chemically treated the house for termites, painted, and replaced all interior doors.

It's not that San Diego properties can't have these issues but the harsher weather conditions in some of the cheaper markets can have a toll on your investments.   

In addition, car washes don't hold their land value that well because of the long term environmental impacts of the chemicals used on site.

Refinery, Chemical plant, Tank Plant, Ford engine plant and 2 hospitals make up work force.

I cannot comment on the off the shelf stuff at Home Depot, but some of the chemicals used for stripping the tub is extremely hazardous.

If it pressure treated pine than I would wait one year before you stain so some of the chemicals they use to pressure treat can wear off.

Columbus has a lower crime rate, population growth, almost 2x the job growth of Memphis, but the homes are more expensive and the weather is harsher.