Buy further inland.

Pretty soon, you will have a mini-empire and you can continue leveraging. 

After selling RE for 10 years or so ( specializing in land and land development) I mentored with a HML in Oakland and ended up Running the company and an equity stake.. 89 hit ( earth quake War ) and Norther Ca RE went into the toilet.. had to pivot.. got into Timber and land in Oregon and did that through the 90s Loved that bizz until log market soften a bunch and a lot of consolidated mills etc and the business for us kind of died down..

Theoretically this will be matched by a decrease in land prices.

Water access to the inland bays (boat ramp, kayak launch, boat docks, fishing/crabbing docks), community pool, clubhouse, playground etc.

I'm sure some people built an RE empire with only 30K seed money.

How it works : for club members, buy property at tax sale, file in Land Court, foreclose redemption, share money with club members.  

Right on the water in South Tampa could be prone to hurricane damage but if you go a little inland, say near USF you could be much better off.

I own one property, but I would like to know how do I build a real estate empire like Trump?

I did this when I was looking at buying in Hemet, Temecula, and some inland empire cities.5) Listen to the bigger pocket podcasts and get books by BP Podcast host David Greene.Hope this helps!