Ambitious blueprints for America's most exclusive residential enclave are fracturing as elevated borrowing costs, municipal hurdles, and cooling luxury demand collide.

New York Knicks guard Josh Hart has returned his South Florida residence to the market at $5.699 million, reflecting broader price recalibration across prime luxury enclaves.

Markus Persson has placed his trophy Beverly Hills estate on the market for $70 million, matching his record-setting 2014 acquisition price.

Ultra-wealthy buyers are driving record valuations for historic coastal residences engineered around holistic health and biophilic design principles.