Opportunity to build your dream home on near 50,000 sq foot lot. Conceptual design by Thirlwall Architecture inspire your new luxury waterfront estate with direct Biscayne bay views. Building code allows new build size up to 39,200 sq foot home, with concept design showing extraordinary 21,000 sq foot residence with 10 beds + 12 bath, 2,000 sq ft gym/spa sanctuary with sauna, steam, cold plunge, treatment rooms. Suspended staircases, office suite, theatre, hair salon, games room. Detached guest suite, padel tennis court, glass-enclosed climate-controlled car gallery for 14+ cars. Sale includes 22,000 sq ft.² strip of mangrove forest. Conceptual design only not yet approved and buyer must complete plans, permits, and construction. $21 million for land only.