where he spearheaded efforts to protect the Lake Worth Lagoon. The son of immigrants, Diaz is a rare minority voice at City Hall who understands the nuances of a majority-minority city.

The $1.3 million deal, which was finalized in November, adds nearly 4 acres of greenery and submerged land to Peterffy’s sprawling 6-acre estate on the Lake Worth Lagoon south of President ...