These tend to make your website rank higher since they are in the Self-Storage business and know the key search words, can keep changing them and they are built to keep the website visitor on your page longer.

I'm from Fort Myers, and looking to invest specifically in self storage or multifamily properties in Lee County/SWFL.

I have appraised multiple old homes that had no closets in their bedrooms, since it was common to have smaller bedrooms, no closets, and free standing dressers/bureaus for storage.

I include a list of rules and a list of charges that could affect the security deposit with $ amounts if they cause any.One rule I have is: the basement is not living space, it is for storage only.

Am I going to get a big fat tax bill for the $70k profit? 

Welcome @Robert Howard, I see you have some experience in storage facilities and that's something that interests many of us, I hope you can share your success stories and as @Michael Lee says, teach and learn from the wealth of knowledge that is BP. 

Small shed added in the back yard for extra storage. 

G-7482 § 77, 2007; prior code § 7105.02)19.48.030 - Uses permitted with a conditional use permit.The following uses are permitted in the DI district with a conditional use permit:A.Recreation, entertainment and tourist facilities:— Park or playground;B.Miscellaneous uses:— Auto parking lot— Recreational vehicle or boat storage, private, when contiguous to, and for the benefit of, a residential development— Solar energy electrical generators when not accessory to a permitted or conditionally permitted use— Subdivision drainage sump, provided that mineral rights owners have given written consent.Thanks ahead of time to anyone who might be able to help. 

Can you build multi family on it, storage, or commercial, or single family?

In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.