Majority of my clientele are out of state investors.

I quickly learned that pools are expensive to maintain, but they’re also a major draw for guests.

C class in general is in for a major correction in my opinion (a lot of which has happened already but I think there is more to come) and this will be another nail in that coffin.But as with all chaos, opportunity breeds. 

Any major mistakes to avoid? 

Some of the family-business real estate companies are starting to move from the (typically) patriarch who started the company in the 90s into the kids who are in their early 40's +/-.  

See, the majority of profit in real estate is NOT made by below market purchases.  

Well, once the title company/closing attorney puts together the final numbers for closing, they are being told that anything older than 7 years is forgiven.

Yes, just like you claim depreciation on the use of your property, any company including an insurance company claim depreciation when they pay for your damage.

Keep in mind if you are renting a house to a company you can write whatever you want into the lease. 

you are going up against people and companies that spend thousands or even tens of thousands of dollars a month in marketing.