Self-storage — How to tell if a market is too saturdated?

[Steven Cowles]

I am from Central Illinois and have been reading a ton of blogs about self storage success. It’s something I would be interested in trying out, but my question is: how do you determine whether or not a market is too saturated? The city population is about 130,000 people and I’m guessing there are roughly 10-15 self storage complexes. On paper it sounds great but I’m a bit resentful knowing there are people who have beat me to it. Any advice?